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高密度聚乙烯 (HDPE) 的生物降解,使用从新鲜牛中分离出来的细菌菌株

Boutheina Trad¹, Zidane Branes², Ali Abdelatif Betouil³

¹Laboratory of Biogeochemical and Ecological Analysis of Aquatic Environments, Department of Biochemistry, Faculty of Sciences, Badji Mokhtar - Annaba University, P.O. Box 12, 23000, Annaba, Algeria. boutheina.trad@univ-annaba.dz.

|October 28, 2025

概括

两个细菌菌株,Brevibacillus parabrevis EVB 2和Bacillus velezensis EVB8,可以有效地降解高密度聚乙烯 (HDPE). 这种微生物降解为塑料废物管理提供了一个有希望的可持续解决方案.

科学领域:

环境微生物学环境微生物学
生物技术是生物技术.
材料科学材料科学材料科学

背景情况:

高密度聚乙烯 (HDPE) 由于其持久性和广泛使用,造成了重大环境挑战.
使用微生物剂进行生物修复为塑料废物管理提供了一个可持续的替代方案.
牛便样本含有强大的微生物群落,能够降解塑料.

研究的目的:

研究Brevibacillus parabrevis EVB 2和Bacillus velezensis EVB8在HDPE生物降解方面的潜力.
量化HDPE降解的程度,并分析这些细菌引起的结构变化.
评估这些细菌菌株作为可持续塑料废物管理的代理物的效率.

主要方法:

从牛便样本中分离和识别细菌菌株.
在HDPE薄膜降解试验中,测量了40天内的体重减轻,二氧化碳排放和pH值变化.
使用SEM,ATR-FTIR,XRD和GC-MS进行结构和化学分析.

主要成果:

布雷维细菌parabrevis EVB 2和Bacillus velezensis EVB8显著减少了HDPE薄膜的重量,分别减少了3.78%和1.84%.
EVB2的降解效率更高,体现出更大的减重和二氧化碳排放 (104.42毫克).
SEM,FTIR,XRD和GC-MS分析证实了HDPE薄膜的表面变化和化学变化,表明生物降解.

结论:

该研究表明,Brevibacillus parabrevis EVB 2和Bacillus velezensis EVB8能够在没有预处理的情况下生物降解HDPE.
与现有方法相比,这些细菌菌株为HDPE生物修复提供了一种高效和加速的方法.
这些发现支持这些微生物剂用于高密度聚乙烯废物的有效和可持续管理.

关键词:

这种病原体是Bacillus velezensis.布雷维巴西勒斯 (Brevibacillus parabrevis) 是一种类型的细菌.牛分离的牛分离物在HDPE生物降解过程中积聚HDPE废物的废弃物

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