当前位置: X-MOL 学术J. Water Process. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Performance of UASB reactor treating waste activated sludge: Effect of electro-chemical disintegration on the anaerobic microbial population structure and abundance
Journal of Water Process Engineering ( IF 6.3 ) Pub Date : 2022-08-02 , DOI: 10.1016/j.jwpe.2022.103020
Emna Feki , Fatma Karray , Najla Mhiri , Audrey Battimelli , Sami Sayadi , Sonia Khoufi

The electro-Fenton (EF) disintegration using iron electrodes was performed for the pretreatment of waste activated sludge (WAS). The effect of this electro-chemical pretreatment on anaerobic digestion (AD) performance and microbial population structure was studied. An improvement of biodegradability and bioaccessibility of organic matter was demonstrated. AD of pretreated WAS in an up-flow anaerobic sludge blanket reactor (UASB) resulted to an increase of biogas production by 60 % compared to control reactor without disintegration. PCR-DGGE and real-time qPCR analyses showed that the high abundance of bacteria and the coexistence of Coprothermobacter in the UASB digestate fed with disintegrated sample established a stable bacterial association which is in line with the AD performance. Besides, the increased number of methanogens along the process allowed the improvement of methane production in comparison to control reactor.



中文翻译:

UASB反应器处理废弃活性污泥的性能:电化学分解对厌氧微生物种群结构和丰度的影响

使用铁电极进行电芬顿(EF)分解用于废活性污泥(WAS)的预处理。研究了这种电化学预处理对厌氧消化 (AD) 性能和微生物种群结构的影响。证明了有机物质的生物降解性和生物可及性的改进。与未分解的对照反应器相比,在上流式厌氧污泥层反应器 (UASB) 中预处理 WAS 的 AD 导致沼气产量增加 60%。PCR-DGGE 和实时 qPCR 分析表明,在用崩解样品喂养的 UASB 消化物中细菌的高丰度和 Coprothermobacter 的共存建立了稳定的细菌关联,这与 AD 性能一致。除了,

更新日期:2022-08-03
down
wechat
bug