Remediation of 1-Nitropyrene in Soil: A Comparative Study with Pyrene

Shuo Li, Yatao Huang, Minhui Zhang, Yanchen Gao, Canping Pan, Kailin Deng and Bei Fan
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Shuo Li: Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Yatao Huang: Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Minhui Zhang: Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Yanchen Gao: Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Canping Pan: Department of Chemistry, College of Science, China Agricultural University, Beijing 100193, China
Kailin Deng: Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
Bei Fan: Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China

IJERPH, 2020, vol. 17, issue 6, 1-12

Abstract: Nitrated polycyclic aromatic hydrocarbons ( n PAHs) are ubiquitous environmental pollutants, which exhibits higher toxicity than their corresponding parent PAHs ( p PAHs). Recent studies demonstrated that the n PAHs could represent major soil pollution, however the remediation of n PAHs has been rarely reported. In this study, biological, physical, and chemical methods have been applied to remove 1-nitropyrene, the model n PAH, in contaminated soil. A comparative study with pyrene has also been investigated and evaluated. The results suggest that the physical method with activated carbon is an efficient and economical approach, removing 88.1% and 78.0% of 1-nitropyrene and pyrene respectively, within one day. The zero-valent ion has a similar removal performance on 1-nitropyrene (83.1%), converting 1-nitropyrene to 1-aminopyrene in soil via chemical reduction and decreasing the mutagenicity and carcinogenicity of 1-nitropyrene. Biological remediation that employs scallion as a plant model can reduce 55.0% of 1-nitropyrene in soil (from 39.6 to 17.8 μg/kg), while 77.9% of pyrene can be removed by plant. This indicates that n PAHs might be more persistent than corresponding p PAHs in soil. It is anticipated that this study could draw public awareness of nitro-derivatives of p PAHs and provide remediation technologies of carcinogenic n PAHs in soil.

Keywords: n PAHs; 1-nitropyrene; pyrene; soil; remediation (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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