"Two membrane biofiltration systems that overcome many limitations of conventional compost biolfilters were investigated. A single natural rubber latex tubing and three polysulphone hollow fiber membrane modules (HFMM) were used to examine the biofiltration of gaseous benzene and butanol.
Poor mass closures of benzene (60-80%) were observed in the HFMM systems. The maximum abiotic mass flux attained was 0.01 mg min-1 m-2 (0.004 mg min-1). Operated as a biofilter, the mass closure was close to 100% while removal was not observed. It was determined experimentally that polysulphone was not chemically compatible with benzene, probably due to sorption of benzene into the membrane.
A 95% or greater mass closure was observed with butanol. The highest abiotic mass flux was 1.6 mg min-1 m-2 (0.48 mg min-1). The HFMM was operated for 46 days as a biofilter and achieved removals of 99%. A theoretical model was developed to predict the observed trends in biological removal of butanol due to changes in gas concentrations.
The natural rubber latex tubing was operated with benzene as a bioreactor for 68 days. The maximum removal observed was 40%, with a mass flux of about 0.4 mg min-1 m-2 , higher than the abiotic mass flux of about 0.15 mg min-1 m-2 under the same operating conditions. However, compared with the removal of 80% achieved previously by Neemann (1998) with the same tubing, the removal in this work appeared much lower, possibly due to aging of the tubing"--Abstract, page iii.
Fitch, Mark W.
Burken, Joel G. (Joel Gerard)
Civil, Architectural and Environmental Engineering
M.S. in Environmental Engineering
University of Missouri--Rolla
x, 131 pages
© 2000 Bo Zhang, All rights reserved.
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Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.http://merlin.lib.umsystem.edu/record=b4414647~S5
Zhang, Bo, "Hollow fiber membrane biofiltration for removal of gaseous VOCs" (2000). Masters Theses. 1900.
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