零价铁
十溴二苯醚
环境化学
多溴联苯醚
环境修复
微塑料
化学
降级(电信)
污染
污染物
声化学
特纳克斯
化学工程
吸附
阻燃剂
有机化学
生态学
电信
计算机科学
工程类
生物
作者
Xiaoxuan Zhang,Ran Chen,Zhenhui Li,Junxia Yu,Jinyi Chen,Yuanyuan Zhang,Jin-Hong Chen,Qianqian Yu,Xinhong Qiu
标识
DOI:10.1016/j.scitotenv.2023.163233
摘要
The microplastics (MPs) existed in the environment widely has resulted in novel thinking about in-situ remediation techniques, such as nano-zero-valent iron (nZVI) and sulfided nZVI (S-nZVI), which were often compromised by various environmental factors. In this study, three common MPs such as polyvinyl chloride (PVC), polystyrene (PS), and polypropylene (PP) in soil were found to inhibit the degradation rate of decabromodiphenyl ether (BDE209) by nZVI and S-nZVI to different degrees due to MPs inhibiting of electron transfer which is the main way to degrade BDE209. The inhibition strength was related to its impedance (Z) and electron-accepting (EAC)/-donating capacity (EDC). Based on the explanation of the inhibition mechanism, the reason for different aging degrees of nZVI and S-nZVI in different MPs was illustrated, especially in PVC systems. Furthermore, the aging of reacted MPs, functionalization and fragmentation in particular, indicated that they were involved in the degradation process. Moreover, this work provided new insights into the field application of nZVI-based materials for removing persistent organic pollutants (POPs).
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