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在石油污染的松泥土的生物修复过程中评估利用效率:从元基因组学分析的见解

Yawen Ou¹, Manli Wu¹, Ying Yu¹

¹Key Laboratory of Environmental Engineering of Shaanxi Province, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an 710055, China.

Journal of hazardous materials

|August 16, 2024

概括

在石油污染土壤生物修复过程中,优化添加的方法至关重要. 136 mg N/kg的剂量被确定为最佳的石油碳化合物 (TPH) 整体修复,无论最初的TPH水平如何.

科学领域:

环境科学环境科学
土壤科学土壤科学
生物修复是一种生物修复.

背景情况:

总石油碳化合物 (TPH) 污染对环境构成风险.
添加是一种TPH生物修复的常见策略.
最佳的剂量及其在TPH降解中的效率尚未完全理解.

研究的目的:

为了确定TPH生物修复的最佳外源剂量.
为了评估不同TPH度的利用效率.
调查添加对土壤微生物群落和功能的影响.

主要方法:

使用NH4Cl在不同剂量的生物修复实验.
在污染的土壤中分析TPH度.
可用性效率 (NAE) 和极化因子可用性 (NPFA) 的计算.
土壤微生物群落的元基因组学分析.

主要成果:

可接受的外源含量范围在60至360毫克N/kg土壤之间.
对于TPH补救的最佳剂量是136毫克N/kg,无论TPH初始度 (8553和17090毫克/kg).
甲基因组分析表明,136 mg N/kg的能促进了微生物对TPH降解有益的代谢适应.

结论:

剂量为136 mg N/kg,是修复不同TPH水平的石油污染土壤的最佳剂量.
这种最佳剂量与农作物生长所需的相一致.
在最佳水平上添加可以恢复受污染的土壤中的生态功能.

关键词:

外源的是外源的.的接受性的接受性的转化过程中的.的利用效率提高了使用效率.受石油污染的土壤被污染了.

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