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首页> 外文期刊>Journal of the air & waste management association >The styrene purification performance of biotrickling filter with toluene-styrene acclimatization under acidic conditions
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The styrene purification performance of biotrickling filter with toluene-styrene acclimatization under acidic conditions

机译：酸性条件下甲苯-苯乙烯驯化生物滴滤滤池的苯乙烯净化性能

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摘要

The obvious disadvantages of biotrickling filters (BTFs) are the long start-up time and low removal efficiency (RE) when treating refractory hydrophobic volatile organic compounds (VOCs), which limits its industrial application. It is worthwhile to investigate how to reduce the start-up period of the BTF for treating hydrophobic VOCs. Here, we present the first study to evaluate the strategy of toluene induction combined with toluene-styrene synchronous acclimatization during start-up in a laboratory-scale BTF inoculated with activated sludge for styrene removal, as well as the effects of styrene inlet concentration (0.279 to 2.659 g center dot m(-3)), empty bed residence time (EBRT) (i.e., 136, 90, 68, 45, 34 sec), humidity (7.7% to 88.9%), and pH (i.e., 4, 3, 2.5, 2) on the performance of the BTF system. The experiments were carried out under acidic conditions (pH 4.5) to make fungi dominant in the BTF. The start-up period for styrene in the BTF was shortened to about 28 days. A maximum elimination capacity (ECmax) of 126 g center dot m(-3)center dot hr(-1) with an RE of 80% was attained when styrene inlet loading rate (ILR) was below 180 g center dot m(-3)center dot hr(-1). The highest styrene RE(s) [of BTF] that could be achieved were 95% and 93.4%, respectively, for humidity of 7.7% and at pH 2. A single dominant fungal strain was isolated and identified as Candida palmioleophila strain MA-M11 based on the 26S ribosomal RNA gene. Overall, the styrene induction with the toluene-styrene synchronous acclimatization could markedly reduce the start-up period and enhance the RE of styrene. The BTF dominated by fungi exhibited good performance under low pH and humidity and great potential in treating styrene with higher inlet concentrations. Implications: The application of the toluene induction combined with toluene-styrene synchronous acclimatization demonstrated to be a promising approach for the highly efficient removal of styrene. The toluene induction can accelerate biofilm formation, and the adaptability of microorganisms to styrene can be improved rapidly by the toluene-styrene synchronous acclimatization. The integrated application of two technologies can shorten the start-up period of biotrickling filters markedly and promote its industrial application.
机译：生物滴滤器（BTF）的明显缺点是处理难处理的疏水性挥发性有机化合物（VOC）时启动时间长且去除效率（RE）低，这限制了其工业应用。有必要研究如何减少用于疏水性VOC的BTF的启动时间。在这里，我们目前进行的第一项研究旨在评估在实验室规模BTF中接种活性污泥以去除苯乙烯的实验室规模BTF中甲苯诱导与甲苯-苯乙烯同步驯化相结合的策略以及苯乙烯入口浓度（0.279）的影响。至2.659 g中心点m（-3）），空床停留时间（EBRT）（即136、90、68、45、34秒），湿度（7.7％至88.9％）和pH（即4， 3，2.5，2）关于BTF系统的性能。实验在酸性条件下（pH 4.5）进行，以使真菌在BTF中占优势。 BTF中苯乙烯的启动时间缩短至约28天。当苯乙烯入口负载率（ILR）低于180 g中心点m（-3）时，最大消除容量（ECmax）为126 g中心点m（-3）中心点hr（-1），RE为80％ ）中心点hr（-1）。在7.7％的湿度和pH值为2的情况下，可以达到的[BTF]的最高苯乙烯RE分别为95％和93.4％。分离出一个优势真菌菌株，并将其鉴定为棕榈假丝酵母菌MA-M11。基于26S核糖体RNA基因。总体而言，用甲苯-苯乙烯同步驯化诱导苯乙烯可以显着缩短启动时间并提高苯乙烯的RE。以真菌为主的BTF在低pH和低湿度下表现出良好的性能，并且在处理进口浓度较高的苯乙烯中具有巨大的潜力。启示：甲苯诱导与甲苯-苯乙烯同步驯化相结合的应用被证明是一种高效去除苯乙烯的有前途的方法。甲苯诱导可以加速生物膜的形成，并且通过甲苯-苯乙烯同步驯化可以迅速提高微生物对苯乙烯的适应性。两种技术的综合应用可以显着缩短生物滴滤池的启动时间，并促进其工业应用。

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    Li Kang; Zhou Jiazhen; Wang Liping; Mao Zhen; Xu Ruiwei;

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    China Univ Min & Technol, Sch Environm Sci & Spatial Informat, 1 Daxue Rd, Xuzhou 221116, Jiangsu, Peoples R China;

    Tongji Univ, Coll Environm Sci & Engn, Shanghai, Peoples R China;

    China Univ Min & Technol, Sch Environm Sci & Spatial Informat, 1 Daxue Rd, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Sch Environm Sci & Spatial Informat, 1 Daxue Rd, Xuzhou 221116, Jiangsu, Peoples R China;

    Peking Univ, Coll Environm Sci & Engn, Beijing, Peoples R China;

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