期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 26, 期 12, 页码 11591-11604出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-018-2877-2
关键词
Biochar; Biosorption; Carbamazepine; DEHP; Microbial immobilization; VOCs; Waste scrap tires; Wood chips
资金
- Macau Science and Technology Development Fund [FDCT/115/2016/A3, FDCT044/2017/AFJ]
- University of Macau Multi-Year Research Grant [MYRG2017-00181-FST]
This study evaluated the reutilization of waste materials (scrap tires, sewage sludge, and wood chips) to remove volatile organic compounds (VOCs) benzene/toluene/ethylbenzene/xylenes/trichloroethylene/cis-1,2-dichloroethylene (BTEX/TCE/cis-DCE), plasticizer di(2-ethylhexyl) phthalate (DEHP), and pharmaceutically active compound carbamazepine from artificially contaminated water. Different hybrid removal processes were developed: (1) 300mg/L BTEX+20mg/L TCE+10mg/L cis-DCE+tires+Pseudomonas sp.; (2) 250mg/L toluene+sewage sludge biochar+Pseudomonas sp.; (3) 100mg/L DEHP+tires+Acinetobacter sp.; and (4) 20mg/L carbamazepine+wood chips+Phanerochaete chrysosporium. For the hybrid process (1), the removal of xylenes, TCE, and cis-DCE was enhanced, resulted from the contribution of both physical adsorption and biological immobilization removal. The hybrid process (2) was also superior for the removal of DEHP and required a shorter time (2days) for the bioremoval. For the process (3), the biochar promoted the microbial immobilization on its surface and substantially enhanced/speed up the bioremoval of toluene. The fungal immobilization on wood chips in the hybrid process (4) also improved the carbamazepine removal considerably (removal efficiencies of 61.3 +/- 0.6%) compared to the suspended system without wood chips (removal efficiencies of 34.4 +/- 1.8%). These hybrid processes would not only be promising for the bioremediation of environmentally concerned contaminants but also reutilize waste materials as sorbents without any further treatment.
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