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Enhanced Biofiltration Using Cell Attachment Promotors

机译:使用细胞附着促进剂增强过滤

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摘要

H_2S polluted airstreams were treated in two biotrickling filter columns packed with polyurethane (PU) foam cubes, one with cubes coated with a solution of 25 mg/L of polyethyleneimine (PEI, coated reactor) and the other containing just plain PU cubes (uncoated reactor) at empty bed residence times (EBRT) ranging from 6 to 60 s. and inlet H_2S concentrations ranging from 30 to 235 ppm_v (overall loads of up to 44 gH_2S/m~3bed/h), with overall removal efficiencies (RE) in the range of 90-100% over 125 days. The acclimatization characteristics of the coated reactor outperformed those of the uncoated one, and both the observed elimination capacity (EC) of 77 gH_2S/m~3bed/h and retention of volatile solids (VS) of 42 mgVS/cube were maxima in the coated reactor. Insights into the controlling removal mechanisms were also provided by means of dimensionless analysis of the experimental data. Denaturing gradient gel electrophoresis (DGGE) showed that the dominant surviving species in both units belonged to the genus Acidithiobacillus.
机译:在两个装有聚氨酯(PU)泡沫立方体的生物滴滤滤池塔中处理H_2S污染的气流,一个用装有25 mg / L聚乙烯亚胺溶液的立方体覆盖(PEI,带涂层的反应器),另一个仅包含普通PU立方体(未涂层的反应器) )在6到60 s的空床停留时间(EBRT)。进口H_2S的浓度范围为30至235 ppm_v(总负荷高达44 gH_2S / m〜3bed / h),在125天内的总去除效率(RE)为90-100%。涂层反应器的驯化特性优于未涂层反应器,其观察到的消除能力(EC)为77 gH_2S / m〜3bed / h和挥发性固体(VS)保留率为42 mgVS / cube均达到最大值反应堆。还通过实验数据的无量纲分析提供了对控制去除机理的见解。变性梯度凝胶电泳(DGGE)表明,两个单元中的主要存活物种均属于酸性硫杆菌属。

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  • 来源
    《Environmental Science & Technology》 |2009年第4期|1049-1054|共6页
  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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