利用嗜盐菌在空气阴极微生物燃料电池中处理鱼市场废水并生产能源。
Treatment of fish market wastewater and energy production using halophiles in air cathode microbial fuel cell.
机构信息
Department of Marine Biology, Faculty of Marine Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.
Department of Marine Biology, Faculty of Marine Sciences, King Abdulaziz University, Jeddah, Saudi Arabia; Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
出版信息
J Environ Manage. 2021 Aug 15;292:112752. doi: 10.1016/j.jenvman.2021.112752. Epub 2021 May 10.
The present study is aimed to treat the fish market wastewater coupled with electricity production using halophiles in microbial fuel cell (MFC) technology under saline condition (4.6%). Halophilic consortium obtained from desalination plant brine water was used in the lab scale air cathode microbial fuel cell (ACMFC) reactor equipped with carbon brush and carbon cloth as anode and cathode. ACMFC (260 mL capacity) was operated with fish market saline wastewater at different organic load (OL) from 0.41 to 2.01 g COD/L with 20 day HRT (Hydraulic Retention Time). Total chemical oxygen demand (TCOD) removal at OL 0.41, 0.82 and 1.21 g COD/L was 68%, 77% and 84% in ACMFC. Correspondingly, soluble chemical oxygen demand (SCOD) removal was 63%, 74% and 81% respectively. The optimized OL for the treatment of fish market wastewater was 1.62 g COD/L, where the TCOD (90%), SCOD (88%), TSS (Total Suspended Solids) removal of 71% coupled with power generation of 902 mV (Power density 420 mW/m, Current density 550 mA/m) was recorded. Columbic efficiency at OL 0.41 g COD/L was 56% and declined at OL 0.82, 1.21, 1.62 and 2.01 g COD/L to 48%, 39%, 29% and 17%. Increment in OL to 2.01 g COD/L revealed decrease in TCOD (64%), SCOD (60%), TSS (45%) removal and energy production. The bacterial strains present in the halophilic consortium were Ochrobactrum, Marinobacter, Bacillus, Rhodococcus, Flavobacterium, Alicyclobacillus, Pseudomonas, Martelella, Stenotrophomonas, Xanthobacter, and Microbacterium. High dominance of Ochrobactrum, Marinobacter and Bacillus was observed at optimized OL of 1.62 g COD/L in ACMFC. Further research on pilot scale MFC lead the way to technology transfer for the treatment of wastewater with corresponding energy production in industrial sector.
本研究旨在利用嗜盐微生物在微生物燃料电池（MFC）技术中处理鱼类市场废水并同时发电，该技术在盐度条件（4.6%）下运行。从海水淡化厂的卤水获得的嗜盐生物群落被用于配备碳刷和碳纤维布作为阳极和阴极的实验室规模空气阴极微生物燃料电池（ACMFC）反应器。ACMFC（260 毫升容量）在不同有机负荷（OL）下运行，OL 范围为 0.41 至 2.01 g COD/L，水力停留时间（HRT）为 20 天。在 OL 为 0.41、0.82 和 1.21 g COD/L 时，ACMFC 对总化学需氧量（TCOD）的去除率分别为 68%、77%和 84%。相应地，可溶性化学需氧量（SCOD）的去除率分别为 63%、74%和 81%。处理鱼类市场废水的最佳 OL 为 1.62 g COD/L，在此条件下，TCOD（90%）、SCOD（88%）和 TSS（总悬浮固体）的去除率为 71%，同时产生 902 mV 的电量（功率密度为 420 mW/m，电流密度为 550 mA/m）。在 OL 为 0.41 g COD/L 时，库仑效率为 56%，而在 OL 为 0.82、1.21、1.62 和 2.01 g COD/L 时，库仑效率分别下降至 48%、39%、29%和 17%。OL 增加到 2.01 g COD/L 会降低 TCOD（64%）、SCOD（60%）和 TSS（45%）的去除率和能量产生。嗜盐生物群落中存在的细菌菌株为 Ochrobactrum、Marinobacter、Bacillus、Rhodococcus、Flavobacterium、Alicyclobacillus、Pseudomonas、Martelella、Stenotrophomonas、Xanthobacter 和 Microbacterium。在优化的 OL 为 1.62 g COD/L 时，ACMFC 中观察到 Ochrobactrum、Marinobacter 和 Bacillus 的高优势度。在中试规模 MFC 上进一步研究将为工业部门处理废水和相应的能源生产提供技术转让的途径。
Zotero 插件