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Applied Biochemistry and Biotechnology

, Volume 104, Issue 3, pp 199–214 | Cite as

Mass transfer and benzene removal from air using latex rubber tubing and a hollow-fiber membrane module

  • Mark Fitch
  • Jeffrey Neeman
  • Ellen England
Article

Abstract

A dense-phase latex rubber tube and a polyporous propylene hollow-fiber membrane module (HFMM) were investigated for control of benzene-contaminated gas streams. The abiotic mass flux observed through the latex tube was 3.9–13 mg/(min·m2) for 150 ppm of benzene at various gas and liquid flow rates, while a 100-fold lower mass flux was observed in the HFMM. After seeding with an aromatic-degrading culture enriched from activated sludge, the observed removal was 80% of 150 ppm, corresponding toa mass flux of 45 mg/(min·m2). The observed mass flux through the HFMM during biofiltration also rose, to 0.4 mg/(min·m2). Because the HFMM had a 50-fold higher surface area than the latex tube, the observed ben zene removal was 99.8%. Compared to conventional biofilters, the two reactors had modest elimination capacities, 2.5–18 g/(m3·h) in the latex tube membrane bioreactor and 4.8–58 g/(m3·h) in the HFMM. Although the HFMM had a higher elimination capacity, the gas-phase pressure drop was much greater.

Index Entries

Biofiltration biofilter benzene membrane latex hollowfiber membrane module biokinetic 

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Copyright information

© Humana Press Inc. 2003

Authors and Affiliations

  1. 1.Department of Civil EngineeringUniversity of Missouri-RollaRolla
  2. 2.Black & VeatchKansas City

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