摘要
近年来,聚乙烯塑料污染已经成为一个世界性的环境问题。由于其回收难度高、降解性较差,利用微生物对聚乙烯进行生物降解已经成为主要的降解方法之一。由于聚乙烯可以作为微生物群落生存的唯一碳源,微生物可以在聚乙烯表面形成生物膜或者一个被称作塑料球的区域,两者相互作用产生酸或酶降解聚乙烯。微生物对聚乙烯的降解程度受到聚合物的微观结构、表面特性、相对分子质量及相对分子质量分布等因素的影响。目前,在已有研究的基础上,总结了聚乙烯生物降解的研究进展,概述了聚乙烯生物降解机理及影响因素,最后,综述了生物降解聚乙烯的主要表征方法。
Over the past few decades,polyethylene plastic pollution has become a worldwide pollution problem.Because of its high recycling difficulty and poor degradability,the use of microorganisms to biodegrade polyethylene has become the main degradation method among several degradation methods.Polyethylene can serve as the only carbon source for the survival of microbial communities.Microorganisms can form a biofilm or an area called a plastic sphere on the surface of polyethylene,and they interact to produce acids or enzymes that degrade the polyethylene.The degradation of polyethylene by microorganisms depends on the microstructure,surface properties,molecular weight and molecular weight distribution of the polymer.On the basis of previous studies,the research progress of polyethylene biodegradation is summarized,the mechanism and influencing factors of polyethylene biodegradation are summarized,and finally the main characterization methods of biodegradable polyethylene are summarized.
作者
吴慧
卢亚红
刘强
孙文潇
马瑜浩
张宇鹏
贺丹丹
张宏
WU Hui;LU Yahong;LIU Qiang;SUN Wenxiao;MA Yuhao;ZHANG Yupeng;HE Dandan;ZHANG Hong(Key Laboratory of Environment-Friendly Composite Materials,State Ethnic Affairs Commission,School of Chemical Engineering,Northwest Minzu University,Lanzhou,Gansu 730030,China)
出处
《塑料》
CAS
CSCD
北大核心
2023年第2期56-62,88,共8页
Plastics
基金
市政污泥生物质炭功能化及其在土壤改良中的应用技术示范(20YF8GA044)
废旧农膜回收利用产业技术体系建设项目(甘农环(64)号)。
关键词
聚乙烯
生物降解
微生物
降解机理
影响因素
表征方式
polyethylene
biodegradation
microorganism
degradation mechanism
influencing factorsr
representation mode