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, Abd. Aziz, Mohd Azoddein, Mior Ahmad Khushairi, Mohd Zahari, Mazrul Nezam, Abu Seman, Mohammed Saedi, Jami, Olalere, Olusegun Abayomi, Alara, Oluwaseun Ruth
Format:	Article
Language:	English
Published:	King Saud University 2017
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/21390/ http://umpir.ump.edu.my/id/eprint/21390/ http://umpir.ump.edu.my/id/eprint/21390/ http://umpir.ump.edu.my/id/eprint/21390/1/Optimization%20of%20process%20parameters%20in%20mixed%20sulfide%20oxidation%20bacterial.pdf

id	ump-21390
recordtype	eprints
spelling	ump-213902019-09-10T04:47:11Z http://umpir.ump.edu.my/id/eprint/21390/ Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool Ahmad, Mani Malam Abd. Aziz, Mohd Azoddein Mior Ahmad Khushairi, Mohd Zahari Mazrul Nezam, Abu Seman Mohammed Saedi, Jami Olalere, Olusegun Abayomi Alara, Oluwaseun Ruth TP Chemical technology 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. King Saud University 2017 Article PeerReviewed text en cc_by_nc_nd http://umpir.ump.edu.my/id/eprint/21390/1/Optimization%20of%20process%20parameters%20in%20mixed%20sulfide%20oxidation%20bacterial.pdf Ahmad, Mani Malam and Abd. Aziz, Mohd Azoddein and Mior Ahmad Khushairi, Mohd Zahari and Mazrul Nezam, Abu Seman and Mohammed Saedi, Jami and Olalere, Olusegun Abayomi and Alara, Oluwaseun Ruth (2017) Optimization of process parameters in mixed sulfide oxidation bacterial culture using response surface methodology as a tool. Journal of King Saud University - Science. pp. 1-8. ISSN 1018-3647 (In Press) https://doi.org/10.1016/j.jksus.2017.11.001 https://doi.org/10.1016/j.jksus.2017.11.001
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Ahmad, Mani Malam Abd. Aziz, Mohd Azoddein Mior Ahmad Khushairi, Mohd Zahari Mazrul Nezam, Abu Seman Mohammed Saedi, Jami Olalere, Olusegun Abayomi Alara, Oluwaseun Ruth 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 Abd. Aziz, Mohd Azoddein Mior Ahmad Khushairi, Mohd Zahari Mazrul Nezam, Abu Seman Mohammed Saedi, Jami Olalere, Olusegun Abayomi Alara, Oluwaseun Ruth
author_facet	Ahmad, Mani Malam Abd. Aziz, Mohd Azoddein Mior Ahmad Khushairi, Mohd Zahari Mazrul Nezam, Abu Seman Mohammed Saedi, Jami Olalere, Olusegun Abayomi Alara, Oluwaseun Ruth
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	King Saud University
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/21390/ http://umpir.ump.edu.my/id/eprint/21390/ http://umpir.ump.edu.my/id/eprint/21390/ http://umpir.ump.edu.my/id/eprint/21390/1/Optimization%20of%20process%20parameters%20in%20mixed%20sulfide%20oxidation%20bacterial.pdf
first_indexed	2023-09-18T22:31:21Z
last_indexed	2023-09-18T22:31:21Z
_version_	1777416306868355072

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

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