19,409 results match your criteria Bioresource technology[Journal]


Carbon dioxide sequestration accompanied by bioenergy generation using a bubbling-type photosynthetic algae microbial fuel cell.

Bioresour Technol 2019 Feb 7;280:95-103. Epub 2019 Feb 7.

Department of Chemical and Biomolecular Engineering, Ohio University, Athens, OH 45701, USA.

This study developed a bubbling-type photosynthetic algae microbial fuel cell (B-PAMFC) to treat synthetic wastewater and capture CO using Chlorella vulgaris with simultaneous power production. The performance of B-PAMFC in CO fixation and bioenergy production was compared with the photosynthetic algae microbial fuel cell (PAMFC) and bubbling photobioreactor. Different nitrogen sources for C. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.038DOI Listing
February 2019

Study on the degradation performance and kinetics of immobilized cells in straw-alginate beads in marine environment.

Bioresour Technol 2019 Feb 4;280:88-94. Epub 2019 Feb 4.

College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.

In this study, two strains Halomonas and Aneurinibacillus were mixed in equal proportions as free cells that could degrade diesel and produce biosurfactant. A new type of immobilized cells, free cells immobilized in beads combined with sodium alginate and straw, was studied. The components of straw-alginate beads were optimized by Response Surface Method, and the degradation performance of immobilized cells was determined. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.019DOI Listing
February 2019

Biochemical response of indigenous microalgal consortia to variations in nitrogen concentration of treated effluent.

Bioresour Technol 2019 Feb 4;280:118-126. Epub 2019 Feb 4.

Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori 6808552, Japan.

Cultivation conditions influence microalgal cellular components, such as lipid accumulation under nutrient depletion, high light irradiation and salinity stress. In this study, indigenous microalgal consortia were cultivated in batch mode using an actual treated effluent. The temporal response of cellular components to the variations in nitrogen concentration and influence of light irradiation on the response were investigated. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.014DOI Listing
February 2019

Influence of liquid-to-biogas ratio and alkalinity on the biogas upgrading performance in a demo scale algal-bacterial photobioreactor.

Bioresour Technol 2019 Feb 6;280:112-117. Epub 2019 Feb 6.

Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain; Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain. Electronic address:

The influence of the liquid-to-biogas ratio (L/G) and alkalinity on methane quality was evaluated in a 11.7 m outdoors horizontal semi-closed tubular photobioreactor interconnected to a 45-L absorption column (AC). CO concentrations in the upgraded methane ranged from <0. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.029DOI Listing
February 2019

Effect of torrefaction on pinewood pyrolysis kinetics and thermal behavior using thermogravimetric analysis.

Bioresour Technol 2019 Jan 30;280:104-111. Epub 2019 Jan 30.

Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, PR China; State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, PR China. Electronic address:

Torrefaction is a promising pretreatment technology for biomass thermochemical conversion. In this study, pinewood (PW) and PW250 (torrefied at 250 °C) were prepared for pyrolysis. Torrefaction was carried out in a fixed bed reactor and the pyrolysis was studied by thermogravimetric analyzer using six different heating rates. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.138DOI Listing
January 2019

Positive impact of biochar alone and combined with bacterial consortium amendment on improvement of bacterial community during cow manure composting.

Bioresour Technol 2019 Feb 5;280:79-87. Epub 2019 Feb 5.

College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China. Electronic address:

The present work studied to evaluate the effectiveness under the interaction of bacterial consortium and biochar applied to give impetus to bacterial community activities among cow manure composting. High-throughput sequencing technique and six treatments were carried out: T2, T3 and T6 were single apply of bacteria culture (C), 12%wood biochar (12%WB) and 12%wheat straw biochar (12%WSB), respectively, while T4 and T5 were bacterial consortium combined with 12%WB and 12%WSB respectively, and T1 was used as control. The conclusion shows that the richness of bacterial community were most prosperity in T5 and T4 that in line with the statistical analysis angle of curves and cluster. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.026DOI Listing
February 2019

Improvements of thermophilic enzymes: From genetic modifications to applications.

Bioresour Technol 2019 Jan 22. Epub 2019 Jan 22.

Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Science, Lanzhou University, Tianshui South Road #222, Lanzhou, Gansu 730000, People's Republic of China. Electronic address:

Thermozymes (from thermophiles or hyperthermophiles) offer obvious advantages due to their excellent thermostability, broad pH adaptation, and hydrolysis ability, resulting in diverse industrial applications including food, paper, and textile processing, biofuel production. However, natural thermozymes with low yield and poor adaptability severely hinder their large-scale applications. Extensive studies demonstrated that using genetic modifications such as directed evolution, semi-rational design, and rational design, expression regulations and chemical modifications effectively improved enzyme's yield, thermostability and catalytic efficiency. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.087DOI Listing
January 2019

Metal biorecovery and bioremediation: Whether or not thermophilic are better than mesophilic microorganisms.

Bioresour Technol 2019 Feb 6. Epub 2019 Feb 6.

CINDEFI (CONICET-CCT LA PLATA UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calles 47 y 115, (1900), La Plata, Argentina.

Metal mobilization and immobilization catalyzed by microbial action are key processes in environmental biotechnology. Metal mobilization from ores, mining wastes, or solid residues can be used for recovering metals and/or remediating polluted environments; furthermore, immobilization reduces the migration of metals; cleans up effluents plus ground- and surface water; and, moreover, can help to concentrate and recover metals. Usually these processes provide certain advantages over traditional technologies such as more efficient economical and environmentally sustainable results. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.028DOI Listing
February 2019

The behavior of antibiotic resistance genes and their associations with bacterial community during poultry manure composting.

Bioresour Technol 2019 Feb 6;280:70-78. Epub 2019 Feb 6.

College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China. Electronic address:

In this paper, the influence of clay amendment on antibiotic resistance genes (ARGs) fate and their relation with bacterial diversity in poultry manure (PM) composting was evaluated. The results confirmed that 4% clay amendment was significantly reduce the relative abundances (RAs) 94% of ARGs, while higher dosage of clay blended treatments (T5 and T6) composts were observed relatively very high percentage of ARGs as compared to other clay blended treatments. Clay addition play potential role on the occurrence and distribution of ARGs during the composting by altering the overall RAs of Firmicutes and Proteobacteria, and there host bacterial species. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.030DOI Listing
February 2019

Citric acid production from the integration of Spanish-style green olive processing wastewaters with white grape pomace by Aspergillus niger.

Bioresour Technol 2019 Jan 30;280:59-69. Epub 2019 Jan 30.

Laboratory of Food Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece. Electronic address:

This study aimed to optimize an integrated simple process for citric acid production using Spanish-style green olive processing wastewaters enriched with sugars from white grape pomace and the robust Aspergillus niger B60. Mild mixing of equal quantities of the above streams governed satisfactory amount of appropriate carbon sources (equimolar mixture of glucose and fructose, 111.5 g/L) in the sugar-enriched wastewater and its neutralization. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.139DOI Listing
January 2019

Enhanced simultaneous nitrification and denitrification in treating low carbon-to-nitrogen ratio wastewater: Treatment performance and nitrogen removal pathway.

Bioresour Technol 2019 Feb 4;280:51-58. Epub 2019 Feb 4.

Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, PR China; National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing, PR China.

Simultaneous nitrification and denitrification (SND) is an energy-saving wastewater treatment process, however, the nitrogen removal pathways are not clear. An enhanced SND sequencing batch biofilm reactor with a SND ratio above 97.3% was built to treat low carbon to nitrogen ratio wastewater. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.022DOI Listing
February 2019

A robotic platform to screen aqueous two-phase systems for overcoming inhibition in enzymatic reactions.

Bioresour Technol 2019 Jan 30;280:37-50. Epub 2019 Jan 30.

Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands. Electronic address:

Aqueous two-phase systems (ATPS) can be applied to enzymatic reactions that are affected by product inhibition. In the biorefinery context, sugars inhibit the cellulolytic enzymes in charge of converting the biomass. Here, we present a strategy to select an ATPS (formed by polymer and salt) that can separate sugar and enzymes. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.136DOI Listing
January 2019

The effect of primary treatment of wastewater in high rate algal pond systems: Biomass and bioenergy recovery.

Bioresour Technol 2019 Jan 23;280:27-36. Epub 2019 Jan 23.

GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya · BarcelonaTech, c/ Jordi Girona 1-3, Building D1, 08034 Barcelona, Spain.

The aim of this study was to assess the effect of primary treatment on the performance of two pilot-scale high rate algal ponds (HRAPs) treating urban wastewater, considering their treatment efficiency, biomass productivity, characteristics and biogas production potential. Results indicated that the primary treatment did not significantly affect the wastewater treatment efficiency (NH-N removal of 93 and 91% and COD removal of 62 and 65% in HRAP with and without primary treatment, respectively). The HRAP without primary treatment had higher biodiversity and productivity (20 vs. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.096DOI Listing
January 2019

Mechanical pretreatment of lignocelluloses for enhanced biogas production: Methane yield prediction from biomass structural components.

Authors:
S O Dahunsi

Bioresour Technol 2019 Feb 4;280:18-26. Epub 2019 Feb 4.

Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Biomass and Bioenergy Group, Environment and Technology Research Cluster, Landmark University, Nigeria. Electronic address:

In this study, mechanical pretreatment was applied to six different lignocelluloses in two different treatment phases and the prediction of their methane yield was done from biomass chemical composition. Physicochemical, proximate and microbial analyses were carried out on both pretreated and untreated biomass using standard methods. Mechanical pretreatments caused the breakdown of structural materials in all the used biomass which was characterized by reduction of the lagging time during anaerobic digestion and the subsequent increase in methane yield up to 22%. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.006DOI Listing
February 2019

Evaluating the effects of Zn(II) on high-rate biogranule-based denitrification: Performance, microbial community and sludge characteristics.

Bioresour Technol 2019 Feb 2. Epub 2019 Feb 2.

College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China. Electronic address:

High-rate denitrification is a popular and efficient process for treatment of nitrate-rich wastewater. Knowing the effect of heavy metals on denitrification is essential for industrial development. In the present study, the long-term impacts of Zn(II) on denitrifying granular sludge were investigated. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.005DOI Listing
February 2019

Ensiling fermentation reveals pre-treatment effects for anaerobic digestion of sugarcane biomass: An assessment of ensiling additives on methane potential.

Bioresour Technol 2019 Jan 31. Epub 2019 Jan 31.

Centre for Agricultural Engineering, University of Southern Queensland, Toowoomba, Australia.

Ensiling of sugarcane trash (SCT) and sugarcane stalks (SCS) was studied to assess the effects of molasses (MOL) and lactic acid bacteria (LAB) inoculant on methane potential. The experiment was run for 70 days and monitoring parameters were analyzed at days 0, 5, 15 and 70. Biochemical methane potential (BMP) tests performed with fresh and ensiled material at day 70 showed an increase in methane potential by 24. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.143DOI Listing
January 2019

Metatranscriptomics reveals microbial adaptation and resistance to extreme environment coupling with bioleaching performance.

Bioresour Technol 2019 Jan 24;280:9-17. Epub 2019 Jan 24.

Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China.

Chalcopyrite bioleaching by 2, 4 and 6 acidophilic strains with the same inoculation density were studied, respectively. The results indicated that the 6-strain community firstly adapted to bioleaching environment, dissolved the chalcopyrite rapidly and maintained an efficient work until late stage. Transcriptome profiles of the 6-strain community at 6th and 30th day during bioleaching process were investigated by RNA-seq. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.117DOI Listing
January 2019

H addition through a submerged membrane for in-situ biogas upgrading in the anaerobic digestion of sewage sludge.

Bioresour Technol 2019 Jan 30;280:1-8. Epub 2019 Jan 30.

Department of Chemical Engineering and Environmental Technology, Escuela de Ingenierías Industriales, Sede Dr. Mergelina, University of Valladolid, Dr. Mergelina s/n, 47011 Valladolid, Spain; Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina s/n, 47011 Valladolid, Spain. Electronic address:

In-situ upgrading of biogas in a mesophilic anaerobic digester of sewage sludge by sparging H through a membrane was studied. Large gas recirculation rates were required to facilitate H transfer to the bulk liquid phase; at  ∼200 L L d, H utilization efficiency averaged 94% and the specific CH production increased from 0.38 L L d, during conventional digestion, to 0. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.135DOI Listing
January 2019

Effect of triclocarban on hydrogen production from dark fermentation of waste activated sludge.

Bioresour Technol 2019 Feb 4;279:307-316. Epub 2019 Feb 4.

College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.

This work aims to investigate whether and how TCC affects hydrogen production using both experimental and model approaches. Experimental results showed that the exposure of TCC not only enhanced the hydrogen production yield but also promoted the hydrogen yield potential and hydrogen production rate. The maximum hydrogen production yield and hydrogen production rate increased from 10. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.016DOI Listing
February 2019

A combined heterotrophic and sulfur-based autotrophic process to reduce high concentration perchlorate via anaerobic baffled reactors: Performance advantages of a step-feeding strategy.

Bioresour Technol 2019 Jan 24;279:297-306. Epub 2019 Jan 24.

Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China.

The combined anaerobic baffled reactors (ABRs) of heterotrophic and sulfur-based autotrophic processes were first investigated for the removal of high perchlorate concentration under different feeding strategies. The removal efficiency of the step-feeding ABR (SF-ABR) reached 97.56% at 800 mg/L perchlorate, which was significantly superior to the normal-feeding ABR (NF-ABR). Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.111DOI Listing
January 2019

First demonstration that ascomycetous halophilic fungi (Aspergillus sydowii and Aspergillus destruens) are useful in xenobiotic mycoremediation under high salinity conditions.

Bioresour Technol 2019 Feb 2;279:287-296. Epub 2019 Feb 2.

Centro de Investigación en Dinámica Celular, Instituto de Investigaciones en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos (UAEM), Ave. Universidad 1001, Col. Chamilpa, CP. 62209 Cuernavaca, Morelos, Mexico; Faculty of Biology, University of Ljubljana, Kongresni trg 12, 1000 Ljubljana, Slovenia. Electronic address:

Polycyclic aromatic hydrocarbons (PAH) and pharmaceutical compounds (PhC) are xenobiotics present in many saline wastewaters. Although fungi are known for their ability to remove xenobiotics, the potential of halophilic fungi to degrade highly persistent pollutants was not yet investigated. The use of two halophilic fungi, Aspergillus sydowii and Aspergillus destruens, for the elimination of PAH and PhC at saline conditions was studied. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.002DOI Listing
February 2019

Ternary deep eutectic solvents for effective biomass deconstruction at high solids and low enzyme loadings.

Bioresour Technol 2019 Jan 26;279:281-286. Epub 2019 Jan 26.

Department of Biomedical, Bioengineering, and Chemical Engineering, University of Missouri, Columbia, MO 65203, USA. Electronic address:

Ternary deep eutectic solvents (DESs) were developed to enable rapid and high-solid biomass pretreatment as well as concentrated sugar hydrolysate production. Six ternary DESs constituted choline chloride (ChCl) or guanidine hydrochloride (GH) as a hydrogen bond acceptor (HBA), ethylene glycol (EG) or propylene glycol (PG) or glycerin (GLY) as a polyol-based hydrogen bond donor (HBD), and p-toluenesulfonic acid (PTSA) as an acidic HBD. GH-EG-PTSA was the most effective, evidenced by 79% xylan and 82% lignin removal in only 6 min at 120 °C and 10 wt% solid loading. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.126DOI Listing
January 2019
1 Read

Effect of crystallinity on pretreatment and enzymatic hydrolysis of lignocellulosic biomass based on multivariate analysis.

Bioresour Technol 2019 Jan 9;279:271-280. Epub 2019 Jan 9.

College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China; state Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China.

In this work, multivariate data analysis was employed to correlate variables of pretreatment process of lignocellulosic biomass. Principal component analysis and partial least square methods were performed to get the inner-relationship and data interpretation between the crystallinity and other parameters of mechanical refining-assisted sodium hydroxide pretreatment followed by enzymatic saccharification of corn stover. The PCA and PLS models showed that Sodium hydroxide dosage, mechanical refining treatment, lignin removal rate and crystallinity had close inner-related relationship with the efficiency of pretreatment and enzymolysis. Read More

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http://dx.doi.org/10.1016/j.biortech.2018.12.096DOI Listing
January 2019

Electro-conversion of carbon dioxide (CO) to low-carbon methane by bioelectromethanogenesis process in microbial electrolysis cells: The current status and future perspective.

Bioresour Technol 2019 Jan 31. Epub 2019 Jan 31.

Research Institute on Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem ut 10, 8200 Veszprém, Hungary.

Given the aggravated greenhouse effect caused by CO and the current energy shortage, CO capture and reuse has been gaining ever-increasing concerns. Microbial Electrolysis Cells (MECs) has been considered to be a promising alternative to recycle CO bioelectrochemically to low-carbon electrofuels such as CH by combining electroactive microorganisms with electrochemical stimulation, enabling both CO fixation and energy recovery. In spite of the numerous efforts dedicated in this field in recent years, there are still many problems that hinder CO bioelectroconversion technique from the scaling-up and potential industrialization. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.145DOI Listing
January 2019

Alkaline post-incubation improves cellulose hydrolysis after γ-valerolactone/water pretreatment.

Bioresour Technol 2019 Apr 30;278:440-443. Epub 2019 Jan 30.

College of Forestry, Northwest A&F University, No. 3 Taicheng Road, Yangling 712100, Shaanxi, China; Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China. Electronic address:

The impact of γ-valerolactone/water (GVL/HO) pretreatment coupled with alkaline post-incubation on the digestibility of cellulose substrates was investigated. When Avicel was pretreated by GVL/HO with HSO as catalyst, the glucan conversion decreased from 27% (untreated Avicel) to 16% due to the esterification of cellulose after pretreatment. After incubation of GVL/HO pretreated Avicel with 1% NaOH at 50 °C for 1 h, the glucan conversion enhanced to 20%. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09608524193017
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http://dx.doi.org/10.1016/j.biortech.2019.01.141DOI Listing
April 2019
2 Reads

Stable partial nitrification of domestic sewage achieved through activated sludge on exposure to nitrite.

Bioresour Technol 2019 Apr 2;278:435-439. Epub 2019 Feb 2.

National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China. Electronic address:

Partial nitrification is crucial for application of autotrophic nitrogen removal which is beneficial for treating carbon-limited wastewater. This study presents an alternative strategy for achieving partial nitrification of domestic wastewater treatment, by treating activated sludge of a nitrifying reactor on long-term nitrite exposure. Initially, the nitrifying reactor obtained complete nitrification. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.02.004DOI Listing

Thermal degradation kinetics of sugarcane leaves (Saccharum officinarum L) using thermo-gravimetric and differential scanning calorimetric studies.

Bioresour Technol 2019 Jan 31;279:262-270. Epub 2019 Jan 31.

Department of Chemical Engineering &Technology, IIT (BHU) Varanasi, Varanasi 221005, India. Electronic address:

Pyrolysis of sugarcane (Saccharum officinarum L) leaves (SCL) has been investigated using DTA/TGA and DSC techniques. Proximate and ultimate analyses and calorific value measurement have been carried out using standard protocols. The sugar cane leaves contain 44% cellulose, 22% hemicellulose and 17% lignin. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.137DOI Listing
January 2019

Effects of biomass pyrolysis derived wood vinegar on microbial activity and communities of activated sludge.

Bioresour Technol 2019 Jan 29;279:252-261. Epub 2019 Jan 29.

State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Department of New Energy Science and Technology, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

The effects of wood vinegar (WVG) on microbial activity and communities of activated sludge were investigated in a sequencing batch reactor (SBR) process. Results showed that the optimal WVG concentration was 4 μL/L when the pollutants removal efficiency and microbial activity were promoted by a WVG dilution factor of 1000. WVG could reduce the increase in microbial species richness, which led to a more notable variety of microbial species diversity. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09608524193016
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http://dx.doi.org/10.1016/j.biortech.2019.01.133DOI Listing
January 2019

Gasification reactivity of co-pyrolysis char from coal blended with corn stalks.

Bioresour Technol 2019 Jan 24;279:243-251. Epub 2019 Jan 24.

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, China. Electronic address:

The gasification reactivity of coal and corn stalks co-pyrolyzed char is studied using thermogravimetric analysis, and the influence of co-pyrolysis on co-gasification reactivity is quantitatively characterized by synergy index. The results demonstrate that with increasing the pyrolysis temperature, the gasification reactivity of coal char gradually decreases, however, the gasification reactivity of CS char does not change monotonically. Furthermore, inhibition effect on co-gasification reactivity of 75% CS co-pyrolyzed char and se-pyrolyzed mixed char is shown at early stage of co-gasification and it gradually becomes synergistic effect as the co-gasification process progresses. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.108DOI Listing
January 2019

Electric field induces electron flow to simultaneously enhance the maturity of aerobic composting and mitigate greenhouse gas emissions.

Bioresour Technol 2019 Jan 30;279:234-242. Epub 2019 Jan 30.

Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China. Electronic address:

The long maturation period and greenhouse gas (GHG) emission are two major problems that arise during aerobic composting, mainly due to the low efficiency of O transmission and utilization. In this study, a novel electric-field-assisted aerobic composting (EAC) process was tested by simply applying a direct-current voltage of 2 V to a conventional aerobic composting (CAC) process. Compared with the CAC process, the maturation time and the total GHG for the EAC process were reduced by 33% and 70%, respectively. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.140DOI Listing
January 2019

Catalytic transfer hydrogenolysis of lignin into monophenols over platinum-rhenium supported on titanium dioxide using isopropanol as in situ hydrogen source.

Bioresour Technol 2019 Jan 29;279:228-233. Epub 2019 Jan 29.

Engineering Laboratory for Energy System Process Conversion & Emission Control Technology of Jiangsu Province, School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing 210042, China.

Using isopropanol as an in situ hydrogen donor, catalytic transfer hydrogenolysis of lignin into monomeric phenols was studied at mild conditions. The performance of catalysts and the effects of H, temperature, and time on depolymerization of acid extracted birch lignin (ABL) were extensively examined. Platinum-rhenium supported on titanium dioxide (PtRe/TiO) exhibited much higher activity on disrupting CO bonds than Pd/C, HZSM-5, Pt/TiO, and Re/TiO. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.132DOI Listing
January 2019
4.494 Impact Factor

Electrically regulating co-fermentation of sewage sludge and food waste towards promoting biomethane production and mass reduction.

Bioresour Technol 2019 Feb 1;279:218-227. Epub 2019 Feb 1.

Shanghai Waterway Engineering Design and Consulting Co., Ltd, Shanghai 200120, PR China.

Microbial electrolysis cell (MEC) was integrated into conventional anaerobic digestion (AD) system (i.e. MEC-AD) to electrochemically regulate the co-fermentation of food waste (FW) and sewage sludge (SS). Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.142DOI Listing
February 2019

Efficient production of androstenedione by repeated batch fermentation in waste cooking oil media through regulating NAD/NADH ratio and strengthening cell vitality of Mycobacterium neoaurum.

Bioresour Technol 2019 Jan 31;279:209-217. Epub 2019 Jan 31.

Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China; Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control, Tianjin 300457, China. Electronic address:

The bioprocess for producing androstenedione (AD) from phytosterols by using Mycobacterium neoaurum is hindered by nicotinamide adenine dinucleotides (NAD and NADH) ratio imbalance, insoluble substrate, and lengthy biotransformation period. This study aims to improve the efficiency of AD production through a combined application of cofactor, solvent, and fermentation engineering technologies. Through the enhanced type II NADH dehydrogenase (NDH-II), the NAD/NADH ratio and ATP levels increased; the release of reactive oxygen species decreased by 42. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.144DOI Listing
January 2019
1 Read

Co-pyrolysis of biomass and soapstock in a downdraft reactor using a novel ZSM-5/SiC composite catalyst.

Bioresour Technol 2019 Jan 25;279:202-208. Epub 2019 Jan 25.

State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA.

A ZSM-5/SiC composite catalyst was synthesized and characterized by Brunauer-Emmett-Teller analysis, X-ray diffraction, and scanning electron microscopy in this study. The composite catalyst had the characteristics of ZSM-5 and SiC, and the surface of SiC grew evenly with a layer of ZSM-5. The effect of the composite catalyst on the product distribution and chemical composition in a co-pyrolysis downdraft system was investigated. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.119DOI Listing
January 2019

Membrane layers intensifying quorum quenching alginate cores and its potential for membrane biofouling control.

Bioresour Technol 2019 Jan 29;279:195-201. Epub 2019 Jan 29.

College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha, Hunan 410082, China.

Quorum quenching (QQ) has been proved to be an efficient method to mitigate biofouling in membrane bioreactors (MBRs). In this paper, in order to enhance practicability of QQ microcapsules, we prepared three types microcapsules with same alginate cores (SAs). The microcapsules with polyacrylonitrile (PAN) layer showed excellent performance in preventing cell leakage from the microcapsules, increasing service life and improving mechanical strength. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09608524193016
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http://dx.doi.org/10.1016/j.biortech.2019.01.134DOI Listing
January 2019
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Organic degradation and extracellular products of pure oxygen aerated activated sludge under different F/M conditions.

Bioresour Technol 2019 Jan 29;279:189-194. Epub 2019 Jan 29.

School of the Environment, Nanjing Normal University, Nanjing 210023, China; Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing 210023, China; State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China. Electronic address:

This study aimed to investigate the effect of food to microorganisms rate (F/M) on organic removal, extracellular polymeric substances (EPS) and soluble microbial products (SMP) of the pure oxygen aerated activated sludge running in batch mode. The F/M rates were controlled by adjusting the MLSS concentrations (2000, 5000, 8000 mg/L) and/or the initial TOC concentrations (100, 500 mg/L). Results showed that at high F/M rate (0. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09608524193016
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http://dx.doi.org/10.1016/j.biortech.2019.01.130DOI Listing
January 2019
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Investigation of reverse ionic diffusion in forward-osmosis-aided dewatering of microalgae: A molecular dynamics study.

Bioresour Technol 2019 Jan 24;279:181-188. Epub 2019 Jan 24.

Physics Department, College of Science, De La Salle University, 2401 Taft Ave., Malate, 1004 Manila, Philippines; Advanced Nanomaterials Investigation and Molecular Simulations (ANIMoS) Research Unit, CENSER, De La Salle University, 2401 Taft Ave., Malate, 1004 Manila, Philippines; De La Salle University - Science and Technology Complex, Biñan, Laguna, Philippines.

This study aimed to investigate the transport mechanisms of ions during forward-osmosis-driven (FO-driven) dewatering of microalgae using molecular dynamics (MD) simulations. The dynamical and structural properties of ions in FO systems of varying NaCl or MgCl draw solution (DS) concentrations were calculated and correlated. Results indicate that FO systems with higher DS concentration caused ions to have lower hydration numbers and higher coordination numbers leading to lower diffusion coefficients. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.109DOI Listing
January 2019

Biological systems for treatment and valorization of wastewater generated from hydrothermal liquefaction of biomass and systems thinking: A review.

Bioresour Technol 2019 Apr 28;278:329-345. Epub 2019 Jan 28.

Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Beijing 100083, China.

Hydrothermal liquefaction (HTL) is one of the most promising platforms to valorize diverse biomass. Yet, a large amount of wastewater is produced containing a large amount of recalcitrant substances. Valorization of the refractory wastewater by biological systems to recapture organic matter and nutrients is not only clearly beneficial for the environment but also good for energy recovery. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09608524193016
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http://dx.doi.org/10.1016/j.biortech.2019.01.127DOI Listing
April 2019
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Depolymerization of lignocellulose of oil palm empty fruit bunch by thermophilic microorganisms from tropical climate.

Bioresour Technol 2019 Jan 26;279:174-180. Epub 2019 Jan 26.

Department of Chemical Process Engineering, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur, Malaysia. Electronic address:

Previous studies on screening of lignin-degrading bacteria mainly focused on the ligninolytic ability of the isolated bacteria for the utilization of lignin monomers. In this study, we focused on the depolymerization of alkali lignin to prove the ability of the isolated thermophilic bacterial strains to utilize and depolymerize more than a monomer of alkali lignin within 7 days of incubation. Indigenous thermophilic bacterial isolates from the palm oil plantation were used to evaluate the depolymerization and utilization of alkali lignin. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.122DOI Listing
January 2019

Microbial community and fermentation characteristic of Italian ryegrass silage prepared with corn stover and lactic acid bacteria.

Bioresour Technol 2019 Jan 26;279:166-173. Epub 2019 Jan 26.

Animal Science and Technology College, Sichuan Agricultural University, Chengdu 610000, China. Electronic address:

The bacterial community determined via PacBio single molecule, real-time sequencing technology (SMRT) and the fermentation characteristics of Italian ryegrass (IR, 82% moisture) silage prepared with corn stover (CS) were investigated. A selected strain of Lactobacillus plantarum (L694) and a commercial inoculant stain of Lactobacillus plantarum (LP) were used as additives. Lactic acid bacteria (LAB) effectively improved silage quality. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.107DOI Listing
January 2019

Algal biorefinery: A sustainable approach to valorize algal-based biomass towards multiple product recovery.

Bioresour Technol 2019 Apr 23;278:346-359. Epub 2019 Jan 23.

Aavesh Green Sustainability Solutions S. De R. L. De. C. V. Monterrey, N.L. 64821, Mexico.

In recent years, ever-increasing socio-economic awareness, and negative impact of excessive petro consumption have redirected the research interests towards bio-resources such as algal-based biomass. In order to meet current bio-economy challenges to produce high-value multiple products at a time, new integrated processes in research and development are necessary. Though various strategies have been posited for conversion of algal-based biomass to fuel and fine chemicals, none of them has been proved as economically viable and energetically feasible. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.104DOI Listing

Effect of low intensity sonic mediated fragmentation of anaerobic granules on biosurfactant secreting bacterial pretreatment: Energy and mass balance analysis.

Bioresour Technol 2019 Jan 25;279:156-165. Epub 2019 Jan 25.

Department of Civil Engineering, Anna University Regional Campus, Tirunelveli, Tamilnadu, India. Electronic address:

In this study, fragmentation of anaerobic granules (AG) was carried out by low intensity sonification (LIS) to release its extracellular polymeric substance (EPS). The experimental outcome of the study shows that 30 s treatment time and 60 W sonic power was effective for fragmentation of AG. The fragmented anaerobic granules were further subjected to pretreatment by biosurfactant secreting bacteria. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.118DOI Listing
January 2019

Enhanced bioconversion of hemicellulosic biomass by microbial consortium for biobutanol production with bioaugmentation strategy.

Bioresour Technol 2019 Jan 25;279:149-155. Epub 2019 Jan 25.

Department of Biology, Shantou University, Shantou, Guangdong 515063, China; STU-UNIVPM Joint Algal Research Center, Shantou University, Shantou, Guangdong 515063, China; Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, Guangdong 515063, China. Electronic address:

As a renewable and sustainable source for next-generation biofuel production, lignocellulosic biomass can be effectively utilized in environmentally friendly manner. In this study, a stable, xylan-utilizing, anaerobic microbial consortium MC1 enriched from mangrove sediments was established, and it was taxonomically identified that the genera Ruminococcus and Clostridium from this community played a crucial role in the substrate utilization. In addition, a butanol-producing Clostridium sp. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.121DOI Listing
January 2019

Production of 1,3-propanediol from pure and crude glycerol using a UASB reactor with attached biomass in silicone support.

Bioresour Technol 2019 Jan 26;279:140-148. Epub 2019 Jan 26.

Universidad Autónoma de Madrid, Department of Molecular Biology, Madrid 28049, Spain. Electronic address:

The 1,3-propanediol (1,3-PDO) yield and productivity from glycerol were studied over a 155-day period. A UASB reactor that also contained silicone support for biomass attachment was used to evaluate the optimal operational conditions and microbiota development. The highest average 1,3-PDO yield was 0. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.125DOI Listing
January 2019

Evaluation of photocatalytic thin film pretreatment on anaerobic degradability of exopolymer extracted biosolids for biofuel generation.

Bioresour Technol 2019 Jan 26;279:132-139. Epub 2019 Jan 26.

Department of Civil Engineering, Anna University Regional Campus, Tirunelveli, India. Electronic address:

This study reports the result of sodium citrate induced exopolymer extraction on the photocatalytic thin film (TiO) pretreatment efficiency of waste activated sludge (WAS). TiO is immobilized through DC spluttering method followed by annealing process. The exopolymer removal of 94. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.124DOI Listing
January 2019

Enhancing delignification and subsequent enzymatic hydrolysis of corn stover by magnesium oxide-ethanol pretreatment.

Bioresour Technol 2019 Jan 26;279:124-131. Epub 2019 Jan 26.

Department of Biological and Agricultural Engineering, Kansas State University, Manhattan, KS 66506, United States. Electronic address:

Corn stover pretreatment by MgO-ethanol was investigated to improve sugar recovery by reducing sugar degradation and enhance enzymatic hydrolysis by improving delignification and reducing inhibitor formation. Results showed MgO as an effective additive and Lewis base, functioned to neutralize the acids released from hemicellulose during pretreatment, reduce monosaccharide degradation and inhibitor formation, and enhance delignification. The optimal pretreatment conditions were 50% ethanol, 0. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.123DOI Listing
January 2019
4.494 Impact Factor

Alkaline fermentation of waste activated sludge with calcium hydroxide to improve short-chain fatty acids production and extraction efficiency via layered double hydroxides.

Bioresour Technol 2019 Jan 28;279:117-123. Epub 2019 Jan 28.

Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.

Ca(OH) addition was proposed to improve short chain fatty acids (SCFAs) production via alkaline fermentation of waste activated sludge (WAS), with CO and PO being removed simultaneously, so that the SCFAs extraction efficiency could be improved. Alkaline fermentation of WAS with Ca(OH) and NaOH addition were performed respectively, and the efficiencies of SCFAs extraction from the fermentation liquids via in situ layered double hydroxides (LDHs) were investigated. The results showed that, the SCFAs production was much more improved with NaOH addition than that with Ca(OH) addition. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.128DOI Listing
January 2019

Bio-oil upgrading with catalytic pyrolysis of biomass using Copper/zeolite-Nickel/zeolite and Copper-Nickel/zeolite catalysts.

Bioresour Technol 2019 Jan 18. Epub 2019 Jan 18.

Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia.

The bio-oil obtained from a general pyrolysis process contains a higher concentration of oxygenated compounds and the resultant physical and chemical properties make it an unsuitable drop-in fuel. The oxygenated compounds in the bio-oil can be converted into hydrocarbons or less oxygenated compounds with the application of catalysts. This study demonstrated the bio-oil upgrading with the application of catalysts, comparing the catalytic effect of combined mono-metallic catalysts (Cu/zeolite and Ni/zeolite) and sole bi-metallic catalyst (CuNi/zeolite) on the composition of bio-oil and pyrolytic gases. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.067DOI Listing
January 2019
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Microwave-assisted pretreatment of maize distillery stillage with the use of dilute sulfuric acid in the production of cellulosic ethanol.

Bioresour Technol 2019 Apr 18;278:318-328. Epub 2019 Jan 18.

Kazimierz Wielki University, Department of Biotechnology, 85-671 Bydgoszcz, ul. K. J. Poniatowskiego 12, Poland.

This study aimed to evaluate the effectiveness of microwave-assisted pretreatment in production of cellulosic bioethanol from maize distillery stillage. High glucose concentration (104.4 ± 0. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.068DOI Listing
April 2019
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Hydrothermal liquefaction of cellulose in ammonia/water.

Bioresour Technol 2019 Apr 15;278:311-317. Epub 2019 Jan 15.

School Materials Science and Engineering, University of Jinan, Jinan 250022, China. Electronic address:

In order to obtain the N-containing organics from cellulose under mild conditions, hydrothermal liquefaction of cellulose in the presence of ammonia was conducted in this study. The results showed that the increasing reaction temperature and prolonging time facilitated the conversion of cellulose in hydrothermal liquefaction (HTL) with NH·HO and decreased the amount of solid residue. Reaction temperature showed more influence than reaction time on solid residue formation. Read More

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http://dx.doi.org/10.1016/j.biortech.2019.01.061DOI Listing
April 2019
4.494 Impact Factor