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首页> 外文期刊>Applied Microbiology and Biotechnology >Respiratory activity of biofilms: Measurement and its significance for the elimination of n-butanol from waste gas
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Respiratory activity of biofilms: Measurement and its significance for the elimination of n-butanol from waste gas

机译：生物膜的呼吸活性：测量及其对消除废气中正丁醇的意义

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摘要

A reaction chamber was developed to determine the respiratory activity of microorganisms immobilized on various support materials for waste gas treatment. The volumetric respiration rate was identified as a suitable parameter for estimating the degradative activity of waste gas treatment plants. A laboratory trickle-bed reactor was filled with either granular clay, polyamide beads, or sintered styrofoam. n-Butanol was used as model solvent to determine the efficiency of its elimination from the gas phase. This crucial parameter was correlated with the volumetric degradation rate, determined from the overall material balance under steady-state operating conditions. The volumetric respiration rate of n-butanol was determined with the reaction chamber, and exceeded the volumetric degradation rate of n-butanol determined from the reactor 16- to 26-fold, depending on the support material. The respiration rate was correlated to the degradation rate by the stoichiometry of n-butanol oxidation and a correlation factor of 2.6-4.3. The volumetric respiration rate appeared to be a suitable parameter to determine the degradative activity of the trickle-bed reactor used. The volumetric respiration rate can be ultimately applied to estimate the efficiency of elimination of an organic pollutant and to calculate the dimensions of a reactor required to eliminate a given organic load from waste gas.
机译：开发了一个反应室，以确定固定在用于废气处理的各种支持材料上的微生物的呼吸活性。容积呼吸速率被认为是估计废气处理厂降解活性的合适参数。实验室滴流床反应器装有颗粒状粘土，聚酰胺珠或烧结的泡沫聚苯乙烯。使用正丁醇作为模型溶剂，以确定从气相中去除正丁醇的效率。该关键参数与体积降解率相关，该体积降解率由稳态工作条件下的总体材料平衡确定。正丁醇的体积呼吸速率是在反应室中确定的，并且超过了从反应器确定的正丁醇的体积降解速率的16到26倍，具体取决于载体材料。通过正丁醇氧化的化学计量，呼吸速率与降解速率相关，相关因子为2.6-4.3。体积呼吸速率似乎是确定所用滴流床反应器降解活性的合适参数。最终可以将体积呼吸速率应用于估算消除有机污染物的效率，并计算从废气中消除给定有机负荷所需的反应器尺寸。

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