硫酸盐的减少行为是为了应对压力合与垃圾填埋场内部温度的变化
Haomin Zhou1, Shuli Guo1, Cai Hui1
1Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Zhejiang Engineering Research Center of Non-ferrous Metal Waste Recycling, Zhejiang Gongshang University, Hangzhou, 310012, China.
Waste management (New York, N.Y.)
|October 8, 2023
概括
压力和温度显著抑制了从垃圾填埋场释放的硫化 (H2S) 和甲基 (MM). 由于这些条件,特定的减少硫酸盐细菌 (SRB) 的活性受到改变,影响了垃圾填埋场气体的管理.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 垃圾填埋气体含有硫化 (H2S) 和甲基 (MM),导致气味问题.
- 通过特定细菌减少硫酸盐是垃圾填埋场中H2S的主要来源.
- 了解压力和温度对这些过程的影响对于填埋场管理至关重要.
研究的目的:
- 在垃圾填埋场内的不同压力和温度条件下研究硫酸盐减少的行为.
- 在这些条件下确定影响H2S和MM释放的关键微生物参与者.
- 为有效的垃圾填埋气体控制策略提供科学基础.
主要方法:
- 在受控的压力和温度下对H2S和MM释放的实验研究.
- 使用分子技术分析微生物社区结构.
- 确定参与该过程的特定硫酸盐降解细菌 (SRB).
主要成果:
- H2S和MM释放在25°C和50°C压力下显著抑制.
- H2S和MM的度分别降至大气压的0.82%-1.30%和1.87%-4.32%.
- 温度改变了整体微生物群落,而压力选择性地抑制或诱导了特定的细菌,包括关键的SRB如Desulfosporosinus,Desulfitibacter和Dethiobacter.
结论:
- 压力和温度是控制硫酸盐减少和垃圾填埋场相关气体排放的关键因素.
- 特定的SRB物种在不同的压力和温度条件下在硫酸盐减少中发挥着不同的作用.
- 这些发现为优化垃圾填埋场气体管理和气味控制技术提供了理论基础.
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