疏水生物炭改性垃圾填埋场土壤覆盖对甲氧化的影响
Qiuhong Li1,2,3, Meiyan Xing4, Bin Dong2,4
1College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, China.
Environmental management
|November 8, 2023
概括
疏水性生物炭显著提高了垃圾填埋场土壤覆盖率.
科学领域:
- 环境科学 环境科学
- 地质技术工程 地质技术工程
- 土壤科学 土壤科学
背景情况:
- 垃圾填埋场覆盖土壤对于减轻甲 (CH4) 排放至关重要.
- 生物炭的结合减少了CH4排放,但对疏水生物炭的影响不太了解.
研究的目的:
- 评估垃圾填埋场覆盖土壤的CH4去除效率,这些土壤是用常规生物炭 (RB) 和疏水生物炭 (RH) 修改的.
- 为了确定CH4降解在生物炭改性垃圾填埋场覆盖土壤中的最佳条件.
主要方法:
- 使用填埋场覆盖土壤列修改RB和RH的实验研究.
- 在不同的CH4流入度 (25-35%),流入速率 (10-20毫升/分钟) 和温度 (20-40°C) 下进行测试.
主要成果:
- 疏水生物炭 (RH) 始终显示出比普通生物炭 (RB) 更高的CH4去除效率.
- 最佳的CH4降解发生在35%的CH4度,10毫升/分钟的流入速度和~30°C时.
- RH实现了最大的CH4去除率为99.96%.
结论:
- 疏水生物炭修改改善了垃圾填埋地覆盖土壤的空气透性和疏水性.
- 疏水生物炭为减少垃圾填埋场CH4排放提供了一个有希望的替代方案.
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