Biochar as An Effective Material on Sediment Remediation for Polycyclic Aromatic Hydrocarbons Contamination

2019 3rd International Conference on Environmental and Energy Engineering

生态环境科学

Chen, Z.^1^2 ; Chen, J.^3 ; Yang, X.^1^2^4 ; Chen, C.^5 ; Huang, S.^6 ; Luo, H.^5

Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou

510070, China^1

State Key Laboratory of Applied Microbiology Southern China, Guangzhou

510070, China^2

Deerfield Academy, Deerfield

MA

01342, United States^3

Guangdong Envitek Environmental Equipment and Engineering Co. Ltd., Guangzhou

510507, China^4

South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou

510535, China^5

Department of Civil and Environmental Engineering, Princeton University, Princeton

NJ

08544, United States^6

关键词: Biological affinity;    Capping materials;    Effective materials;    Electron acceptor;    High adsorption capacity;    Microbial communities;    Polycyclic aromatic hydrocarbons (PAHS);    Sediment remediation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/281/1/012016/pdf
DOI  :  10.1088/1755-1315/281/1/012016

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The mechanism of biochar as capping materials on polycyclic aromatic hydrocarbons (PAHs) removal in river sediments was investigated. When biochar was amended, pyrene was decreased through strengthened aging effects (1.6 times), which was attributed to high adsorption capacity of the biochar. While biochar did not alter the main microbial community, it provided a stable niche for PAHs degradation microorganisms, which attributed to the porosity and biological affinity of biochar. According to the results, biochar increased the opportunity for PAH-degraders to contact PAHs in sediments. When electron acceptors were available, the pyrene-degraders in biochar pore degraded the adsorbed pyrene rapidly (+103%). Therefore, biochar could be an effective material on PAHs removal in sediments.