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

[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.

[发布机构] 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

[学科分类] 环境科学（综合）

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