微塑料
流出物
废水
细菌
污水处理
生物膜
生物
致病菌
微生物学
污水
环境科学
环境工程
生态学
遗传学
作者
Antonina Kruglova,Barbara Muñoz-Palazón,Alejandro González‐Martínez,Anna Mikola,Riku Vahala,Julia Talvitie
标识
DOI:10.1016/j.envpol.2022.120316
摘要
Microplastics (MPs) provide a stable and protective habitat for diverse wastewater bacteria, including pathogenic and antibiotic-resistant species. Therefore, MPs may potentially transport these bacteria through wastewater treatment steps to the environment and far distances. This study investigated bacterial communities of MP-associated bacteria from different stages of municipal wastewater treatment processes to evaluate the potential negative effect of these biofilms on the environment. The results showed a high diversity of bacteria that were strongly attached to MPs. After all treatment steps, the core bacterial groups remained attached to MPs and escaped from the wastewater treatment plant with effluent water. Several pathogenic bacteria were identified in MP samples from all treatment steps, and most of them were found in effluent water. These data provide new insights into the possible impacts of wastewater-derived MPs on the environment. MP-associated biofilms were proved to be important sources of pathogens and antibiotic-resistant genes in natural waters.
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