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.
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.
Bioresour Technol. 2015 Jan;175:231-8. doi: 10.1016/j.biortech.2014.10.039. Epub 2014 Oct 22.
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.
本研究采用皂素来提高生物滴滤塔（BTF）中己烷的去除率。通过对比实验，考察了不同皂素浓度、不同己烷负荷率（LR）和不同空床气接触时间（EBCT）下，皂素对两个 BTF 中己烷去除效果的影响。结果表明，营养进料中皂素的最佳浓度为 50.0mg/L。当有机己烷 LR 从 47.8 增加到 120.0gm-3h-1 时，添加皂素的 BTF1 和未添加皂素的 BTF2 的去除效率（RE）分别从 91.3%降至 83.3%和从 62.8%降至 56.8%。当气体 EBCT 从 30.0 降至 7.5s 时，BTF1 的 RE 从 88.4%降至 64.5%，BTF2 的 RE 从 61.4%降至 38.3%。皂素还可以降低介质床内的生物量积累速率。这些结果可作为设计和运行用于去除疏水性 VOC 的 BTF 的参考依据。
Zotero 插件