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Sci Total Environ 2021 Apr 5;782:146882. Epub 2021 Apr 5.

Gruppo Ricicla labs., DiSAA, Università degli Studi di Milano, Via Celoria 2, 20133 Milan, Italy. Electronic address:

The use of digestate in agriculture represents an opportunity for reducing the use of synthetic fertilizers while promoting nutrient and organic matter recycling, i.e. contributing to a circular economy. Read More

Bioresour Technol 2021 Apr 7;332:125119. Epub 2021 Apr 7.

Laboratory of Environment-Enhancing Energy (E2E), Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China. Electronic address:

Microbial stability and evolution are a critical aspect for biosensors, especially in detecting dynamic and emerging anaerobic biohythane production. In this study, two upflow air-cathode chamber microbial fuel cells (UMFCs) were developed for in situ monitoring of the biohydrogen and biomethane reactors under a COD range of 1000-6000 mg/L and 150-1000 mg/L, respectively. Illumina MiSeq sequencing evidenced the dramatic shift of dominant microbial communities in UMFCs from hydrolytic and acidification bacteria (Clostridiaceae_1, Ruminococcaceae, Peptostreptococcaceae) to acetate-oxidizing bacteria (Synergistaceae, Dysgonomonadaceae, Spirochaetaceae). Read More

Sci Rep 2021 Apr 12;11(1):7933. Epub 2021 Apr 12.

Civil and Environmental Engineering, University of Alberta, 9211-116 Street NW, Edmonton, AB, T6G 1H9, Canada.

The microbial electrolysis cell assisted anaerobic digestion holds great promises over conventional anaerobic digestion. This article reports an experimental investigation of extracellular polymeric substances (EPS), reactive oxygen species (ROS), and the expression of genes associated with extracellular electron transfer (EET) in methanogenic biocathodes. The MEC-AD systems were examined using two cathode materials: carbon fibers and stainless-steel mesh. Read More

Bioresour Technol 2021 Mar 26;332:125039. Epub 2021 Mar 26.

State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China.

Rice straw (RS) is one of abundant agricultural waste for biogas production in China. However, the low carbon-methane conversion rate limits its wide application due to the low degradation rate of RS during fermentation. This study investigated the effect of acclimatized paddy soil microorganisms using swine wastewater on degradation of RS before anaerobic digestion. Read More

Environ Res 2021 Apr 9:111119. Epub 2021 Apr 9.

National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China. Electronic address:

The microorganisms in marine sediment are promising candidates for the treatment of the saline wastes due to their property of salt tolerance. However, the knowledge about the microbial community and property of the marine sediments is still limited. In the present study, the salt tolerance of the microorganisms in the marine sediment that was collected from a marine fish farm was investigated by being used as inoculum for anaerobic digestion. Read More