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通过刺激本土微生物来修复六价污染的土壤:优化,社区继承和适用性

Xusheng Zheng¹, Jingjing Tong², Shufang Zhou¹

¹Department of Environmental Science & Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.

Journal of environmental management

|November 16, 2024

概括

本土微生物有效地利用乳酸,铁和湿酸修复了六价 [Cr(VI] 污染的土壤. 这一策略增强了微生物活动,并在不同的土壤环境中显著降低了Cr (VI) 水平.

科学领域:

环境科学环境科学
微生物学微生物学
土壤科学土壤科学

背景情况:

六价 (Cr) 的污染给环境带来了重大风险.
微生物修复是一种可持续的Cr(VI) 土壤清洁方法.
在将外源微生物适应各种污染土壤条件方面存在挑战.

研究的目的:

通过使用土著微生物,研究污染的土壤的修复.
为了优化乳酸,铁和湿酸的应用,以增强微生物活动.
评估这种修复战略在不同类型的土壤和污染水平的有效性.

主要方法:

利用本土的降铁和Cr (VI) 降解细菌进行土壤修复.
采用了Box-Behnken设计,以优化刺激剂剂量 (乳酸,铁,酸).
监控的Cr (VI) 清除率和微生物群落丰度在处理后的变化.

主要成果:

通过使用优化刺激剂剂量,从土壤中获得71.61%的Cr (VI) 清除率,含量为2234.92 mg/kg的Cr (VI).
增加了关键细菌的总丰度 (降低铁和降低CrVI) 从9.78%增加到64.64%.
在初始度超过2000 mg/kg时,也证明了高的Cr6去除效率 (高达89.49%) .

结论:

由乳酸,铁和湿酸刺激的本土微生物修复是一种高度有效的策略.
优化刺激剂的应用显著提高了土壤微生物的活性,以减少Cr.
这种方法为广泛的Cr6土壤污染提供了一个有希望的,环保的解决方案.

关键词:

生物刺激是生物刺激.盒子-benhnken设计的设计.减少Cr (VI) 的细菌.减少铁的细菌减少铁的细菌微生物社区的微生物社区.

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