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基于微生物诱导的酸盐沉的缩煤飞灰的生物修复

Rehemanjiang Wufuer¹, Jia Duo¹, Wenfeng Li¹

¹National Engineering Technology Research Center for Desert-Oasis Ecological Construction, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 818 South Beijing Road, Urumqi, 830011, China; Xin Jiang Key Laboratory of Environmental Pollution and Bioremediation, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China.

Journal of environmental radioactivity

|September 2, 2024

概括

这项研究使用细菌固化污染煤灰 (CFA),显著减少的流动性和增强的强度. 这种方法为管理危险的CFA废物提供了一个环保的解决方案.

科学领域:

环境科学环境科学
地质化学地质化学
微生物学微生物学

背景情况:

煤炭飞灰 (CFA) 是一个广泛的工业副产品.
来自中国新疆的CFA含有高水平的 (U),造成环境风险.
目前对受U污染的CFA的治疗方法有限.

研究的目的:

调查微生物诱导的石沉 (MICP) 在CFA中固定的潜力.
用一种新型细菌开发一种可持续的方法来治疗用U污染的CFA.
提高CFA的性能,以便在制中潜在使用.

主要方法:

隔离和应用一个化尿溶性细菌 (Halomonas sp. SBC20) 用于CFA生物凝固.
制造和压力强度测试的CFA.
使用五阶段顺序提取方法分析U分布.
通过柱体测试对U漏的评估.
使用FTIR和SEM-EDS进行微结构变化的表征.

主要成果:

生物水泥化显著增加了CFA的压力强度.
的流动性减少,可交换的U减少,碳酸结合的U增加.
漏试验显示,经过处理的CFA中的U释放量大大减少.
FTIR和SEM-EDX证实了石沉和U纳入碳酸盐矩阵.

结论:

哈洛蒙纳斯 sp. 的一种. 通过MICP,SBC20通过CFA有效地固定.
生物水泥增强了CFA的强度,并减少了与U污染相关的环境风险.
这项技术为全球的U污染CFA治疗提供了经济有效的解决方案.

关键词:

生物水泥化是一种生物水泥化.压力强度的压力强度是什么泄漏试验泄漏试验泄漏试验污染污染污染

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