719 results match your criteria washing cycles


Phenanthrene biodegradation in a fed-batch reactor treating a spent sediment washing solution: Techno-economic implications for the recovery of ethanol as extracting agent.

Chemosphere 2021 Jul 7;286(Pt 1):131361. Epub 2021 Jul 7.

Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy.

The continuous dredging of sediments contaminated by polycyclic aromatic hydrocarbons such as phenanthrene (PHE) has required the employment of high-efficiency technologies, including sediment washing (SW). However, the large amount of generated spent SW effluents requires the development of effective, eco-friendly and cost-saving approaches, which can tackle the waste formation in favor of the recovery of chemicals. This study proposes the treatment of a spent SW solution containing ethanol (EtOH) as extracting agent, by testing different initial PHE concentrations (i. Read More

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Chitosan Nanoparticles Functionalized Viscose Fabrics as Potentially Durable Antibacterial Medical Textiles.

Materials (Basel) 2021 Jul 5;14(13). Epub 2021 Jul 5.

Faculty of Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia.

This research proposed two pretreatments of viscose fabrics: oxidation with 2,2,6,6-tetramethylpiperidine-1-oxy radical (TEMPO) and coating with TEMPO-oxidized cellulose nanofibrils (TOCN), to introduce functional groups (COOH and CHO) suitable for irreversible binding of chitosan nanoparticles without and with embedded zinc (NCS and NCS + Zn, respectively) and consequently achieving washing durable antibacterial properties of the chitosan nanoparticles functionalized fabrics. The characterizations of pretreated and chitosan nanoparticles functionalized fabrics were performed by FTIR and XPS spectroscopy, elemental analysis, inductively coupled plasma optical emission spectrometry, zeta potential measurements, scanning electron microscopy, determination of COOH and CHO groups content, and antimicrobial activity under dynamic contact conditions. Influence of pretreatments on NCS and NCS + Zn adsorption, chemical, electrokinetic, and antibacterial properties as well as morphology, and washing durability of NCS and NCS + Zn functionalized fabrics were studied and compared. Read More

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Technical textiles modified with immobilized carbon dots synthesized with infrared assistance.

J Colloid Interface Sci 2021 Jul 7;604:15-29. Epub 2021 Jul 7.

Department of Pretreatment and Finishing of Cellulosic Fibers, Textile Research Division, National Research Centre, Scopus affiliation ID 60014618, 33 EL Buhouth St., Dokki, Giza 12622, Egypt. Electronic address:

Carbon quantum dots "CQDs" were investigated as photo-luminescent nanomaterials as it advantageous with nontoxicity to be alternative for metallic-nanomaterials in different purposes. Therefore, the presented report demonstrates an innovative strategy for industrialization of antimicrobial/fluorescent cotton textiles via exploitation of "CQDs". Unique/novel infrared-assisted technique was currently investigated for clustering "CQDs" form carboxymethyl cellulose. Read More

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A comparative study on high-efficient reduction of bromate in neutral solution using zero-valent Al treated by different procedures.

Sci Total Environ 2021 Jul 2;795:148786. Epub 2021 Jul 2.

Energy Materials & Physics Group, Department of Physics, Shanghai University, Shanghai 200444, China; Institute of Low-Dimensional Carbon and Device Physics, Shanghai University, Shanghai 200444, China; Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, 99 Shangda Road, Shanghai 200444, China. Electronic address:

Bromate, a toxic by-product of bromide-containing drinking water after disinfecting with ozone, has attracted much attention in the past two decades. Traditional methods to activate zero-valent metals for reducing bromate are to eliminate their surface oxide layer by acid washing. In this work, for the first time, zero-valent Al (ZVAl) was surface treated by the following procedures including soaking, soaking and freeze-drying, soaking and heat-treating, and γ-AlO covering Al particle surfaces (GCAP). Read More

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[Research progress of microextraction by packed sorbent and its application in microvolume sample extraction].

Se Pu 2021 Mar;39(3):219-228

State key Laboratory of Nuclear, Biological and Chemical Protection for Civilian, Beijing 102205, China.

Microextraction is a rapidly developing sample preparation technology in the field of analytical chemistry, which is seeing widespread application. Accurate sample preparation can not only save time but also improve the efficiency of analysis, determination, and data quality. At present, sample pretreatment methods must be rapid, allow for miniaturization, automation, and convenient online connection with analytical instruments. Read More

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Printed Graphene, Nanotubes and Silver Electrodes Comparison for Textile and Structural Electronics Applications.

Sensors (Basel) 2021 Jun 11;21(12). Epub 2021 Jun 11.

Institute of Metrology and Biomedical Engineering, Faculty of Mechatronics, Warsaw University of Technology, Św. Andrzeja Boboli 8, 02-525 Warsaw, Poland.

Due to the appearance of smart textiles and wearable electronics, the need for electro-conductive textiles and electro-conductive paths on textiles has become clear. In this article the results of a test of developed textile electro-conductive paths obtained by applying the method of screen printing pastes containing silver nanoparticles and carbon (graphene, nanotubes, graphite) are presented. Conducted research included analysis of the adhesion test, as well as evaluation of the surface resistance before and after the washing and bending cycles. Read More

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Stable and Durable Conductive Superhydrophobic Coatings Prepared by Double-Layer Spray Coating Method.

Nanomaterials (Basel) 2021 Jun 7;11(6). Epub 2021 Jun 7.

Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, China.

Herein, a low cost, durable, and stable conductive superhydrophobic composite coating (CSC coating) was fabricated on a Q345 steel surface by simple double-layer spray coating. The water contact angle (WCA) of the CSC coating was 160° and the sliding angle (SA) was 3°. In addition to its excellent conductivity (3. Read More

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Evaluation of Rodent Cage Processing Using Reduced Water Temperatures.

J Am Assoc Lab Anim Sci 2021 Jul 28;60(4):442-450. Epub 2021 Jun 28.

University Laboratory Animal Resources, The Ohio State University, Columbus, Ohio.

Studies published in 1994 and 2000 established a temperature range of 143-180 °F for effective cage sanitization in animal facilities. These 2 studies were, respectively, theoretical and based on experiments using hot water to sanitize bacteria-coated test tubes. However, such experimental methods may not capture the practical advantages of modern washing technology or account for the routine use of detergent in cage wash. Read More

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Design and fabrication of polydopamine based superhydrophobic fabrics for efficient oil-water separation.

Soft Matter 2021 Jul;17(27):6542-6551

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China.

In this work, we prepare a [email protected] with high water contact angle (WCA = 155°). Combining dopamine self-polymerization and a sol-gel method, SiO2 is in situ grown on a PDA-modified fabric surface to synergistically construct micro-nano rough structures. Finally, a superhydrophobic fabric is successfully obtained after coating the fabric with a layer of PDMS. Read More

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Efficient Reduction of Selenite to Elemental Selenium by Liquid-Phase Catalytic Hydrogenation Using a Highly Stable Multiwalled Carbon Nanotube-Supported Pt Catalyst Coated by N-Doped Carbon.

ACS Appl Mater Interfaces 2021 Jun 16. Epub 2021 Jun 16.

State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Nanjing, Jiangsu 210046, China.

A stable catalyst, Pt/carbon nanotube (CNT) coated with N-doped carbon (Pt/[email protected]), was designed to reduce selenite (Se(IV)) in water to elemental selenium by liquid-phase catalytic hydrogenation. Commercial Pt/C, pristine Pt/CNT, and carbon-coated Pt/CNT (Pt/[email protected]) were used for benchmarking. The Pt particles in Pt/[email protected] were completely embedded beneath the coatings to minimize leaching and were not easily accessible to Se(IV). Read More

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Superior removal of As(III) and As(V) from water with Mn-doped β-FeOOH nanospindles on carbon foam.

J Hazard Mater 2021 Jun 7;418:126347. Epub 2021 Jun 7.

Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720-1710, USA. Electronic address:

Arsenic pollution of water is one of the severest environmental challenges threatening human health. Iron-based nanomaterials have been demonstrated effective in arsenic removal. However, they generally suffer from low removal efficiency towards highly toxic As(III), loss of active sites owing to agglomeration, and poor reusability. Read More

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Evaluating scenarios for carbon reduction using different tableware in China.

Sci Total Environ 2021 Jun 5;791:148279. Epub 2021 Jun 5.

School of Urban Planning and Design, Peking University Shenzhen Graduate School, Shenzhen 518055, China. Electronic address:

Global consumption of disposable plastic tableware (DPT) is massive because it is durable, light and inexpensive. Using the life cycle assessment method, we found that DPT for per person per meal emitted 597 g of CO and was far more than that of reusable plastic tableware (RPT, 7.00 g), ceramic tableware (9. Read More

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Preparation of Human Tissues Embedded in Optimal Cutting Temperature Compound for Mass Spectrometry Analysis.

J Vis Exp 2021 04 27(170). Epub 2021 Apr 27.

Department of Biology, Virginia Commonwealth University; Massey Cancer Center;

Sphingolipids are cellular components that have well-established roles in human metabolism and disease. Mass spectrometry can be used to determine whether sphingolipids are altered in a disease and investigate whether sphingolipids can be targeted clinically. However, properly powered prospective studies that acquire tissues directly from the surgical suite can be time consuming, and technically, logistically, and administratively challenging. Read More

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Combined Platelet and Erythrocyte Salvage: Evaluation of a New Filtration-based Autotransfusion Device.

Anesthesiology 2021 Aug;135(2):246-257

Background: The SAME device (i-SEP, France) is an innovative filtration-based autotransfusion device able to salvage and wash both red blood cells and platelets. This study evaluated the device performances using human whole blood with the hypothesis that the device will be able to salvage platelets while achieving a erythrocyte yield of 80% and removal ratios of 90% for heparin and 80% for major plasma proteins without inducing signification activation of salvaged cells.

Methods: Thirty healthy human whole blood units (median volume, 478 ml) were diluted, heparinized, and processed by the device in two consecutive treatment cycles. Read More

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Preparation of conductive cellulose fabrics with durable antibacterial properties and their application in wearable electrodes.

Int J Biol Macromol 2021 Jul 3;183:651-659. Epub 2021 May 3.

School of Light Industry and Engineering, South China University of Technology, Guangzhou 510640, China. Electronic address:

Electroless silver plating on fabrics can obtain conductive and antibacterial bifunctional materials which can be used as electrodes in wearable electronic products. However, these activities are deteriorated easily after washing because of the falling off of silver coating resulted from the weak adhesion. In order to improve the binding force between silver and cellulose fabrics, 3-mercaptopropytrimethoxysilane (MPTS) was applied to modify cellulose fabrics before silver electroless plating to develop the durable conductive fabrics with excellent antibacterial. Read More

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Electrical Properties of Textiles Treated with Graphene Oxide Suspension.

Materials (Basel) 2021 Apr 16;14(8). Epub 2021 Apr 16.

Laboratory of Physics and Technology of Three-Dimensional Nanostructures, Rzhanov Institute of Semiconductor Physics SB RAS, 630090 Novosibirsk, Russia.

Two-dimensional nanomaterials such as graphene can provide various functional properties to textiles, which have great potential in sportswear, healthcare etc. In this study, the properties of nylon and cotton-based electronic textiles coated with reduced graphene oxide are investigated. After reduction of graphene oxide coating in hydrazine vapor, e-textiles with a resistance of ~350 Ω/sq for nylon, and ~1 kΩ/sq for cotton were obtained. Read More

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Wastes from Agricultural Silage Film Recycling Line as a Potential Polymer Materials.

Polymers (Basel) 2021 Apr 23;13(9). Epub 2021 Apr 23.

Paint & Plastics Department in Gliwice, Institute for Engineering of Polymer Materials and Dyes, 50 A Chorzowska Street, 44-100 Gliwice, Poland.

The recycling of plastics is currently one of the most significant industrial challenges. Due to the enormous amounts of plastic wastes generated by various industry branches, it is essential to look for potential methods for their utilization. In the presented work, we investigated the recycling potential of wastes originated from the agricultural films recycling line. Read More

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Membrane-Supported Layered Coordination Polymer as an Advanced Sustainable Catalyst for Desulfurization.

Molecules 2021 Apr 21;26(9). Epub 2021 Apr 21.

REQUIMTE/LAQV & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal.

The application of a catalytic membrane in the oxidative desulfurization of a multicomponent model diesel formed by most refractory sulfur compounds present in fuel is reported here for the first time. The catalytic membrane was prepared by the impregnation of the active lamellar [Gd(Hnmp)(HO)]Cl·2HO (UAV-59) coordination polymer (CP) into a polymethyl methacrylate (PMMA, acrylic glass) supporting membrane. The use of the catalytic membrane in the liquid-liquid system instead of a powder catalyst arises as an enormous advantage associated with the facility of catalyst handling while avoiding catalyst mass loss. Read More

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Development and Investigation of PEDOT:PSS Composition Coated Fabrics Intended for Microwave Shielding and Absorption.

Polymers (Basel) 2021 Apr 7;13(8). Epub 2021 Apr 7.

CeNTI-Centre for Nanotechnology and Smart Materials, 4760-034 Vila Nova de Famalicão, Portugal.

This study presents the investigation of the electromagnetic properties and resistance performance of electrically conductive fabrics coated with composition containing the conjugated polymer system poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS). The developed fabrics were intended for electromagnetic radiation (EMR) shielding in microwave range and for absorbing microwaves in radar operating range, so as to act as radar absorbing materials (RAM). The measurements of reflection and transmission of the developed fabrics were performed in a frequency range of 2-18 GHz, which covers the defined frequencies relevant to the application. Read More

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The Stability of Model Human Coronaviruses on Textiles in the Environment and during Health Care Laundering.

mSphere 2021 04 28;6(2). Epub 2021 Apr 28.

Infectious Disease Research Group, The Leicester School of Pharmacy, De Montfort University, Leicester, United Kingdom.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) persists on stainless steel and plastic for up to 7 days, suggesting that coronavirus disease 2019 (COVID-19) could be spread by fomite transmission. There is limited research on the stability of SARS-CoV-2 on textiles, with the risk of textiles acting as fomites not being well understood. To date, there does not appear to be any published research on the stability of coronaviruses during laundering, which is required to determine the efficacy of current laundering policies in the decontamination of health care textiles. Read More

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Detection of the residual concentration of sodium dodecyl sulfate in the decellularized whole rabbit kidney extracellular matrix.

Cell Tissue Bank 2021 Apr 28. Epub 2021 Apr 28.

Pediatric Urology and Regenerative Medicine Research Center, Pediatric Center of Excellence, Department of Pediatric Urology, Children's Medical Center, Tehran University of Medical Sciences, No. 62, Dr. Gharibs Street, Keshavarz Boulevard, 1419733151, Tehran, Iran.

To optimize rabbit kidney decellularization protocol, using sodium dodecyl sulfate (SDS) as a commonly used detergent, a methylene blue based assay was employed for detecting the minimum nontoxic SDS level for future cell seeding. The rabbit kidney tissues were decellularized with the perfusion-based method and underwent several investigations to determine the efficacy of decellularization in preserving the extracellular matrix (ECM) and cell removal. SDS detection was performed by incubating with methylene blue and subsequent extraction with chloroform. Read More

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Integration of microfluidic sample preparation with PCR detection to investigate the effects of simultaneous DNA-Inhibitor separation and DNA solution exchange.

Anal Chim Acta 2021 May 26;1160:338449. Epub 2021 Mar 26.

Department of Mechanical Engineering, York University, Toronto, ON, Canada. Electronic address:

In this paper, we applied a curved-channel microfluidic device to separate DNA from PCR-inhibitor-containing water and simultaneously wash them into clean water for detection using a portable PCR thermocycler. Environmental DNA (eDNA) sampling has become an effective surveying approach for detecting rare organisms. However, low concentration eDNA molecules may be masked by PCR inhibitors during amplification and detection, increasing the risk of false negatives. Read More

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Comparison Between a Standard and SalivaDirect RNA Extraction Protocol for Molecular Diagnosis of SARS-CoV-2 Using Nasopharyngeal Swab and Saliva Clinical Samples.

Front Bioeng Biotechnol 2021 29;9:638902. Epub 2021 Mar 29.

Instituto Politécnico Nacional, Centro de Biotecnologia Genomica, Reynosa, Mexico.

During the COVID-19 pandemic, a certified laboratory of Tamaulipas, Mexico has processed over 100,000 samples of COVID-19 suspected patients, working a minimum of 100 tests daily. Thus, it would be beneficial for such certified laboratories nationwide to reduce the time and cost involved in performing the diagnosis of COVID-19, from sample collection, transportation to local lab, processing of samples, and data acquisition. Here, 30 nasopharyngeal swab and saliva samples from the same COVID-19 individuals were assessed by a standard nucleic acid extraction protocol, including protein lysis with proteinase K followed by binding to column, washing, and elution, and by the SalivaDirect protocol based on protein lysis, skipping the other steps to reduce processing time and costs. Read More

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Nature-Inspired Hierarchical Protrusion Structure Construction for Washable and Wear-Resistant Superhydrophobic Textiles with Self-Cleaning Ability.

ACS Appl Mater Interfaces 2021 Apr 12;13(15):18142-18151. Epub 2021 Apr 12.

Fraunhofer USA, Inc., Center Midwest, Division for Coatings and Diamond Technologies, Michigan State University, East Lansing, Michigan 48824, United States.

The use of toxic components and short longevity greatly restricted the commercial application of superhydrophobic surfaces in oil-water separation, antifouling, and self-cleaning. To address these concerns, a durable, robust, and fluorine-free superhydrophobic fabric is prepared on account of inspiration of nature. In this work, submicrometer-sized silica particles with different particle sizes are deposited onto cotton fabrics, followed by hydrophobic modification of poly(dimethylsiloxane) (PDMS), and consequently bonded the substrate and coating via powerful covalent bonds through a simple dip-coating technique. Read More

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Efficacy of interceptor® G2, a long-lasting insecticide mixture net treated with chlorfenapyr and alpha-cypermethrin against Anopheles funestus: experimental hut trials in north-eastern Tanzania.

Malar J 2021 Apr 9;20(1):180. Epub 2021 Apr 9.

Pan-African Malaria Vector Research Consortium (PAMVERC), P.O.Box 81, Muheza, Tanga, Tanzania.

Background: The effectiveness of long-lasting insecticidal nets (LLIN), the primary method for preventing malaria in Africa, is compromised by evolution and spread of pyrethroid resistance. Further gains require new insecticides with novel modes of action. Chlorfenapyr is a pyrrole insecticide that disrupts mitochrondrial function and confers no cross-resistance to neurotoxic insecticides. Read More

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MORPHOLOGICAL CHARACTERISTICS OF ACELLULAR DERMAL MATRIX MANUFACTURING.

Wiad Lek 2021 ;74(3 cz 1):418-422

HORBACHEVSKY TERNOPIL NATIONAL MEDICAL UNIVERSITY, TERNOPIL, UKRAINE.

Objective: The aim is to develop a method of the acellular dermal matrix manufacturing from pig's skin dermis while preserving the native structure.

Patients And Methods: Materials and methods: Combination of physical and chemical effects on the dermis underlies in the process of an acellular dermal matrix manufacturing. Dermal collection of 1. Read More

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Triboelectric Yarns with Electrospun Functional Polymer Coatings for Highly Durable and Washable Smart Textile Applications.

ACS Appl Mater Interfaces 2021 Apr 30;13(14):16876-16886. Epub 2021 Mar 30.

Department of Materials Science and Metallurgy, University of Cambridge, CB3 0FS Cambridge, United Kingdom.

Triboelectric generators are excellent candidates for smart textiles applications due to their ability to convert mechanical energy into electrical energy. Such devices can be manufactured into yarns by coating a conductive core with a triboelectric material, but current triboelectric yarns lack the durability and washing resistance required for textile-based applications. In this work, we develop a unique triboelectric yarn comprising a conducting carbon nanotube (CNT) yarn electrode coated with poly(vinylidene fluoride) (PVDF) fibers deposited by a customized electrospinning process. Read More

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Aqueous Nd capture using a carboxyl-functionalized porous carbon derived from ZIF-8.

J Colloid Interface Sci 2021 Jul 15;594:702-712. Epub 2021 Mar 15.

Department of Chemistry and Chemical Engineering, Inha University, Incheon 402-751, Republic of Korea. Electronic address:

A porous graphitic carbon was obtained via the pyrolysis of a zeolite imidazolate framework (ZIF-8) under Ar atmosphere. Then, the carbon was functionalized with carboxylic groups and applied for separation of neodymium ions (Nd) from water. The adsorbent (denoted as C-ZDC) was characterized by X-ray diffraction, N adsorption-desorption isotherms, infrared spectroscopy, X-ray photoelectron spectroscopy, scanning and transition electron microscopies, thermogravimetric analysis, and Boehm titration. Read More

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Surface-reacted calcium carbonate microparticles as templates for lactoferrin encapsulation.

J Colloid Interface Sci 2021 Jul 17;594:362-371. Epub 2021 Mar 17.

Omya International AG, Baslerstrasse 42, CH-4665 Oftringen, Switzerland.

Microencapsulation helps to improve bioavailability of a functional whey protein, lactoferrin (Lf), in adults. Herein, we report the Lf loading capacity (LC) and retention efficiency (RE) in the microparticles of surface-reacted calcium carbonate (SRCC) of different types and compare them to those of widely used vaterite microparticles. The LCs and REs are analyzed in connection to the total surface area and the volume of intraparticle pores. Read More

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Durable superhydrophobic cotton fabrics prepared by surface-initiated electrochemically mediated ATRP of polyhedral vinylsilsesquioxane and subsequent fluorination via thiol-Michael addition reaction.

J Colloid Interface Sci 2021 Jul 9;593:79-88. Epub 2021 Mar 9.

College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China. Electronic address:

Fluorinated polyhedral oligomeric silsesquioxane (F-POSS) is one of the most popular candidates at present for superhydrophobic coating. Because of its ultralow surface energy, F-POSS has usually been dissolved with expensive fluoro-solvents, and the melting temperature of F-POSS is not high (122-140 °C), which will cause its loss during use. So trying to polymerize/crosslink F-POSS molecules and/or directly graft F-POSS to substrate is important. Read More

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