Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool

The integrated bacterial mixed culture consortium with disproportionate oxygen demand was discovered to mutually cooperate with one single biofilm in oxidizing sulfide at different concentration. The present work was carried out to verify the potential of bacterial mixed culture (BMC) in developing...

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Main Authors:	Ahmad, Mani Malam, Mohd Azoddein, Abd.Aziz, Mohd Zahari, Mior Ahmad Khusairi, Abu Seman, Mazrul Nizam, Jami, Mohammed Saedi, Abayomi, Olusegun, Ruth Alara, Oluwaseun
Format:	Article
Language:	English English
Published:	Elsevier B.V. on behalf of King Saud University 2019
Subjects:	TP155 Chemical engineering
Online Access:	http://irep.iium.edu.my/59762/ http://irep.iium.edu.my/59762/ http://irep.iium.edu.my/59762/ http://irep.iium.edu.my/59762/18/59762_Optimization%20of%20process%20parameters%20in%20mixed%20sulfide.pdf http://irep.iium.edu.my/59762/23/59762_Optimization%20of%20process%20parameters%20in%20mixed%20sulfide%20oxidation%20bacterial%20culture%20using%20response%20surface%20methodology%20as%20a%20tool_Scopus.pdf

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spelling	iium-597622020-02-26T07:52:53Z http://irep.iium.edu.my/59762/ Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool Ahmad, Mani Malam Mohd Azoddein, Abd.Aziz Mohd Zahari, Mior Ahmad Khusairi Abu Seman, Mazrul Nizam Jami, Mohammed Saedi Abayomi, Olusegun Ruth Alara, Oluwaseun TP155 Chemical engineering The integrated bacterial mixed culture consortium with disproportionate oxygen demand was discovered to mutually cooperate with one single biofilm in oxidizing sulfide at different concentration. The present work was carried out to verify the potential of bacterial mixed culture (BMC) in developing a predictive optimum condition for sulfide oxidation in a laboratory batch mode. A face centered central composite design (FCCCD) under response surface methodology (RSM) was employed to predict the synergistic effects of initial hydrogen sulfide concentration (100–500 ppm), temperature (30–40 °C) and aeration rates (50–250 vvm) on BMC sulfide oxidation. A total number of 20 experimental runs with 6 centre points were carried out. The obtained results were analyzed using design expert and statistical validation indices to check the adequacy of the obtained quadratic models. The analysis of variance showed that more than 99% of the variation was explained by the models. There was a good agreement between experimental and predicted data. The optimum sulfide removal of 448.75 ppm was achieved at the temperature of 32.4 °C, initial hydrogen sulfide of 500 ppm and aeration rates of 110.06 vvm in 8 h. Therefore, the finding depicts the adequacy of the obtained model in enhancing BMC sulfide oxidation conditions. The model is further affirmed through SEM-EDXS analysis, revealing oxidized sulfide product aggregate of the micrographs coupled with elemental identification and quantitative composition. Elsevier B.V. on behalf of King Saud University 2019-10 Article PeerReviewed application/pdf en http://irep.iium.edu.my/59762/18/59762_Optimization%20of%20process%20parameters%20in%20mixed%20sulfide.pdf application/pdf en http://irep.iium.edu.my/59762/23/59762_Optimization%20of%20process%20parameters%20in%20mixed%20sulfide%20oxidation%20bacterial%20culture%20using%20response%20surface%20methodology%20as%20a%20tool_Scopus.pdf Ahmad, Mani Malam and Mohd Azoddein, Abd.Aziz and Mohd Zahari, Mior Ahmad Khusairi and Abu Seman, Mazrul Nizam and Jami, Mohammed Saedi and Abayomi, Olusegun and Ruth Alara, Oluwaseun (2019) Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool. Journal of King Saud University – Science, 31 (4). pp. 836-843. ISSN 1018-3647 https://www.sciencedirect.com/science/article/pii/S1018364717309114 https://doi.org/10.1016/j.jksus.2017.11.001
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TP155 Chemical engineering
spellingShingle	TP155 Chemical engineering Ahmad, Mani Malam Mohd Azoddein, Abd.Aziz Mohd Zahari, Mior Ahmad Khusairi Abu Seman, Mazrul Nizam Jami, Mohammed Saedi Abayomi, Olusegun Ruth Alara, Oluwaseun Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool
description	The integrated bacterial mixed culture consortium with disproportionate oxygen demand was discovered to mutually cooperate with one single biofilm in oxidizing sulfide at different concentration. The present work was carried out to verify the potential of bacterial mixed culture (BMC) in developing a predictive optimum condition for sulfide oxidation in a laboratory batch mode. A face centered central composite design (FCCCD) under response surface methodology (RSM) was employed to predict the synergistic effects of initial hydrogen sulfide concentration (100–500 ppm), temperature (30–40 °C) and aeration rates (50–250 vvm) on BMC sulfide oxidation. A total number of 20 experimental runs with 6 centre points were carried out. The obtained results were analyzed using design expert and statistical validation indices to check the adequacy of the obtained quadratic models. The analysis of variance showed that more than 99% of the variation was explained by the models. There was a good agreement between experimental and predicted data. The optimum sulfide removal of 448.75 ppm was achieved at the temperature of 32.4 °C, initial hydrogen sulfide of 500 ppm and aeration rates of 110.06 vvm in 8 h. Therefore, the finding depicts the adequacy of the obtained model in enhancing BMC sulfide oxidation conditions. The model is further affirmed through SEM-EDXS analysis, revealing oxidized sulfide product aggregate of the micrographs coupled with elemental identification and quantitative composition.
format	Article
author	Ahmad, Mani Malam Mohd Azoddein, Abd.Aziz Mohd Zahari, Mior Ahmad Khusairi Abu Seman, Mazrul Nizam Jami, Mohammed Saedi Abayomi, Olusegun Ruth Alara, Oluwaseun
author_facet	Ahmad, Mani Malam Mohd Azoddein, Abd.Aziz Mohd Zahari, Mior Ahmad Khusairi Abu Seman, Mazrul Nizam Jami, Mohammed Saedi Abayomi, Olusegun Ruth Alara, Oluwaseun
author_sort	Ahmad, Mani Malam
title	Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool
title_short	Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool
title_full	Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool
title_fullStr	Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool
title_full_unstemmed	Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool
title_sort	optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool
publisher	Elsevier B.V. on behalf of King Saud University
publishDate	2019
url	http://irep.iium.edu.my/59762/ http://irep.iium.edu.my/59762/ http://irep.iium.edu.my/59762/ http://irep.iium.edu.my/59762/18/59762_Optimization%20of%20process%20parameters%20in%20mixed%20sulfide.pdf http://irep.iium.edu.my/59762/23/59762_Optimization%20of%20process%20parameters%20in%20mixed%20sulfide%20oxidation%20bacterial%20culture%20using%20response%20surface%20methodology%20as%20a%20tool_Scopus.pdf
first_indexed	2023-09-18T21:24:41Z
last_indexed	2023-09-18T21:24:41Z
_version_	1777412112530800640

Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool

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