Enhanced removal of ethylbenzene from gas streams in biotrickling filters by Tween-20 and Zn(II)


Lu Wang , Chunping Yang , Yan Cheng , Jian Huang , Haining Yang , Guangming Zeng , Li Lu , Shanying He

DOI:10.1016/j.jes.2014.04.011

Received January 25, 2014,Revised April 22, 2014, Accepted , Available online December 22, 2014

Volume 26,2014,Pages 2500-2507

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.

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