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辅助电场对肥料堆肥过程中重金属被动化的影响
Xiang Li1, Shengwei Wang1, Silan Zhao1
1School of Environment, Beijing Normal University, Beijing 100875, China.
The Science of the total environment
|July 31, 2023
概括
电场辅助的堆肥显著减少了牲畜便和污泥中的生物可用重金属. 这种创新方法稳定重金属,减轻与堆肥利用相关的环境和健康风险.
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:
- 堆肥对于畜牧肥料和污泥管理至关重要.
- 堆肥中的重金属对环境和健康构成风险.
- 需要有效的处理方法来降低重金属的生物可用性.
研究的目的:
- 调查电场辅助堆肥对重金属变化的影响.
- 为了确定影响堆肥过程中重金属转变的因素.
- 评估电场在减轻堆肥中的重金属风险方面的潜力.
主要方法:
- 通过应用电场来堆肥牲畜便和污泥.
- 对生物可用重金属度 (Mn, Zn, Cu, Ni, Cd) 的分析.
- 斯皮尔曼对环境因素的相关性分析.
- 微生物社区分析 (识别耐金属细菌).
主要成果:
- 电场显著减少了可生物利用的重金属 (Mn, Zn, Cu, Ni, Cd) 的61.7%至83.7%.
- 重金属被转化为更稳定的,少有毒的形式.
- 温度,物质和有机物质的变化是影响金属形式的关键因素.
- 耐金属细菌的丰富性 (伪,细菌) 显著增加.
结论:
- 电场辅助的堆肥有效降低重金属的生物可用性和毒性.
- 这种方法提高了利用堆肥的安全性.
- 这个过程受到环境因素和微生物社区转移的影响.
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