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Performance of a Hollow Fiber Membrane Bioreactor for the Treatment of Gaseous Toluene  

Son, Young-Gyu (Department of Civil & Environmental Engineering, Korea University)
Kim, Yong-Sik (Department of Civil & Environmental Engineering, Korea University)
Khim, Jee-Hyeong (Department of Civil & Environmental Engineering, Korea University)
Song, Ji-Hyeon (Department of Civil & Environmental Engineering, Sejong University)
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Abstract
In this study, a novel bioreactor system using a submerged hollow fiber membrane module (so called hollow fiber membrane bioreactor, HFMB) was applied to investigate feasibility and biodegradation capacity of the system for the treatment of gaseous toluene. First an abiotic test was conducted to determine the mass transfer coefficient, showing the value was similar to that obtained from a diffuser system using fine bubbles. Second, in the presence of toluene-degrading microorganisms, the HFMB was operated at different inlet toluene loading rates of 50, 100, $500\;g/m^3/hr$, and overall removal efficiencies were maintained in the range of $70{\sim}80%$. In addition, elimination capacities(EC) were increased up to $800\;g/m^3/hr$, which was substantially higher than maximum ECs for toluene reported in the biofiltration literature. Consequently, the HFMB was considered as an alternative method over other conventional VOC-treating technologies.
Keywords
Hollow Fiber Membrane Bioreactor; Toluene; Elimination Capacity; Mass Transfer;
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