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通过无氧消化污泥加强PCB的微生物脱,并丰富低丰度PCB脱剂

Zhen Han¹, Sijia Fei¹, Faqian Sun¹

¹College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China.

Journal of hazardous materials

|November 5, 2024

概括

无氧消化污泥 (ADS) 通过促进微生物脱,显著增强了多二 (PCB) 的生物修复. 这项研究表明,ADS的添加改善了PCB的去除,并丰富了环境清洁的关键细菌.

科学领域:

环境微生物学环境微生物学
生物修复技术生物修复技术
生物地质化学生物地质化学

背景情况:

多双 (PCB) 是持久性有机污染物,它们的生物修复通常受到慢无氧微生物脱率的限制.
无氧消化污泥 (ADS) 富含营养和微生物,具有提高生物修复过程的潜力.

研究的目的:

调查ADS对Aroclor 1260脱的影响,重点关注微生物社区动态和功能基因丰度.
探索利用四乙烯 (PCE) 和复苏促进因子 (Rpf) 丰富有机化物呼吸细菌 (OHRB).

主要方法:

将ADS (5g/L) 添加到受PCB污染的样本中.
微生物群落组成和功能基因丰富性的分析 (还原性脱基因酶基因,古老的16S rRNA).
使用PCE作为电子受体和连续稀释到灭绝与Rpf.B的OHRB的丰富.

主要成果:

添加ADS导致PCB的更广泛和更有效的脱,增强了甲和准的去除.
观察到脱细菌 (Dehalobium,Dehalobacter) 和其他微生物群的大量增加.
丰富OHRB和减少脱原酶基因的丰富性增加证实了微生物脱活动的增强.

结论:

ADS是一种有效的添加剂,可增强PCB的无氧微生物脱.
ADS促进了关键脱细菌和功能基因的生长,提高了生物修复效率.
该研究强调了Rpf在丰富和隔离OHRB的潜力,用于未来的生物修复应用.

关键词:

无氧消化污泥是一种无氧消化污泥.亚洛克1260的使用情况微生物还原性脱处理有机化物呼吸细菌的细菌.促进复苏的促进因素.

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