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本地微藻和Bacillus XZM通过形成生物土壤皮层来修复受污染的土壤

Qing Mao¹, Xi Xie², Diego A Pinzon-Nuñez³

¹Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China.

Journal of environmental management

|August 30, 2023

概括

生物土壤皮 (BSCs) 与莱普托林格比亚和细菌菌共同注射,有效地修复了被污染的土壤. 这种方法增强了土壤的特性,并通过微生物细胞外聚合物物质使固定不动.

科学领域:

环境微生物学环境微生物学
土壤科学土壤科学
生物修复是一种生物修复.

背景情况:

生物土壤地 (BSCs) 对于在采矿区中固定金属化物至关重要.
驱动BSC形成的特定微生物及其对 (As) 污染土壤的影响尚未完全理解.

研究的目的:

研究特定微生物在形成BSC中的作用.
评估这些BSC在修复As污染土壤中的有效性.

主要方法:

用Chlorella thermophila SM01和Leptolyngbya sp.注射A-受污染的土壤,以此进行注射. XZMQ,和细菌XZM. 这是一个很好的方法.
现场培养实验 (45天) 观察BSC的形成.
分析土壤属性 (pH,EC,密度,含水量) 和酶活性 (酸酶,酸酸酶,糖酶,尿酸酶).
使用3D-EEM,FTIR和XRD对细胞外聚合物 (EPS) 进行表征,以了解AAS固定机制.

主要成果:

同时注射Leptolyngbya sp. 的疫苗. XZMQ和Bacillus XZM有效地形成了BSC,改善了土壤pH,水含量和酶活动,同时降低了EC和密度.
BSCs产生了大量的EPS,增强了托,氨酸,酸和酸的含量.
EPS成分,特别是具有-NH2和-COOH组的托芬残留物,以及BSC中的铁氧化物,通过复合和吸附促进了As的固定.

结论:

同时注射Leptolyngbya sp. 的疫苗. XZMQ和Bacillus XZM为构建BSC提供了一种新的方法.
这些BSC显著提高了土壤质量,并在受污染的采矿区固定了.
这种方法为污染土壤的生物修复提供了一个创新的策略.

关键词:

污染的土壤被污染了.细菌细菌是一种细菌.生物土壤地生物土壤地细胞外聚合物质是细胞外的聚合物质.微藻类是一种微藻类.

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