fulltext.study @t Gmail

Estimation of the contribution of immobilized biofilm and suspended biomass to the biodegradation of phenol in membrane contactors

Paper ID Volume ID Publish Year Pages File Format Full-Text
4288 219 2009 7 PDF Available
Title
Estimation of the contribution of immobilized biofilm and suspended biomass to the biodegradation of phenol in membrane contactors
Abstract

The biodegradation of phenol by Pseudomonas putida BCRC 14365 at 30 °C and pH 7 was studied in microporous polypropylene (PP) hollow-fiber membrane contactors. The fibers were pre-wetted by ethanol to make them more hydrophilic. The initial cell concentration was fixed at 25 g/m3 (optical density, 0.064). In this system, microbial cells are separated from phenol-containing wastewater to avoid the toxic effect of phenol. Phenol could be completely degraded, even though the initial phenol level was high up to 2150 g/m3, with the help of not only suspended biomass but also membrane-attached biofilm. In order to quantitatively estimate the contribution of biofilm to the overall process, a simplified kinetic model was proposed that combines the steady mass transfer equations and dynamic growth kinetics of suspended cells but assumes the absence of membrane-attached biofilm. Under the phenol levels studied (500–2150 g/m3), it was shown that the amount of phenol removed by the biofilm was less than 50% during the process. Also, the contribution of biofilm remained not more than 35% when the initial phenol level was increased to 2150 g/m3.

Keywords
Biodegradation; Mass transfer; Phenol; Microporous membranes; Biofilms; Dynamic modeling
First Page Preview
Estimation of the contribution of immobilized biofilm and suspended biomass to the biodegradation of phenol in membrane contactors
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 43, Issue 2, 15 February 2009, Pages 122–128
Authors
, ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us