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含低密度聚乙烯 (LDPE) 的塑料珠子的降解通过序列光解,水解和细菌分离物

Devjani Banerjee^1,2, Chandani Patel³, Kajal Patel³

¹Ashok and Rita Patel Institute Of Integrated Study and Research in Biotechnology & Allied Sciences (ARIBAS), New V V Nagar, Anand, India. devjani.banerjee@gsfcuniversity.ac.in.

Bulletin of environmental contamination and toxicology

|February 22, 2024

概括

本研究探讨了使用特定细菌的低密度聚乙烯 (LDPE) 塑料珠的生物降解. 微型白杆菌和菌菌显著降解LDPE,降解由粉增强.

科学领域:

环境科学环境科学
微生物学微生物学
聚合物科学聚合物科学

背景情况:

塑料污染,特别是来自像低密度聚乙烯 (LDPE) 这样的耐用材料的塑料污染,是一个重大的全球环境挑战.
塑料的自然降解非常缓慢,持续了一个多世纪,导致生态系统的广泛污染.
了解生物降解途径和识别有效的微生物剂对于开发可持续的塑料废物管理策略至关重要.

研究的目的:

研究在低密度聚乙烯 (LDPE) 塑料珠上选择细菌分离物的生物降解效率.
在实验室和现场条件下识别能够降解LDPE的细菌物种.
评估粉作为辅助基质对LDPE生物降解速度的影响.

主要方法:

使用16S rRNA基因测序从城市垃圾处理场分离和识别细菌菌株.
在受控的实验室和现场条件下,LDPE塑料珠暴露于细菌联合体 (Micrococcus luteus,Bacillus pumilus和Pseudomonas aeruginosa作为阳性对照).
通过60天后的体重减轻测量来评估生物降解,有或没有添加10%的粉.

主要成果:

经过60天的用Micrococcus luteus和Bacillus pumilus治疗后,LDPE珠子的重量显著减少.
通过16S rRNA基因测序,细菌分离物被确定为Micrococcus luteus和bacillus pumilus.
在10%的粉存在时,LDPE降解的速度显著加快.

结论:

微球菌 (Micrococcus luteus) 和菌 (Bacillus pumilus) 显示出作为有效的生物降解LDPE塑料剂的潜力.
生物降解,光解和水解的综合作用有助于塑料的降解.
粉可以显著提高LDPE的微生物降解率,为生物修复策略提供了一个有希望的途径.

关键词:

生物降解生物降解美国的FTIR是FTIR.在 LDPE 珠子上.塑料污染问题塑料污染问题这就是SEM SEM.

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