Anaerobic biodegradation of polycyclic aromatic hydrocarbons

Chao Chen; Zhan Zhang; Ping Xu; Haiyang Hu; Hongzhi Tang

doi:10.1016/j.envres.2023.115472

Anaerobic biodegradation of polycyclic aromatic hydrocarbons

Environ Res. 2023 Apr 15:223:115472. doi: 10.1016/j.envres.2023.115472. Epub 2023 Feb 10.

Authors

Chao Chen¹, Zhan Zhang², Ping Xu³, Haiyang Hu⁴, Hongzhi Tang⁵

Affiliations

¹ College of Life Science, Dalian Minzu University, Dalian, 116600, Liaoning, China; State Key Laboratory of Microbial Metabolism, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
² China Tobacco Henan Industrial Co. Ltd., Zhengzhou, 450000, China.
³ State Key Laboratory of Microbial Metabolism, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
⁴ State Key Laboratory of Microbial Metabolism, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China. Electronic address: huhaiyang@sjtu.edu.cn.
⁵ State Key Laboratory of Microbial Metabolism, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China. Electronic address: tanghongzhi@sjtu.edu.cn.

PMID: 36773640
DOI: 10.1016/j.envres.2023.115472

Abstract

Although many anaerobic microorganisms that can degrade PAHs have been harnessed, there is still a large gap between laboratory achievements and practical applications. Here, we review the recent advances in the biodegradation of PAHs under anoxic conditions and highlight the mechanistic insights into the metabolic pathways and functional genes. Achievements of practical application and enhancing strategies of anaerobic PAHs bioremediation in soil were summarized. Based on the concerned issues during research, perspectives of further development were proposed including time-consuming enrichment, byproducts with unknown toxicity, and activity inhibition with low temperatures. In addition, meta-omics, synthetic biology and engineering microbiome of developing microbial inoculum for anaerobic bioremediation applications are discussed. We anticipate that integrating the theoretical research on PAHs anaerobic biodegradation and its successful application will advance the development of anaerobic bioremediation.

Keywords: Anaerobic biodegradation; Anaerobic bioremediation; Electron acceptors; Polycyclic aromatic hydrocarbons.

Publication types

Review
Research Support, Non-U.S. Gov't

MeSH terms

Anaerobiosis
Biodegradation, Environmental
Polycyclic Aromatic Hydrocarbons* / metabolism
Soil
Soil Pollutants* / analysis

Substances

Polycyclic Aromatic Hydrocarbons
Soil
Soil Pollutants