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首页> 外文期刊>Bioprocess and Biosystems Engineering >Effects of nitrogen source and empty bed residence time on the removal of styrene gaseous emissions by biotrickling filtration
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Effects of nitrogen source and empty bed residence time on the removal of styrene gaseous emissions by biotrickling filtration

机译:氮源和空床停留时间对生物滴滤去除苯乙烯气态排放物的影响

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摘要

The removal of styrene-polluted air emissions by biotrickling filtration was performed to evaluate the influence of using nitrate and urea as a nitrogen source in the nutrient solution supplied to two bioreactors run in parallel under the same operational conditions for 3 months. The use of urea resulted in less biomass content along the packed bed and better performance of the process, with a maximum elimination capacity (EC) of 57.6 g C m~(-3) h~(-1) (removal efficiency (RE) of 88.3% and empty bed residence time (EBRT) of 60 s), which was around 54% higher than when using nitrate. EBRTs of 60, 30 and 15 s were evaluated with a urea-based nutrient supply. By decreasing the EBRT from 60 to 30 s the styrene concentration that could be treated with REs above 80% was almost the half, from 1,100 to 600 mg C m"3, resulting in ECs of 52.8 g C m~(-3) h~(-1). Working at 15 s was not possible to obtain REs higher than 40% with a maximum EC of 28.5 g C m~(-3)h~(-1).
机译:通过生物滴滤过滤去除苯乙烯污染的空气排放物,以评估使用硝酸盐和尿素作为氮源在供应给两个在相同操作条件下平行运行三个生物反应器的营养液中的影响。尿素的使用导致沿填充床的生物量减少,工艺性能更好,最大消除量(EC)为57.6 g C m〜(-3)h〜(-1)(去除效率(RE)效率为88.3%,空床停留时间(EBRT)为60 s),比使用硝酸盐时高约54%。使用基于尿素的营养物评估60、30和15 s的EBRT。通过将EBRT从60 s降低到30 s,可以用80%以上的RE处理的苯乙烯浓度几乎从1100 mg到600 mg C m“ 3减少了一半,因此ECs为52.8 g C m〜(-3)h 〜(-1)。在15 s下工作不可能获得高于40%的RE,最大EC为28.5 g C m〜(-3)h〜(-1)。

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  • 来源
    《Bioprocess and Biosystems Engineering》 |2011年第7期|p.859-867|共9页
  • 作者单位

    Departament d'Enginyeria Qufmica, Escola Tecnica Superior d'Enginyeria, Universitat de Valencia, Dr. Moliner, 50,46100 Burjassot (Valencia), Spain;

    Departament d'Enginyeria Qufmica, Escola Tecnica Superior d'Enginyeria, Universitat de Valencia, Dr. Moliner, 50,46100 Burjassot (Valencia), Spain;

    Departament d'Enginyeria Qufmica, Escola Tecnica Superior d'Enginyeria, Universitat de Valencia, Dr. Moliner, 50,46100 Burjassot (Valencia), Spain;

    Departament d'Enginyeria Qufmica, Escola Tecnica Superior d'Enginyeria, Universitat de Valencia, Dr. Moliner, 50,46100 Burjassot (Valencia), Spain;

    Departament d'Enginyeria Qufmica, Escola Tecnica Superior d'Enginyeria, Universitat de Valencia, Dr. Moliner, 50,46100 Burjassot (Valencia), Spain;

    Departament d'Enginyeria Qufmica, Escola Tecnica Superior d'Enginyeria, Universitat de Valencia, Dr. Moliner, 50,46100 Burjassot (Valencia), Spain;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biotrickling filter; styrene; nitrogen source; empty bed residence time; living cells;

    机译:生物滴滤池;苯乙烯氮源空床停留时间;活细胞;

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