Photocatalytic Degradation of Palm Oil Mill Effluent Over Ultraviolet-Responsive Titania: Successive Assessments of Significance Factors and Process Optimization

In this study, for the first time, the application of central composite design, a response surface methodology in the design of experiment, was carried out for the optimization of process variables in the photocatalytic degradation of palm oil mill effluent over a UV/titania system. Prior to the opt...

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Main Authors:	Kim, Hoong Ng, Cheng, C. K.
Format:	Article
Language:	English
Published:	Elsevier Ltd 2017
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/16567/ http://umpir.ump.edu.my/id/eprint/16567/ http://umpir.ump.edu.my/id/eprint/16567/ http://umpir.ump.edu.my/id/eprint/16567/1/fkksa-2017-ckcheng-Photocatalytic%20degradation%20of%20palm%20oil%20mill1.pdf

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recordtype	eprints
spelling	ump-165672017-08-09T07:56:27Z http://umpir.ump.edu.my/id/eprint/16567/ Photocatalytic Degradation of Palm Oil Mill Effluent Over Ultraviolet-Responsive Titania: Successive Assessments of Significance Factors and Process Optimization Kim, Hoong Ng Cheng, C. K. TP Chemical technology In this study, for the first time, the application of central composite design, a response surface methodology in the design of experiment, was carried out for the optimization of process variables in the photocatalytic degradation of palm oil mill effluent over a UV/titania system. Prior to the optimization study, the factors (oxygen flowrate, titania loading and initial concentration of palm oil mill effluent waste) were screened using a 23 full-factorial design to determine the signficance of their influences on the degradation of palm oil mill effluent. The screening results showed that all the three main factors were significantly influencing the final degradation of palm oil mill effluent. The analysis of variance (ANOVA) results revealed that the oxygen flowrate (A) contributed the highest effects to the degradation (63.5%), follows by the initial concentration of palm oil mill effluent (C, 22.32%), titania loading (B, 5.69%), and finally the interaction effect between the oxygen flowrate and the initial concentration of palm oil mill effluent (2.29%). In the ensuing optimization process, a quadratic model with R2-value of 0.92 was found to offer the best correlation judging from the fitting test as well as residual analysis. All the terms, including main factors and interaction effects, were significant to the degradation, except the interactions between oxygen flowrate and initial concentration of palm oil mill effluent (AC), as well as titania loading and initial concentration of palm oil mill effluent (BC). Validation experiments were conducted and the degradations obtained were 54.33% and 55.62%, with only 4.41% deviation from the predicted value. Elsevier Ltd 2017 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/16567/1/fkksa-2017-ckcheng-Photocatalytic%20degradation%20of%20palm%20oil%20mill1.pdf Kim, Hoong Ng and Cheng, C. K. (2017) Photocatalytic Degradation of Palm Oil Mill Effluent Over Ultraviolet-Responsive Titania: Successive Assessments of Significance Factors and Process Optimization. Journal of Cleaner Production, 142 (4). pp. 2073-2083. ISSN 0959-6526 (print), 1879-1786 (online) http://dx.doi.org/10.1016/j.jclepro.2016.11.077 DOI: 10.1016/j.jclepro.2016.11.077
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 Kim, Hoong Ng Cheng, C. K. Photocatalytic Degradation of Palm Oil Mill Effluent Over Ultraviolet-Responsive Titania: Successive Assessments of Significance Factors and Process Optimization
description	In this study, for the first time, the application of central composite design, a response surface methodology in the design of experiment, was carried out for the optimization of process variables in the photocatalytic degradation of palm oil mill effluent over a UV/titania system. Prior to the optimization study, the factors (oxygen flowrate, titania loading and initial concentration of palm oil mill effluent waste) were screened using a 23 full-factorial design to determine the signficance of their influences on the degradation of palm oil mill effluent. The screening results showed that all the three main factors were significantly influencing the final degradation of palm oil mill effluent. The analysis of variance (ANOVA) results revealed that the oxygen flowrate (A) contributed the highest effects to the degradation (63.5%), follows by the initial concentration of palm oil mill effluent (C, 22.32%), titania loading (B, 5.69%), and finally the interaction effect between the oxygen flowrate and the initial concentration of palm oil mill effluent (2.29%). In the ensuing optimization process, a quadratic model with R2-value of 0.92 was found to offer the best correlation judging from the fitting test as well as residual analysis. All the terms, including main factors and interaction effects, were significant to the degradation, except the interactions between oxygen flowrate and initial concentration of palm oil mill effluent (AC), as well as titania loading and initial concentration of palm oil mill effluent (BC). Validation experiments were conducted and the degradations obtained were 54.33% and 55.62%, with only 4.41% deviation from the predicted value.
format	Article
author	Kim, Hoong Ng Cheng, C. K.
author_facet	Kim, Hoong Ng Cheng, C. K.
author_sort	Kim, Hoong Ng
title	Photocatalytic Degradation of Palm Oil Mill Effluent Over Ultraviolet-Responsive Titania: Successive Assessments of Significance Factors and Process Optimization
title_short	Photocatalytic Degradation of Palm Oil Mill Effluent Over Ultraviolet-Responsive Titania: Successive Assessments of Significance Factors and Process Optimization
title_full	Photocatalytic Degradation of Palm Oil Mill Effluent Over Ultraviolet-Responsive Titania: Successive Assessments of Significance Factors and Process Optimization
title_fullStr	Photocatalytic Degradation of Palm Oil Mill Effluent Over Ultraviolet-Responsive Titania: Successive Assessments of Significance Factors and Process Optimization
title_full_unstemmed	Photocatalytic Degradation of Palm Oil Mill Effluent Over Ultraviolet-Responsive Titania: Successive Assessments of Significance Factors and Process Optimization
title_sort	photocatalytic degradation of palm oil mill effluent over ultraviolet-responsive titania: successive assessments of significance factors and process optimization
publisher	Elsevier Ltd
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/16567/ http://umpir.ump.edu.my/id/eprint/16567/ http://umpir.ump.edu.my/id/eprint/16567/ http://umpir.ump.edu.my/id/eprint/16567/1/fkksa-2017-ckcheng-Photocatalytic%20degradation%20of%20palm%20oil%20mill1.pdf
first_indexed	2023-09-18T22:22:21Z
last_indexed	2023-09-18T22:22:21Z
_version_	1777415741029482496

Photocatalytic Degradation of Palm Oil Mill Effluent Over Ultraviolet-Responsive Titania: Successive Assessments of Significance Factors and Process Optimization

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