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硫细菌增强的微生物电化学脱

Sen Lin¹, Wentao Tang¹, Yihang Xiao²

¹Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China; Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau.

Bioresource technology

|November 29, 2023

概括

与异质无无 (HDI) 相比,自变无无 (ADI) 提高了42%的微生物电化学无化 (MED) 效率. 这项研究提供了一种改善MED绩效的新策略.

科学领域:

环境科学环境科学
微生物学微生物学
电化学电化学电化学

背景情况:

微生物电化学脱 (MED) 是由功能性微生物的丰富性和效率所限制的.
目前用无化污泥对MED系统进行注射的方法需要改进.

研究的目的:

为了比较自otrophic denitrifying inoculum (ADI) 与异otrophic denitrifying inoculum (HDI) 对MED的有效性.
确定不同的微生物途径和提高MED性能的策略.

主要方法:

用ADI和HDI接种的MED系统的比较.
分析电活性持续时间,脱效率和微生物群体组成.
研究生物体的代谢途径,包括多糖和蛋白质含量.

主要成果:

与HDI相比,ADI显示的电活性时间比HDI少50%.
ADI生物阴极实现了比HDI生物阴极高出42%的脱效率.
HDI生物阴极富含多糖,表明物种间电子转移,而ADI生物阴极富含蛋白质,表明硫细菌直接吸收电子.

结论:

自转型硫氧化脱剂为增强MED提供了一个可行的策略.
与HDI相比,ADI可以显著提高MED系统中的脱效率.
不同的微生物群落利用不同的途径来实现MED.

关键词:

生物电化学废水处理生物去除生物去除微生物的电化学脱.硫细菌是一种硫细菌.

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