fulltext.study @t Gmail

Biological phosphate removal by model based fed-batch cultivation of Acinetobacter calcoaceticus

Paper ID Volume ID Publish Year Pages File Format Full-Text
4384 224 2008 6 PDF Available
Title
Biological phosphate removal by model based fed-batch cultivation of Acinetobacter calcoaceticus
Abstract

A simpler phosphate removal process has been proposed involving only aerobic cultivation of Acinetobacter calcoaceticus in a fed-batch mode of treatment. Batch cultivation of A. calcoaceticus was conducted under statistically optimized culture conditions in order to study the kinetics of growth and phosphate uptake. Studies with respect to carbon, nitrogen and phosphate were performed to quantify their inhibitory effect on specific growth rate (if any). Using kinetics/inhibition data, a mathematical model was proposed. The batch model was extrapolated for fed-batch cultivation by incorporating the dilution terms in the model equations so as to predict, suitable nutrient feeding strategy for better phosphate removal. According to the developed feed-strategy, the bioreactor was operated in batch mode for 4 h, after which model based predetermined fresh nutrient feeding (sodium acetate 5.0 g/l) at 2.25 ml/min was started. Model predictions indicated that after 7 h of cultivation process phosphate would be totally consumed. Upon implementation of this model based fed-batch cultivation strategy a biomass accumulation of 4.02 g/l was obtained experimentally against 3.88 g/l concentration predicted by model after 7 h with a residual phosphate concentration of 0.01 g/l. An improvement to 94% phosphate removal efficiency (initial loading 0.175 g/l) in only 7 h was observed in fed-batch cultivation as opposed to 78% (initial loading 0.175 g/l) in 11 h for batch cultivation.

Keywords
Acinetobacter calcoaceticus; Phosphate removal; Aerobic conditions; Substrate inhibition; Mathematical model; Fed-batch
First Page Preview
Biological phosphate removal by model based fed-batch cultivation of Acinetobacter calcoaceticus
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 40, Issue 2, 1 June 2008, Pages 227–232
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