fulltext.study @t Gmail

Kinetic modeling of the biodegradation of the aqueous p-xylene in the immobilized soil bioreactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
5077 283 2006 8 PDF Available
Title
Kinetic modeling of the biodegradation of the aqueous p-xylene in the immobilized soil bioreactor
Abstract

Biodegradation kinetics of p-xylene in aqueous solution was studied in a new type of biofilm reactor—immobilized soil bioreactor. Biofilm modeling was performed in order to determine the concentration gradients within the biofilm based on a coupled diffusion-reaction model for cylindrical geometry. The total amount of biomass in the 0.83 L bioreactor changed from 460 to 780 mg during continuous operation. The concentration gradient was typical for a shallow biofilm and also predicts low mass transfer resistance within the biofilm. Rate constants for the continuous regime were determined based on the biomass growth and the amount of substrate utilization, resulting in the values of: maximum specific growth rate (μmax) of 0.0047 h−1, half saturation constant (Ks) of 3.9 mg L−1 and yield (Yx/s) of 0.05 mg biomass mg−1 substrate. For batch operation, a similar yield coefficient was assumed and the experimental data was fitted to the Monod equation. μmax of 0.0047 h−1 (similar to continuous) and Ks of 10 mg L−1 were obtained.

Keywords
Microbial kinetics; p-Xylene; Biodegradation; Bioremediation; Bioreactor; Biofilm
First Page Preview
Kinetic modeling of the biodegradation of the aqueous p-xylene in the immobilized soil bioreactor
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 27, Issue 3, January 2006, Pages 204–211
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