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Adsorption of Zn2+ from synthetic wastewater using dried watermelon rind (D-WMR): An overview of nonlinear and linear regression and error analysis

Sustainable wastewater treatment is one of the biggest issues of the 21st century. Metals such as Zn2+ have been released into the environment due to rapid industrial development. In this study, dried watermelon rind (D-WMR) is used as a low-cost adsorption material to assess natural adsorbentsâ�� a...

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Main Authors:	Altowayti, W.A.H., Othman, N., Al-Gheethi, A., Dzahir, N.H.B.M., Asharuddin, S.M., Alshalif, A.F., Nasser, I.M., Tajarudin, H.A., Al-Towayti, F.A.H.
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Published:	MDPI 2021
Online Access:	https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118849673&doi=10.3390%2fmolecules26206176&partnerID=40&md5=066a3e03c619e75f3273e3f8a48a0e8a http://eprints.utp.edu.my/32386/
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spelling	my.utp.eprints.323862022-03-29T01:25:55Z Adsorption of Zn2+ from synthetic wastewater using dried watermelon rind (D-WMR): An overview of nonlinear and linear regression and error analysis Altowayti, W.A.H. Othman, N. Al-Gheethi, A. Dzahir, N.H.B.M. Asharuddin, S.M. Alshalif, A.F. Nasser, I.M. Tajarudin, H.A. Al-Towayti, F.A.H. Sustainable wastewater treatment is one of the biggest issues of the 21st century. Metals such as Zn2+ have been released into the environment due to rapid industrial development. In this study, dried watermelon rind (D-WMR) is used as a low-cost adsorption material to assess natural adsorbentsâ�� ability to remove Zn2+ from synthetic wastewater. D-WMR was characterized using scanning electron microscope (SEM) and X-ray fluorescence (XRF). According to the results of the analysis, the D-WMR has two colours, white and black, and a significant concentration of mesoporous silica (83.70). Moreover, after three hours of contact time in a synthetic solution with 400 mg/L Zn2+ concentration at pH 8 and 30 to 40 Â°C, the highest adsorption capacity of Zn2+ onto 1.5 g D-WMR adsorbent dose with 150 Âµm particle size was 25 mg/g. The experimental equilibrium data of Zn2+ onto D-WMR was utilized to compare nonlinear and linear isotherm and kinetics models for parameter determination. The best models for fitting equilibrium data were nonlinear Langmuir and pseudo-second models with lower error functions. Consequently, the potential use of D-WMR as a natural adsorbent for Zn2+ removal was highlighted, and error analysis indicated that nonlinear models best explain the adsorption data. Â© 2021 by the authors. Licensee MDPI, Basel, Switzerland. MDPI 2021 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118849673&doi=10.3390%2fmolecules26206176&partnerID=40&md5=066a3e03c619e75f3273e3f8a48a0e8a Altowayti, W.A.H. and Othman, N. and Al-Gheethi, A. and Dzahir, N.H.B.M. and Asharuddin, S.M. and Alshalif, A.F. and Nasser, I.M. and Tajarudin, H.A. and Al-Towayti, F.A.H. (2021) Adsorption of Zn2+ from synthetic wastewater using dried watermelon rind (D-WMR): An overview of nonlinear and linear regression and error analysis. Molecules, 26 (20). http://eprints.utp.edu.my/32386/
institution	Universiti Teknologi Petronas
building	UTP Resource Centre
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Petronas
content_source	UTP Institutional Repository
url_provider	http://eprints.utp.edu.my/
description	Sustainable wastewater treatment is one of the biggest issues of the 21st century. Metals such as Zn2+ have been released into the environment due to rapid industrial development. In this study, dried watermelon rind (D-WMR) is used as a low-cost adsorption material to assess natural adsorbentsâ�� ability to remove Zn2+ from synthetic wastewater. D-WMR was characterized using scanning electron microscope (SEM) and X-ray fluorescence (XRF). According to the results of the analysis, the D-WMR has two colours, white and black, and a significant concentration of mesoporous silica (83.70). Moreover, after three hours of contact time in a synthetic solution with 400 mg/L Zn2+ concentration at pH 8 and 30 to 40 Â°C, the highest adsorption capacity of Zn2+ onto 1.5 g D-WMR adsorbent dose with 150 Âµm particle size was 25 mg/g. The experimental equilibrium data of Zn2+ onto D-WMR was utilized to compare nonlinear and linear isotherm and kinetics models for parameter determination. The best models for fitting equilibrium data were nonlinear Langmuir and pseudo-second models with lower error functions. Consequently, the potential use of D-WMR as a natural adsorbent for Zn2+ removal was highlighted, and error analysis indicated that nonlinear models best explain the adsorption data. Â© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
format	Article
author	Altowayti, W.A.H. Othman, N. Al-Gheethi, A. Dzahir, N.H.B.M. Asharuddin, S.M. Alshalif, A.F. Nasser, I.M. Tajarudin, H.A. Al-Towayti, F.A.H.
spellingShingle	Altowayti, W.A.H. Othman, N. Al-Gheethi, A. Dzahir, N.H.B.M. Asharuddin, S.M. Alshalif, A.F. Nasser, I.M. Tajarudin, H.A. Al-Towayti, F.A.H. Adsorption of Zn2+ from synthetic wastewater using dried watermelon rind (D-WMR): An overview of nonlinear and linear regression and error analysis
author_facet	Altowayti, W.A.H. Othman, N. Al-Gheethi, A. Dzahir, N.H.B.M. Asharuddin, S.M. Alshalif, A.F. Nasser, I.M. Tajarudin, H.A. Al-Towayti, F.A.H.
author_sort	Altowayti, W.A.H.
title	Adsorption of Zn2+ from synthetic wastewater using dried watermelon rind (D-WMR): An overview of nonlinear and linear regression and error analysis
title_short	Adsorption of Zn2+ from synthetic wastewater using dried watermelon rind (D-WMR): An overview of nonlinear and linear regression and error analysis
title_full	Adsorption of Zn2+ from synthetic wastewater using dried watermelon rind (D-WMR): An overview of nonlinear and linear regression and error analysis
title_fullStr	Adsorption of Zn2+ from synthetic wastewater using dried watermelon rind (D-WMR): An overview of nonlinear and linear regression and error analysis
title_full_unstemmed	Adsorption of Zn2+ from synthetic wastewater using dried watermelon rind (D-WMR): An overview of nonlinear and linear regression and error analysis
title_sort	adsorption of zn2+ from synthetic wastewater using dried watermelon rind (d-wmr): an overview of nonlinear and linear regression and error analysis
publisher	MDPI
publishDate	2021
url	https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118849673&doi=10.3390%2fmolecules26206176&partnerID=40&md5=066a3e03c619e75f3273e3f8a48a0e8a http://eprints.utp.edu.my/32386/
_version_	1738657379955769344
score	13.211869

Adsorption of Zn2+ from synthetic wastewater using dried watermelon rind (D-WMR): An overview of nonlinear and linear regression and error analysis

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