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Preparation of electrospun cellulose acetate/chitosan membranes for efficient sorption of heavy metals from aqueous solutions

Guided by efficient utilization of natural abundant cellulose and chitosan as separation materials, it is desired to tailor the composition of electrospun cellulose acetate/chitosan (CL/CS) membranes to achieve their optimal application in the management of aquatic heavy metal pollution. In this wor...

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Auteurs principaux: Du, Xuan, Abdul Rashid, Suraya, Abdullah, Luqman Chuah, Abdul Rahman, Norizah
Format: Article
Langue:English
Publié: Elsevier 2024
Accès en ligne:http://psasir.upm.edu.my/id/eprint/113599/1/113599.pdf
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spelling oai:psasir.upm.edu.my:113599 http://psasir.upm.edu.my/id/eprint/113599/ Preparation of electrospun cellulose acetate/chitosan membranes for efficient sorption of heavy metals from aqueous solutions Du, Xuan Abdul Rashid, Suraya Abdullah, Luqman Chuah Abdul Rahman, Norizah Guided by efficient utilization of natural abundant cellulose and chitosan as separation materials, it is desired to tailor the composition of electrospun cellulose acetate/chitosan (CL/CS) membranes to achieve their optimal application in the management of aquatic heavy metal pollution. In this work, CL/CS membranes with enhanced surface area of 11.3–38.6 m2/g were successfully fabricated via electrospinning technique by dissolving cellulose acetate and chitosan into the environmental-friendly electrospinning solvent of LiOH/thiourea/H2O. Electrospun CL/CS membranes allowed the efficient sorption of Cr(VI), Pb(II) and Cu(II) with favorable kinetics (8.0 h), and excellent capacities (127.6 mg/g for Cr(VI), 66.2 mg/g for Pb(II), 46.7 mg/g for Cu(II) at pH 5.0, T 298 K). Meanwhile, they presented favorable efficiencies in the removal of these multiple heavy metals from acid simulated wastewaters. The spectroscopic analysis results indicated that the sorption mechanism should be dominant by the surface complexation of heavy metals with hydroxyl O-/amino N-species, the electrostatic attraction (protonated NH3+ with negatively charged HCrO4-, deprotonated O- with positively charged Pb(II) and Cu(II)), as well as the reduction of Cr(VI) to Cr(III) by surface reductive N-species. This work demonstrated the feasibility of electrospun CL/CS membranes as a promising choice for the remediation of aquatic heavy metals. Elsevier 2024 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/113599/1/113599.pdf Du, Xuan and Abdul Rashid, Suraya and Abdullah, Luqman Chuah and Abdul Rahman, Norizah (2024) Preparation of electrospun cellulose acetate/chitosan membranes for efficient sorption of heavy metals from aqueous solutions. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 699. art. no. 134698. pp. 1-11. ISSN 0927-7757; eISSN: 1873-4359 https://www.sciencedirect.com/science/article/pii/S0927775724015620?via%3Dihub 10.1016/j.colsurfa.2024.134698
institution UPM IR
collection UPM IR
language English
description Guided by efficient utilization of natural abundant cellulose and chitosan as separation materials, it is desired to tailor the composition of electrospun cellulose acetate/chitosan (CL/CS) membranes to achieve their optimal application in the management of aquatic heavy metal pollution. In this work, CL/CS membranes with enhanced surface area of 11.3–38.6 m2/g were successfully fabricated via electrospinning technique by dissolving cellulose acetate and chitosan into the environmental-friendly electrospinning solvent of LiOH/thiourea/H2O. Electrospun CL/CS membranes allowed the efficient sorption of Cr(VI), Pb(II) and Cu(II) with favorable kinetics (8.0 h), and excellent capacities (127.6 mg/g for Cr(VI), 66.2 mg/g for Pb(II), 46.7 mg/g for Cu(II) at pH 5.0, T 298 K). Meanwhile, they presented favorable efficiencies in the removal of these multiple heavy metals from acid simulated wastewaters. The spectroscopic analysis results indicated that the sorption mechanism should be dominant by the surface complexation of heavy metals with hydroxyl O-/amino N-species, the electrostatic attraction (protonated NH3+ with negatively charged HCrO4-, deprotonated O- with positively charged Pb(II) and Cu(II)), as well as the reduction of Cr(VI) to Cr(III) by surface reductive N-species. This work demonstrated the feasibility of electrospun CL/CS membranes as a promising choice for the remediation of aquatic heavy metals.
format Article
author Du, Xuan
Abdul Rashid, Suraya
Abdullah, Luqman Chuah
Abdul Rahman, Norizah
spellingShingle Du, Xuan
Abdul Rashid, Suraya
Abdullah, Luqman Chuah
Abdul Rahman, Norizah
Preparation of electrospun cellulose acetate/chitosan membranes for efficient sorption of heavy metals from aqueous solutions
author_facet Du, Xuan
Abdul Rashid, Suraya
Abdullah, Luqman Chuah
Abdul Rahman, Norizah
author_sort Du, Xuan
title Preparation of electrospun cellulose acetate/chitosan membranes for efficient sorption of heavy metals from aqueous solutions
title_short Preparation of electrospun cellulose acetate/chitosan membranes for efficient sorption of heavy metals from aqueous solutions
title_full Preparation of electrospun cellulose acetate/chitosan membranes for efficient sorption of heavy metals from aqueous solutions
title_fullStr Preparation of electrospun cellulose acetate/chitosan membranes for efficient sorption of heavy metals from aqueous solutions
title_full_unstemmed Preparation of electrospun cellulose acetate/chitosan membranes for efficient sorption of heavy metals from aqueous solutions
title_sort preparation of electrospun cellulose acetate/chitosan membranes for efficient sorption of heavy metals from aqueous solutions
publisher Elsevier
publishDate 2024
url http://psasir.upm.edu.my/id/eprint/113599/1/113599.pdf
_version_ 1819302140508635136
score 13.4562235

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