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Mechanistic model for evaluating the performance of suspended growth bioreactors for the off-gas treatment of VOCs

Paper ID Volume ID Publish Year Pages File Format Full-Text
4661 236 2008 11 PDF Available
Title
Mechanistic model for evaluating the performance of suspended growth bioreactors for the off-gas treatment of VOCs
Abstract

A mechanistic model capable to predict toluene removal in suspended growth bioreactors (SGRs) was proposed and validated. The model predicted with reasonable accuracy both toluene elimination capacities (11% of relative average error) and biomass concentration (6% of relative average error) in a Pseudomonas putida F1 culture growing in a lab-scale chemostat. Unlike previously reported mechanistic models this holistic model was capable to predict process performance under toluene, oxygen or nutrient limiting conditions. Mass transport, Henry law, and biomass yield coefficients were the most significant parameters influencing model predictions as shown by the sensitivity analysis performed. In addition, an innovative vector-based solving approach was proposed, which allowed reducing the complex systems of eight non-linear algebraic equations into a single equation and provided the dimensionless numbers necessary for bioreactor scale-up. Being based in general kinetic and mass transport equations it can be adapted to other processes where mass transport from a gaseous to an aqueous phase is involved.

Keywords
Biodegradation; Bioreactors; Gas–liquid mass transfer; Modelling; Pseudomonas putida F1; Volatile organic compounds
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 38, Issue 3, 15 March 2008, Pages 395–405
Authors
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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