Please use this identifier to cite or link to this item: https://doi.org/10.1061/(ASCE)0733-9372(2006)132:3(309)
Title: Continuous cometabolic transformation of 4-chlorophenol in the presence of phenol in a hollow fiber membrane bioreactor
Authors: Li, Y.
Loh, K.-C. 
Keywords: Biodegradation
Biological treatment
Membranes
Phenol
Issue Date: Mar-2006
Source: Li, Y., Loh, K.-C. (2006-03). Continuous cometabolic transformation of 4-chlorophenol in the presence of phenol in a hollow fiber membrane bioreactor. Journal of Environmental Engineering 132 (3) : 309-314. ScholarBank@NUS Repository. https://doi.org/10.1061/(ASCE)0733-9372(2006)132:3(309)
Abstract: An immobilized cell hollow fiber membrane bioreactor was operated continuously for the cometabolic transformation of 4-cp in the presence of phenol. In contrast to the batch operation of the bioreactor in which the immobilized cells were exposed to decreasing substrate concentrations, at high substrate concentrations, under continuous operation, dissolved oxygen was found to be a limiting nutrient. It was found that substrate degradation was enhanced by aerating the feed with pure oxygen. It was also found that the optimum number of hollow fibers in the bioreactor was 25, ca. 30% bioreactor volume. This occurred due to a balance of the pore space available for cell immobilization in the fibers against the extracapillary space available for suspension cell growth. During continuous operation, regardless of feed rate (21-60mL·h-1), the maximum substrate loading was found to be 9mg·h-1 each of phenol and 4-cp in order that both substrates were completely transformed. In anticipation of reduced provision of phenol as a specific growth substrate for 4-cp cometabolic transformation, it was concluded that complete transformation of 4-cp could be effected through a minimum substrate concentration ratio of phenol:4-cp of 1:1.8. © 2006 ASCE.
Source Title: Journal of Environmental Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/88694
ISSN: 07339372
DOI: 10.1061/(ASCE)0733-9372(2006)132:3(309)
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

11
checked on Feb 15, 2018

WEB OF SCIENCETM
Citations

11
checked on Jan 30, 2018

Page view(s)

23
checked on Feb 19, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.