Sewage sludge as a renewable resource for citric acid production:optimization of supplementary nutrients

The optimization of supplementary nutrients in the sewage sludge as a basal medium was carried out to determine the media components on the citric acid production. Two statistical designs were employed in the citric acid productions which are Plackett-Burman and central composite design (CCD). For t...

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Main Authors:	Mohamad Hanapi, Nur Hanis, Alam, Md. Zahangir, Abdul Karim, Mohamed Ismail
Format:	Article
Language:	English
Published:	Asian Network for Scientific Information 2011
Subjects:	TP248.13 Biotechnology
Online Access:	http://irep.iium.edu.my/5450/ http://irep.iium.edu.my/5450/ http://irep.iium.edu.my/5450/ http://irep.iium.edu.my/5450/1/Citric-acid-screening.pdf

id	iium-5450
recordtype	eprints
spelling	iium-54502011-11-22T03:41:01Z http://irep.iium.edu.my/5450/ Sewage sludge as a renewable resource for citric acid production:optimization of supplementary nutrients Mohamad Hanapi, Nur Hanis Alam, Md. Zahangir Abdul Karim, Mohamed Ismail TP248.13 Biotechnology The optimization of supplementary nutrients in the sewage sludge as a basal medium was carried out to determine the media components on the citric acid production. Two statistical designs were employed in the citric acid productions which are Plackett-Burman and central composite design (CCD). For the media screening, the two-level Plackett-Burman was applied. Under the experimental conditions, it was observed that total suspended solids of sewage sludge (TSS), sugar, cassava, methanol, potassium di-hydrogen phosphate and urea to be the major factors in maximizing citric acid production. A study of single factor was conducted to find the optimum ranges of parameters for citric acid production followed by the central composite design (CCD) under the responses surface methodology. A polynomial model was created to correlate the relationship between two factors (sewage sludge TSS and sugar) and citric acid production. The optimum yield of citric acid, 29.12 g/L was produced with 0.8% TSS sewage sludge and 7% sugar in four days of fermentation. The determination of coefficient (R2) from the analysis was 0.9527, indicating that the model of this experiment is significant. Asian Network for Scientific Information 2011 Article PeerReviewed application/pdf en http://irep.iium.edu.my/5450/1/Citric-acid-screening.pdf Mohamad Hanapi, Nur Hanis and Alam, Md. Zahangir and Abdul Karim, Mohamed Ismail (2011) Sewage sludge as a renewable resource for citric acid production:optimization of supplementary nutrients. Journal of Applied Sciences, 11 (12). pp. 2163-2170. ISSN 1812-5662 (O), 1812-5654 (P) http://www.scialert.net/abstract/?doi=jas.2011.2163.2170 DOI: 10.3923/jas.2011.2163.2170
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TP248.13 Biotechnology
spellingShingle	TP248.13 Biotechnology Mohamad Hanapi, Nur Hanis Alam, Md. Zahangir Abdul Karim, Mohamed Ismail Sewage sludge as a renewable resource for citric acid production:optimization of supplementary nutrients
description	The optimization of supplementary nutrients in the sewage sludge as a basal medium was carried out to determine the media components on the citric acid production. Two statistical designs were employed in the citric acid productions which are Plackett-Burman and central composite design (CCD). For the media screening, the two-level Plackett-Burman was applied. Under the experimental conditions, it was observed that total suspended solids of sewage sludge (TSS), sugar, cassava, methanol, potassium di-hydrogen phosphate and urea to be the major factors in maximizing citric acid production. A study of single factor was conducted to find the optimum ranges of parameters for citric acid production followed by the central composite design (CCD) under the responses surface methodology. A polynomial model was created to correlate the relationship between two factors (sewage sludge TSS and sugar) and citric acid production. The optimum yield of citric acid, 29.12 g/L was produced with 0.8% TSS sewage sludge and 7% sugar in four days of fermentation. The determination of coefficient (R2) from the analysis was 0.9527, indicating that the model of this experiment is significant.
format	Article
author	Mohamad Hanapi, Nur Hanis Alam, Md. Zahangir Abdul Karim, Mohamed Ismail
author_facet	Mohamad Hanapi, Nur Hanis Alam, Md. Zahangir Abdul Karim, Mohamed Ismail
author_sort	Mohamad Hanapi, Nur Hanis
title	Sewage sludge as a renewable resource for citric acid production:optimization of supplementary nutrients
title_short	Sewage sludge as a renewable resource for citric acid production:optimization of supplementary nutrients
title_full	Sewage sludge as a renewable resource for citric acid production:optimization of supplementary nutrients
title_fullStr	Sewage sludge as a renewable resource for citric acid production:optimization of supplementary nutrients
title_full_unstemmed	Sewage sludge as a renewable resource for citric acid production:optimization of supplementary nutrients
title_sort	sewage sludge as a renewable resource for citric acid production:optimization of supplementary nutrients
publisher	Asian Network for Scientific Information
publishDate	2011
url	http://irep.iium.edu.my/5450/ http://irep.iium.edu.my/5450/ http://irep.iium.edu.my/5450/ http://irep.iium.edu.my/5450/1/Citric-acid-screening.pdf
first_indexed	2023-09-18T20:14:03Z
last_indexed	2023-09-18T20:14:03Z
_version_	1777407669271789568

Sewage sludge as a renewable resource for citric acid production:optimization of supplementary nutrients

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