Polyvinyl Alcohol/polysaccharide Hydrogel Graft Materials for Arsenic and Heavy Metal Removal

Water pollution from arsenic and some other heavy metals has been reported all over the world. The goal of this investigation is to develop different polysaccharides–polyvinyl alcohol (PVA) hydrogel graft materials for the removal of toxic and carcinogenic arsenic (As) species as well as a series of...

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Main Authors:	Chowdhury, M. N. K., Ahmad Fauzi, Ismail, Beg, M. D. H., Hegde, Gurumurthy, Gohari, Rasoul Jamshidi
Format:	Article
Language:	English
Published:	Royal Society of Chemistry 2015
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/12692/ http://umpir.ump.edu.my/id/eprint/12692/ http://umpir.ump.edu.my/id/eprint/12692/ http://umpir.ump.edu.my/id/eprint/12692/1/Polyvinyl%20Alcohol-Polysaccharide%20Hydrogel%20Graft%20Materials%20for%20Arsenic%20and%20Heavy%20Metal%20Removal.pdf

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spelling	ump-126922018-01-10T02:02:26Z http://umpir.ump.edu.my/id/eprint/12692/ Polyvinyl Alcohol/polysaccharide Hydrogel Graft Materials for Arsenic and Heavy Metal Removal Chowdhury, M. N. K. Ahmad Fauzi, Ismail Beg, M. D. H. Hegde, Gurumurthy Gohari, Rasoul Jamshidi TP Chemical technology Water pollution from arsenic and some other heavy metals has been reported all over the world. The goal of this investigation is to develop different polysaccharides–polyvinyl alcohol (PVA) hydrogel graft materials for the removal of toxic and carcinogenic arsenic (As) species as well as a series of heavy metals (Mn2+, Cr2+, Fe3+, Ni2+, Cu2+ and Pb2+) from contaminated water. Hydrogels were developed with PVA and PVA/polysaccharide (as blended materials) using a γ-ray irradiation technique and then characterized by Fourier transform infrared (FTIR) and gravimetric methods. The absorbed dose of γ-radiation was optimized to obtain good gelation, and some important physical parameters such as gel fraction, degree of swelling and water absorption kinetics of the synthesized hydrogels were also investigated. The optimum absorbed dose of 30 kGy gave a gel fraction of about 98% in the PVA/corn starch (CS) hydrogel. The developed hydrogels have the capability to make chelates, which are utilized for the removal of arsenic and heavy metals. The absorption of arsenic and heavy-metal ions from the respective aqueous solution by the chelating functionalized gels has been assessed by atomic absorption spectrophotometry (AAS). The calculated maximum amount of iron and arsenic removal capacities of 37 075 and 22 112 mg kg−1, respectively, were found for the PVA/CS hydrogel. We also found that polysaccharide (PS) analogues showed affinities toward the metal ions to a considerable extent in the following order: Fe3+ > Mn2+ > Cu2+ >. The results obtained from this study indicate that the functionalized hydrogels show a good chelating tendency and are suitable for water treatment. Royal Society of Chemistry 2015 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/12692/1/Polyvinyl%20Alcohol-Polysaccharide%20Hydrogel%20Graft%20Materials%20for%20Arsenic%20and%20Heavy%20Metal%20Removal.pdf Chowdhury, M. N. K. and Ahmad Fauzi, Ismail and Beg, M. D. H. and Hegde, Gurumurthy and Gohari, Rasoul Jamshidi (2015) Polyvinyl Alcohol/polysaccharide Hydrogel Graft Materials for Arsenic and Heavy Metal Removal. New Journal of Chemistry, 39 (7). pp. 5823-5832. ISSN 1144-0546 http://dx.doi.org/10.1039/C5NJ00509D DOI: 10.1039/C5NJ00509D
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 Chowdhury, M. N. K. Ahmad Fauzi, Ismail Beg, M. D. H. Hegde, Gurumurthy Gohari, Rasoul Jamshidi Polyvinyl Alcohol/polysaccharide Hydrogel Graft Materials for Arsenic and Heavy Metal Removal
description	Water pollution from arsenic and some other heavy metals has been reported all over the world. The goal of this investigation is to develop different polysaccharides–polyvinyl alcohol (PVA) hydrogel graft materials for the removal of toxic and carcinogenic arsenic (As) species as well as a series of heavy metals (Mn2+, Cr2+, Fe3+, Ni2+, Cu2+ and Pb2+) from contaminated water. Hydrogels were developed with PVA and PVA/polysaccharide (as blended materials) using a γ-ray irradiation technique and then characterized by Fourier transform infrared (FTIR) and gravimetric methods. The absorbed dose of γ-radiation was optimized to obtain good gelation, and some important physical parameters such as gel fraction, degree of swelling and water absorption kinetics of the synthesized hydrogels were also investigated. The optimum absorbed dose of 30 kGy gave a gel fraction of about 98% in the PVA/corn starch (CS) hydrogel. The developed hydrogels have the capability to make chelates, which are utilized for the removal of arsenic and heavy metals. The absorption of arsenic and heavy-metal ions from the respective aqueous solution by the chelating functionalized gels has been assessed by atomic absorption spectrophotometry (AAS). The calculated maximum amount of iron and arsenic removal capacities of 37 075 and 22 112 mg kg−1, respectively, were found for the PVA/CS hydrogel. We also found that polysaccharide (PS) analogues showed affinities toward the metal ions to a considerable extent in the following order: Fe3+ > Mn2+ > Cu2+ >. The results obtained from this study indicate that the functionalized hydrogels show a good chelating tendency and are suitable for water treatment.
format	Article
author	Chowdhury, M. N. K. Ahmad Fauzi, Ismail Beg, M. D. H. Hegde, Gurumurthy Gohari, Rasoul Jamshidi
author_facet	Chowdhury, M. N. K. Ahmad Fauzi, Ismail Beg, M. D. H. Hegde, Gurumurthy Gohari, Rasoul Jamshidi
author_sort	Chowdhury, M. N. K.
title	Polyvinyl Alcohol/polysaccharide Hydrogel Graft Materials for Arsenic and Heavy Metal Removal
title_short	Polyvinyl Alcohol/polysaccharide Hydrogel Graft Materials for Arsenic and Heavy Metal Removal
title_full	Polyvinyl Alcohol/polysaccharide Hydrogel Graft Materials for Arsenic and Heavy Metal Removal
title_fullStr	Polyvinyl Alcohol/polysaccharide Hydrogel Graft Materials for Arsenic and Heavy Metal Removal
title_full_unstemmed	Polyvinyl Alcohol/polysaccharide Hydrogel Graft Materials for Arsenic and Heavy Metal Removal
title_sort	polyvinyl alcohol/polysaccharide hydrogel graft materials for arsenic and heavy metal removal
publisher	Royal Society of Chemistry
publishDate	2015
url	http://umpir.ump.edu.my/id/eprint/12692/ http://umpir.ump.edu.my/id/eprint/12692/ http://umpir.ump.edu.my/id/eprint/12692/ http://umpir.ump.edu.my/id/eprint/12692/1/Polyvinyl%20Alcohol-Polysaccharide%20Hydrogel%20Graft%20Materials%20for%20Arsenic%20and%20Heavy%20Metal%20Removal.pdf
first_indexed	2023-09-18T22:14:33Z
last_indexed	2023-09-18T22:14:33Z
_version_	1777415250475220992

Polyvinyl Alcohol/polysaccharide Hydrogel Graft Materials for Arsenic and Heavy Metal Removal

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