Statistical optimization of aeration and agitation for sewage treatment plant sludge treatment in stirred tank bioreactor

Alam, Md. Zahangir and Muyibi, Suleyman Aremu and Jamal, Parveen and Khan Chowdhury, Ahmed Jalal (2006) Statistical optimization of aeration and agitation for sewage treatment plant sludge treatment in stirred tank bioreactor. In: International Conference on Environment 2006, November 13-15, 2006, Pulau Pinang, Malaysia.

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Abstract

A 2-level full factorial design (22) with one central point was employed to determine the optimum agitation and aeration for effective bioconversion of STP sludge by pure bacterial culture through the removal of chemical oxygen demand (COD). A second order polynomial model was developed to determine the removal of COD with the variation of process conditions in the sludge treatment. Analysis of variance (ANOVA) of full factorial design showed a high coefficient of determination (R2) of 0.976 indicating a satisfactory adjustment of the model with the experimental data. The linear and interaction effects among the factors were identified through the p- and t-test for both cases. The results with the surface response analysis indicated the optimum values of parameters in stirred tank bioreactor were aeration of 1 vvm and agitation of 50 rpm. The final removal of COD with optimum conditions was observed to be 39 mg/L which validated the model determined.

Item Type:	Conference or Workshop Item (UNSPECIFIED)
Additional Information:	4157/5847
Uncontrolled Keywords:	Optimization, sewage treatment plant sludge, bioconversion, stirred tank bioreactor
Subjects:	T Technology > TP Chemical technology T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Dr. Md. Zahangir Alam
Date Deposited:	17 Nov 2011 15:14
Last Modified:	06 Dec 2017 11:59
URI:	http://irep.iium.edu.my/id/eprint/5847

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