通过连续的无氧还原脱和有氧氧化,四博二A的完整生物降解
Guiping Liu1, Songmeng Liu1, Jie Yang1
1Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China.
Journal of hazardous materials
|April 7, 2024
概括
甲 (TBBPA) 可以通过两步微生物过程完全生物降解. 首先,无氧细菌将TBBPA转化为双A (BPA),然后有氧细菌降解BPA,为污染物清除提供可持续的解决方案.
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:
- 甲 (TBBPA) 是一种持久性阻燃剂和污染物.
- TBBPA通过无氧降解为双甲 (BPA),是一种内分泌干扰物.
- BPA通过有氧生物降解,但不通过无氧生物降解.
研究的目的:
- 为了研究TBBPA在无氧/有氧环境中的微生物降解.
- 为TBBPA及其代谢物BPA建立一个可持续的生物降解战略.
主要方法:
- 无氧微观宇宙被用来研究TBBPA的脱变为BPA,人类作为促进者.
- 使用沙子/土壤柱来实现完全的TBBPA生物降解.
- 该过程涉及TBBPA的无氧还原性脱化,随后由Sphingomonas sp.对BPA进行有氧氧化. 这种菌株是TTNP3.
主要成果:
- 鉴定出Dehalobacter物种是TBBPA脱的关键参与者.
- 在42天的时间里,95.11%的TBBPA在无氧条件下转化为BPA.
- 在用Sphingomonas sp.进行有氧治疗后. 在TTNP3菌株中,85.57%的BPA被降解.
- 空气和微生物殖民显著提高了有氧BPA降解率.
结论:
- 综合的无氧/有氧微生物战略使得TBBPA能够完全和可持续地生物降解.
- 这种方法为修复环境中的TBBPA和类似污染物提供了有价值的见解.
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