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[a]二烯的生物降解和吸附由真菌-细菌共同培养

Lei Xiao¹, Xianghan Zhao², Jinghua Yao²

¹Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; Mechano Chemistry Research Institute, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.

Ecotoxicology and environmental safety

|July 31, 2024

概括

这项研究探讨了由真菌和细菌去除的[a]烯 (BaP). 混合微生物培养实现了76.12%的去除,真菌吸附BaP,细菌降解它,提供了对生物修复策略的见解.

科学领域:

环境微生物学环境微生物学
生物修复是一种生物修复.
多环芳香碳化合物 (PAHs) 是一种多环芳香碳化合物.

背景情况:

甲 (BaP) 是一种持久性环境污染物.
微生物群落,包括真菌 (Ascomycota) 和细菌 (Bacillus),是污染物降解的关键参与者.
了解生物吸收和生物降解的综合作用对于有效的BaP去除至关重要.

研究的目的:

调查BaP生物降解和BaCillus和Ascomycota生物吸附的关系和动力学.
在混合微生物共同培养下分析BaP代谢物.
评估真菌和细菌对BaP去除的协同效应.

主要方法:

在BaP去除的同时培养Bacillus和Ascomycota.
量化菌对BaP的吸附和细菌的降解.
使用先进的表征技术分析BaP代谢物.
在吸附和降解过程中应用动态模型 (一级和伪二级).

主要成果:

BaP的去除通过生物吸收和生物降解发生.
菌显示出显著的BaP吸附 (38.14%AE),而细菌在降解 (56.13%DE) 中表现出色.
混合微生物共同培养在15天内实现了76.12%的BaP去除效率.
吸附和降解动力学分别遵循伪二阶和第一阶模型.

结论:

菌类和细菌的协同作用提高了BaP去除效率.
生物吸收在早期阶段占主导地位,其次是生物降解.
这些发现为设计用于BaP生物修复的微生物群落提供了理论指导.

关键词:

子[a]二烯是一种二烯.生物降解生物降解生物吸收生物吸收运动学运动学微生物共同培养是一种微生物共同培养.

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