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烧解沉积物加速电子转移,并调节罗达胺B生物降解

Lean Zhou¹, Yongliang Wu¹, Qian Jiang²

¹Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province/School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China.

The Science of the total environment

|September 22, 2023

概括

烧解沉积物增强了微生物电化学系统 (MES) 的污染去除作用. 在600°C下进行热解的沉积物显示出最佳的电子转移和污染物降解,提供了可持续的废物利用策略.

科学领域:

环境科学环境科学
电化学电化学电化学
微生物学微生物学

背景情况:

电子转移效率对于环境污染物的生物降解至关重要.
外源电子穿器可以改善微生物电化学系统 (MES) 中的电子传输.

研究的目的:

调查沉积物热解温度对MESs电子转移和罗达胺B (RhB) 除去的影响.
探索烧化沉积物作为污染物降解的电子媒介的潜力.

主要方法:

在不同温度下 (300°C,600°C,900°C) 进行沉积物热解.
在MES中评估电子转移特性和发电.
对RhB去除效率的评估.
微生物群体分析和代谢途径调查.

主要成果:

在300°C (PS300) 和600°C (PS600) 烧解的沉积物增强了16%的发电量,而PS900则抑制了它.
与PS300相比,PS600的RhB去除效率更高,这归因于电活性细菌 (EAB) 和毒性降解细菌 (TDB) 的大量增加.
PS600上调氨基合成和三碳酸循环,增强细胞内代谢,而PS300显示出更活跃的细胞代谢,可能是由于RhB毒性.

结论:

热溶性沉积物,特别是在600°C时,有效调解电子传输,并促进MES中的污染物去除.
这种方法提供了一种技术经济上可行的方法,用于利用低碳固体废物进行环境整治.
优化热解温度和了解微生物社区动态是有效降解污染物的关键.

关键词:

生物降解生物降解电子转移是指电子的转移.代谢途径代谢途径化泥的化过程罗达胺 B 类型的罗达胺

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