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Understanding the microbial processes on carbon brushes that accelerate methanogenesis of long-chain fatty acids in anaerobic digestion.
Water Res
December 2024
MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science & Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China. Electronic address:
Lipids offer high energy recovery potential during anaerobic digestion (AD), but their hydrolysis generates long-chain fatty acids (LCFAs), which are difficult to biodegrade. The introduction of microbial electrolysis cells has been widely recognized as a promising strategy to enhance AD. However, it is still under debate whether the electrical circuit needs to be connected, as certain electrodes with large specific surface areas have been reported to enhance direct interspecies electron transfer (DIET) without requiring an external power supply.
View Article and Find Full Text PDFElectric stimulation mitigated the mixed microplastic inhibition to anaerobic digestion during wastewater treatment.
Environ Pollut
October 2024
MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Carbon Neutrality Science Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China. Electronic address:
The presence of mixed microplastics (MPs) in anaerobic wastewater treatment processes has been shown to impede fermentation performance by suppressing microbial activity. Microbial electrosynthesis (MES), with its extensive potential, offers a promising solution for refractory substances management and methane recovery, achieved through the enhancement of microbial metabolism and interspecies electron transfer. This study, therefore, delves into the functional impacts and the microbial response to MES in the remediation of wastewater contaminated with mixed-MPs.
View Article and Find Full Text PDFLinking microbial mechanism with bioelectricity production in sludge matrix-fed microbial fuel cells: Freezing/thawing liquid versus fermentation liquor.
Sci Total Environ
January 2021
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, China. Electronic address:
This first-attempt study elucidated the microbial mechanism associated with bioelectricity output in microbial fuel cells (MFCs) fed with sludge matrices of freezing/thawing (F/T) liquid versus fermentation liquor, while a novel schematic elucidation for exploring cooperative interactions in anodic microbial consortia of MFCs supplied with such two feeds toward electrogenesis was put forward. Moreover, the F/T liquid cultivated main genera of Azospira, Povalibacter, Thauera, Terrimonas, Alicycliphilus, Dokdonella and Simplicispira for dual organics degradation and electrogenesis with power density of 0.152 mW/m and electrogenesis efficiency of 1.
View Article and Find Full Text PDFEnhanced anaerobic fermentation of waste activated sludge by NaCl assistant hydrolysis strategy: Improved bio-production of short-chain fatty acids and feasibility of NaCl reuse.
Bioresour Technol
September 2020
School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
This study developed an economical approach for enhancing short-chain fatty acids (SCFAs) production from waste activated sludge (WAS) by NaCl assistant anaerobic fermentation. With NaCl addition at 20 g/L, sludge disintegration with extracellular polymeric substance (EPS) disruption and cell lysis were induced owing to the attack of osmotic pressure, which facilitated WAS solubilization with release of biodegradable organic matters. The SCOD sharply increased to 4092 mg/L (SCOD/TCOD = 23.
View Article and Find Full Text PDF[Treatment of contusion of moderate severity in children in outpatient clinics].
Zh Nevrol Psikhiatr Im S S Korsakova
September 2020
Institute of Cellular and Intracellular Symbiosis, Ural Branch of RAS, Orenburg, Russia.
Objective: To determine the efficacy of cortexin in treatment of traumatic brain injuries with contusion of moderate severity in children in an outpatient clinics.
Materials And Methods: Seventy-four patients, aged 6-13 years, with a traumatic brain injury and a moderate brain contusion were examined. A comprehensive clinical examination, including neurological and ophthalmological examinations, EEG, brain CT scan, testing using a set of experimental psychological techniques, was performed.
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