PMID- 25459827 OWN - NLM STAT- MEDLINE DCOM- 20170206 LR - 20181202 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 175 DP - 2015 Jan TI - Effect of saponins on n-hexane removal in biotrickling filters. PG - 231-8 LID - S0960-8524(14)01461-8 [pii] LID - 10.1016/j.biortech.2014.10.039 [doi] AB - Saponins was applied to enhance the removal of n-hexane in a biotrickling filter (BTF) in this study. Comparison experiments were carried out to examine the effect of saponins on n-hexane removal in two BTFs at various saponins concentrations, n-hexane loading rates (LRs) and gas empty bed contact times (EBCTs). Results show that the optimum concentration of saponins in nutrient feed was 50.0mgL(-1). When organic LR of n-hexane increased from 47.8 to 120.0gm(-3)h(-1), the removal efficiency (RE) for BTF1 (with saponins) and BTF2 (without saponins) decreased from 91.3% to 83.3% and from 62.8% to 56.8%, respectively. As gas EBCT decreased from 30.0 to 7.5s, the RE declined from 88.4% to 64.5% for BTF1 and from 61.4% to 38.3% for BTF2. Saponins could also decrease the biomass accumulation rate within the medium bed. These results could be referred in the design and operation of BTFs for hydrophobic VOC removal. CI - Copyright (c) 2014 Elsevier Ltd. All rights reserved. FAU - Tu, Yanhong AU - Tu Y AD - College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China. FAU - Yang, Chunping AU - Yang C AD - College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, PR China. Electronic address: yangcp@zjgsu.edu.cn. FAU - Cheng, Yan AU - Cheng Y AD - College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China. FAU - Zeng, Guangming AU - Zeng G AD - College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China. FAU - Lu, Li AU - Lu L AD - Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, PR China. FAU - Wang, Lu AU - Wang L AD - College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China. LA - eng PT - Journal Article DEP - 20141022 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Air Pollutants) RN - 0 (Hexanes) RN - 0 (Saponins) RN - 0 (Volatile Organic Compounds) RN - 2DDG612ED8 (n-hexane) SB - IM MH - Air Pollutants/analysis/*chemistry MH - Biomass MH - Bioreactors MH - Filtration/methods MH - Hexanes/analysis/*chemistry MH - Saponins/*chemistry MH - Volatile Organic Compounds/analysis/chemistry MH - Waste Management/methods OTO - NOTNLM OT - Biofiltration OT - Biosurfactant OT - Saponins OT - Volatile organic compound OT - n-Hexane EDAT- 2014/12/03 06:00 MHDA- 2017/02/07 06:00 CRDT- 2014/12/03 06:00 PHST- 2014/07/01 00:00 [received] PHST- 2014/10/04 00:00 [revised] PHST- 2014/10/09 00:00 [accepted] PHST- 2014/12/03 06:00 [entrez] PHST- 2014/12/03 06:00 [pubmed] PHST- 2017/02/07 06:00 [medline] AID - S0960-8524(14)01461-8 [pii] AID - 10.1016/j.biortech.2014.10.039 [doi] PST - ppublish SO - Bioresour Technol. 2015 Jan;175:231-8. doi: 10.1016/j.biortech.2014.10.039. Epub 2014 Oct 22.