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Updated: Sep 11, 2025

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在光辅助无氧消化中CdS介导的电子动态:通过预处理同时封存和富含甲

Baowei Zhang¹, Xiang Tang², Linrui Zhong¹

¹College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.

Journal of hazardous materials

|August 17, 2025

概括

这项研究通过光和的预处理增强了加污泥的无氧消化 (AD). 这种新方法显著提高了甲产量,有助于可持续的污泥管理和资源回收.

科学领域:

环境科学环境科学
生物技术是生物技术.
化学工程是化学工程的重要组成部分.

背景情况:

废物活性污泥 (WAS) 中的 (Cd) 构成环境风险,并抑制无氧消化 (AD).
硫化 (CdS) 显示了光刺激AD增强的潜力,但在污泥中稳定具有挑战性.
有效地管理重金属污泥对于环境安全和资源回收至关重要.

研究的目的:

开发一种新的策略,用于管理含有Cd的WAS,在性预处理后使用光辅助AD.
研究Cd同时稳定为CdS,并改善资源回收.
在复杂的污泥矩阵中优化AD性能和甲产量.

主要方法:

WAS的性预处理以破坏细胞外聚合物质.
照明辅助的无氧消化 (AD) 过程.
电化学分析和metatranscriptomic测序以评估电子转移和微生物社区的变化.

主要成果:

甲产量达到111.0 ± 2.2 L CH4/kg VSS,明显高于传统的AD (27.1 L CH4/kg VSS) 和预处理的AD (46.4 L CH4/kg VSS).
性预处理促进了CdS颗粒和微生物之间的直接接触,增强了甲性电子捕获.
通过电化学和微生物群落中高调节的电子传递通路证实了增强的电子传递.

结论:

在性预处理后提出的光辅助AD是Cd含WAS处理的创新和有效框架.
这种方法提高了AD性能,稳定了,并促进了可持续的污泥资源利用.
该研究为处理含重金属的污泥和增强生物气生产提供了有价值的见解.

关键词:

无氧消化消化无氧消化硫化和二氧化的使用情况电子转移是电子的转移.微生物半导体生物混合体废弃的活性污泥废弃物

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