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磁性卢法海绵生物炭在表面和地下沉积物中促进微生物物种间合作,增强PAH生物降解

Luming Wang¹, Zaisheng Yan², Haifeng Yan¹

¹State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China; Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, 210096, China.

Environmental pollution (Barking, Essex : 1987)

|July 13, 2023

概括

磁性生物炭在900天内有效地修复了多环芳 (PAH) 污染的沉积物. 磁性卢法海绵生物炭 (MagLsBC) 促进了微生物活动,在表面和地下层中增强了PAH生物降解.

科学领域:

环境科学环境科学
微生物学微生物学
生物修复是一种生物修复.

背景情况:

多环芳 (PAH) 是污染沉积物中的持久有机污染物.
对PAHs的长期生物修复策略需要了解微生物社区动态和分层.
磁性生物炭用于沉积物修复的应用正在出现,但缺乏长期微生物组装数据.

研究的目的:

研究磁性生物炭对分层沉积物中PAH生物降解的长期 (900天) 影响.
分析微生物社区的组合和相互作用,以应对不同的磁性材料.
评估磁触细菌和本地降解剂在PAH去除中的作用.

主要方法:

磁性卢法海绵生物炭 (MagLsBC),磁性铁氧化物 (MagOx) 和磁性子活性炭 (MagCoAC) 应用于受PAH污染的沉积物.
在900天内监测表面和地下沉积层中的PAH生物降解.
使用分子技术分析微生物社区结构,丰富性和网络相互作用.

主要成果:

在表面和地下沉积物中,MagLsBC显著增强了PAH生物降解 (p < 0.05).
处理MagOx和MagCoAC只改善了表面沉积物中的PAH生物降解.
磁性战术细菌 (Magnetococcus) 在MagLsBC的表面沉积物中占主导地位,而土著PAH降解剂在地下沉积物中丰富.
与其他治疗方法相比,MagLsBC治疗导致微生物网络不那么复杂和更紧密.

结论:

磁性卢法海绵生物炭是一种有前途的材料,用于长期的PAH污染沉积物的分层生物修复.
磁触细菌和本地降解剂之间的合作,由MagLsBC促进,增强了长距离电子传输和PAH降解.
了解微生物组合和相互作用对于优化使用磁性生物炭的生物修复策略至关重要.

关键词:

合作合作合作磁性卢法海绵生物碳水化合物这是一种磁性菌 (magnetococcus).微生物社区的微生物社区.通过消除PAH来消除PAH.

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