膜污染
膜
生物反应器
结垢
化学
膜生物反应器
化学工程
微生物燃料电池
开路电压
色谱法
电极
生物化学
电压
有机化学
量子力学
阳极
物理
工程类
物理化学
作者
Yanqing Liu,Jingran Zhang,Xian Chen,Takashi Sakamaki,Xianning Li
标识
DOI:10.1016/j.biortech.2023.128760
摘要
To remove membrane fouling, a bio-electrochemical system that can generate a micro-electric field and micro-current was constructed. After 11 days of operation, the trans-membrane pressure difference of membrane modules in the open- and closed-circuit groups increased by 35.8 kPa and 6.2 kPa, respectively. The concentrations of total polysaccharide and protein in the open-circuit group were 1.8 and 1.1 times higher than those in the closed-circuit group, respectively. In addition, X-ray photoelectron spectroscopy and thermogravimetric analysis showed that inorganic crystals such as calcium carbonate were present on the membrane surface, and the concentration of calcium ion in the control group was 14.7 times that of the experimental group. High-throughput sequencing demonstrated that the enrichment of some electroactive bacteria and other microorganisms has a positive effect on the control of membrane fouling. Therefore, this system can effectively alleviate membrane fouling of a bioreactor, by targeting the membrane foulants.
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