油菜
鼠李糖脂
环境修复
环境化学
多酚氧化酶
化学
环境科学
修正案
污染
污染物
杀虫剂
土壤污染
农学
芸苔属
细菌
生物
生态学
酶
铜绿假单胞菌
过氧化物酶
法学
有机化学
生物化学
遗传学
政治学
作者
Xuehao Zheng,Moses Akintayo Aborisade,Hui Wang,Peng He,Shan Lu,Na Cui,Songyuan Wang,Hongling Zhang,Hui Ding,Kebin Liu
出处
期刊:Chemosphere
[Elsevier]
日期:2020-10-01
卷期号:256: 127079-127079
被引量:40
标识
DOI:10.1016/j.chemosphere.2020.127079
摘要
Due to the ecological toxicity and environmental residues, how to remove the persistent organic pollutants (POPs), especially of polycyclic-aromatic-hydrocarbons (PAHs) and dichloro-diphenyl-trichloroethanes (DDTs), from agricultural soil has captured the attention of scholars for a long time. To develop an effective and low-cost in situ co-remediation technique, five independent but complementary treatments were used on an over-standard PAHs-DDTs co-contaminated soil in an agricultural greenhouse. Experimental results identified that the combination of microbe (Bacillus methylotrophicus) - plant (Brassica rapa) could remove rhamnolipid activated PAHs and DDTs effectively after enhanced by Staphylococcus pasteuri. Also, the Benzoapyrene and total DDTs residue in Brassica rapa was up to the standard of National (China) food safety. The lignin enhanced the removal of high-rings PAHs and p-p’ DDE but reduced soil microbial biomass carbon and soil enzymes activity (polyphenol oxidase, invertase and acid phosphatase). Pearson correlation analysis showed that polyphenol oxidase activity was significantly related to the PAHs/DDTs dissipation rate. Our research suggested a new amendment that could remediate PAHs/DDTs co-contaminated agricultural soil without interrupting crop production, and the polyphenol oxidase activity should be considered as a micro-ecological indicator in this process.
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