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Enhanced removal of ethylbenzene from gas streams in biotrickling filters by Tween-20 and Zn(II)
Authors:Lu Wang  Chunping Yang  Yan Cheng  Jian Huang  Haining Yang  Guangming Zeng  Li Lu and Shanying He
Institution:Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China;College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China;College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China;College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China;College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China;College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China;Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China;Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
Abstract:The effects of Tween-20 and Zn(II) on ethylbenzene removal were evaluated using two biotrickling filters (BTFs), BTF1 and BTF2. Only BTF1 was fed with Tween-20 and Zn(II). Results show that ethylbenzene removal decreased from 94% to 69% for BTF1 and from 74% to 54% for BTF2 with increased organic loading from 64.8 to 189.0 g ethylbenzene/(m3·hr) at EBRT of 40 sec. The effect of EBRT (60-15 sec) at a constant ethylbenzene inlet concentration was more significant than that of EBRT (30-10 sec) at a constant organic loading. Biomass accumulation rate within packing media was reduced significantly.
Keywords:Biofilm  Biotrickling filter  Ethylbenzene  Surfactant  Zinc
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