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2010 Volume 2 Issue 3

Optimal design of multi-stage bioreactors for degradation of phenolic industrial wastewater: Theoretical analysis


Abstract
An analytical relationship for the optimum design of continuous stirred tank reactors (CSTR’s) in series performing phenol degradation was derived. The optimal design is based on the minimum overall reactor volume required for a certain degree of phenol removal. It is assumed that cell growth kinetics follow the Haldanes kinetics model with respect to phenol and with no oxygen limitation. The effect of operating parameters such as phenol inlet feed concentration, phenol removal efficiency and number of CSTR’s in series on the optimum design are investigated. The design equations compared the volume required for a certain percentage of phenol removal for the optimum design and the equal volume design which is currently practiced design criteria. This study shows that the optimum design (variable volume reactors) is more efficient than equal volume design at relatively high inlet feed substrate concentration, high substrate conversion and increasing the number of reactors. The percentage of degree reduction in the total volume using the optimum design compared to equal size reactors can be up to 80 % depending on the operating parameters. Up to five CSTRs in series and PFR are described in this study. Experimental and kinetic data used in this optimization problem were collected from the literature.

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JOURNAL OF BIOCHEMICAL TECHNOLOGY
JOURNAL OF BIOCHEMICAL TECHNOLOGY
Journal of Biochemical Technology is a double-blind peer reviewed International Journal published by the Deniz Publication on behalf of the Biochemical Technology Society, a Registered Charity Organization from India

AREA OF INTEREST
AREA OF INTEREST
new advances in enzymatic and protein mechanims; applied molecular genetics and biotechnology; genomics and proteomics; metabolic; medical, environmental, food and agro biotechnology.

FOCUS AND SCOPE
FOCUS AND SCOPE
Journal Of Biochemical Technology Provides A Medium For The Rapid Publication Of Full-Length Articles, Mini-Reviews Of New And Emerging Products And Short Communications On All Aspects Of ...

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Guzelyali Mah. Sahilyolu Cad.Defne Sok. No: 7, 34903 Pendik, Istanbul

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This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge. Keywords include, Biochemical Research: Endo/exocytosis, Trafficking, Membrane Biology, Cell Migration, Cell-Matrix Organelle Biogenesis, Cytoskeleton Proteolysis, Cell Death, Cell Cycle, Cancer, Cell Growth/Death, Differentiation, Drug Targets, Gene Therapy, Models of Disease, Proteomics, Stem Cells, Bioenergetics, Mitochondria, Free Radicals, Redox Signaling, Ion Transport/Channels, Oxidative