« Previous AbstractThe post plasma-catalytic decomposition of toluene over K-modified OMS-2 catalysts at ambient temperature: Effect of K(+) loading amount and reaction mechanism    Next AbstractOlfactory coding of intra- and interspecific pheromonal messages by the male Mythimna separata in North China »

Bioresour Technol

Title:		Synergistic improvement of short-chain fatty acid production from waste activated sludge via anaerobic fermentation by combined plasma-calcium peroxide process
Author(s):		Jiang N; He J; Zhang A; Zhou Y; Zheng M; Xu X; Clement Miruka A; Li X; Liu Y; Xue G;
Address:		"College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China. College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China; Shanghai institute of pollution control and ecological security, Shanghai 200092, China. Electronic address: aizhang@dhu.edu.cn. Department of Civil & Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada; Key Laboratory of Organic Compound Pollution Control Engineering, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China. College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China; School of Chemistry and Material Science, Technical University of Kenya, Nairobi 52428-00200, Kenya"
Journal Title:		Bioresour Technol
Year:		2022
Volume:		20220809
Issue:
Page Number:		127754 -
DOI:		10.1016/j.biortech.2022.127754
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"In this study, the combination of dielectric barrier discharge plasma (DBD) with calcium peroxide (CaO(2)) achieved significant synergistic effects in promoting hydrolysis of waste activated sludge (WAS) and short-chain fatty acid (SCFA) production during anaerobic fermentation. Compared with the control, DBD/CaO(2) pretreatment increased SCFA production by 116 %, acetic acid ratio by 39 %, and sludge reduction by 30 % under the optimal conditions (discharge power = 76.5 W, CaO(2) dosage = 0.05 g/g VSS). Mechanism investigations elucidated that DBD/CaO(2) enhanced the generation of *OH, (1)O(2), and *O(2)(-), synergistically promoted decomposing extracellular polymeric substances (EPS), lysing cells, releasing biodegradable substances, and enhancing acetic acid-enriched SCFA accumulation from fermentation. Meanwhile, Illumina MiSeq sequencing analysis revealed that the enrichment of hydrolytic and SCFAs-forming bacteria and the decrease in SCFAs-consuming bacteria by DBD/CaO(2) treatment also contributed. This work provides an effective method to boost the SCFA production from WAS fermentation"
Keywords:		"Anaerobiosis *Fatty Acids, Volatile Fermentation Hydrogen-Ion Concentration Peroxides *Sewage Anaerobic fermentation Calcium peroxide (CaO(2)) Non-thermal plasma Reactive species Sludge pretreatment;"
Notes:		"MedlineJiang, Nan He, Jinling Zhang, Ai Zhou, Yongquan Zheng, Ming Xu, Xianbao Clement Miruka, Andere Li, Xiang Liu, Yanan Xue, Gang eng England 2022/08/12 Bioresour Technol. 2022 Oct; 361:127754. doi: 10.1016/j.biortech.2022.127754. Epub 2022 Aug 9"