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由蒸发驱动的界面重组会诱导废物生物质的高效甲生成

Ying Xu¹, Haoyu Liu², Hui Geng²

¹State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.

|March 9, 2024

概括

废物污泥的水蒸发重组通过改善质量转移和微生物活动来增强甲基生成. 这一过程显著提高了甲的产生,并有利于可持续的生物能源回收.

科学领域:

环境科学环境科学
生物技术是生物技术.
可持续能源可持续能源

背景情况:

废物生物质 (WB) 的甲基生成提供了可持续发展,减少污染和生物能源回收.
在WB中复杂的固体-液体接口,特别是废弃活性污泥,阻碍了甲基生成的效率.
废弃物活性污泥是一种代表性的,复杂的,生物降解性差的WB类型.

研究的目的:

调查水蒸发驱动的界面重组在污泥甲生成效率中的作用.
了解污泥重组如何影响质量转移,微生物联盟和酶活性.
通过界面重组阐明增强甲生产的机制.

主要方法:

控制水蒸发以诱导污泥界面重组.
分析污泥的物理特性 (表面粗,孔隙结构,毛细血管力).
稳定同位素追踪和元基因组分析以追踪代谢途径和微生物群落.
测量甲生成率和关键酶活动.

主要成果:

非自由水蒸发重组污泥,增加表面粗,粘附和毛细血管力.
重组增强了固体-液体界面相互作用和电子转移效率 (P < 0.05).
甲原体协会 (Clostridia,Methanosarcina) 显著增加,与关键酶活动一起.
甲产量增加了147% (P<0.001),增强了二氧化碳减排甲生成 (+65.2%).

结论:

水蒸发驱动的界面重组对于增强污泥甲基生成至关重要.
该过程促进了质量转移和质子合电子转移 (PCET),涉及水分子在甲形成.
这种方法提供了一种调节复杂基质无氧生物转化以改善生物能回收的方法.

关键词:

生物降解性生物降解性接口属性接口属性接口属性甲生产甲生产湿度的分布湿度的分布污水污泥的污水污泥是污水中的污泥.

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