微塑料
化学
厌氧消化
邻苯二甲酸盐
环境化学
污水污泥
污水
食品科学
制浆造纸工业
废物管理
甲烷
有机化学
工程类
作者
Pan Wang,Yi Guo,Miao Yu,Shohei Riya,Yi Zheng,Ling Ren
标识
DOI:10.1016/j.bej.2023.109012
摘要
This research investigated the impact of polyethylene terephthalate (PET) microplastics on the anaerobic co-digestion of sewage sludge and food waste. The performance of anaerobic digester was investigated with different particle sizes (30 µm and 250 µm) PET at concentrations of 0, 0.45, 1.35, and 2.70 mg/g total solid (TS). Results suggested that the CH4 production at 2.70 mg/g TS level decreased by 21.63% (30 µm) and 15.87% (250 µm) compared with the control group, respectively. PET microplastics exerted negative influence through leaching toxic diisobutyl phthalate (DIBP) and dibutyl phthalate (DBP). Microbial community analysis and redundancy analysis showed that DIBP and DBP reduced the abundances of key hydrolysis bacteria (Bacteroides vadin HA17) and acidification bacteria (Clostridium and Sphaerochaeta). Structural equation model analysis showed that DBP and DIBP were the key factors that reduced the methane production, and they had stronger impact on daily methane production in the 30 µm group compared with the 250 µm group.
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