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解锁阳极和阴极区域在电场辅助有氧堆肥过程中对N₂O排放的潜在差异和影响

Huayuan Shangguan¹, Chang Shen², Keren Ding³

¹Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China; University of Chinese Academy of Sciences, Beijing 100049, China.

Bioresource technology

|November 27, 2024

概括

电场辅助有氧化堆肥 (EAC) 显著减少氧化 (N2O) 排放,特别是在阴极区域. 这是由于改变了物理化学特性和循环,为优化EAC技术提供了洞察力.

科学领域:

环境科学环境科学
土壤科学土壤科学
生物技术是生物技术.

背景情况:

电场辅助有氧堆肥 (EAC) 是减少温室气体排放的一种有希望的方法.
氧化 (N₂O) 是一种强大的温室气体,经常在堆肥过程中排放.
了解EAC系统内N2O排放的空间变化对于优化至关重要.

研究的目的:

在EAC期间调查阳极和阴极区域之间的N₂O排放的差异.
探索物理化学性质和微生物群落对不同电极区域N₂O减少的影响.
在EAC中确定调节N2O排放的关键因素.

主要方法:

使用EAC进行了堆肥实验,在阳极区域 (AR) 和阴极区域 (CR) 进行了测量.
分析了N₂O排放,物理化学特性和循环功能基因.
部分最小平方路径建模 (PLS-PM) 用于分析监管关系.

主要成果:

阴极区域 (CR) 的累积N₂O排放量比阳极区域 (AR) 低32.77%.
CR表现出有利于N₂O减少的物理化学特性.
PLS-PM揭示了N循环功能基因和含N的物质在AR中与N₂O正相关,但在CR中与N₂O负相关.

结论:

在EAC的电极区域显著影响N₂O排放.
由于有利的条件和微生物调节,阴极区域在减轻N₂O排放方面更有效.
针对不同电极区域的特定N循环路径可以优化EAC以减少N₂O输出.

关键词:

电场是一个电场.功能性基因是指功能性的基因.没有减轻影响的减轻措施.物理化学特性物理化学特性空间上的差异.

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