天然血作为低成本的辅助材料,用于通过现场微生物群体改善土壤修复
Chengbin Zhang1, Qijun Wang1, Runjie Qin1
1The Key Laboratory of Mineral Resources in Western China (Gansu Province), School of Earth Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China.
概括
天然血在生物电化学系统中显著提高了土壤修复效率. 这种矿物质提高了土壤微生物燃料电池的性能和有机污染物去除率,为环境清洁提供了有希望的解决方案.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 电化学 电化学 电化学
背景情况:
- 微生物-矿物相互作用显示有机污染物修复的潜力.
- 目前的方法面临的局限性是由于长时间的维修周期和较低的修复率.
研究的目的:
- 研究天然血作为土壤生物电化学修复系统中的辅助材料的有效性.
- 为了优化血颗粒大小和度,提高土壤修复.
主要方法:
- 使用土壤微生物燃料电池 (SMFC) 系统,具有不同的天然血颗粒大小 (2.0毫米) 和度 (0-20%).
- 在7天的时间内测量系统功率密度和去除率.
- 分析了血对土壤多孔性,导电性和电子受体的影响.
主要成果:
- 使用2.0毫米血的SMFC系统实现了2.889mW/m2的功率密度,比控制系统高2.7倍.
- 最佳的血度 (20%) 将功率密度从1.068增加到2.467mW/m2.
- 在最佳条件下 (20%血,2.0毫米),去除在7天内达到近99%,比对照增加了1.9倍.
结论:
- 黑马添加增强了土壤的多孔性和导电性,促进了微生物修复.
- 这种矿物增加了电子受体的可用性,提高了SMFC的性能.
- 天然血是用于净化土壤有机污染物的经济有效的辅助材料,促进了对微生物-矿物相互作用的理解.
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