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An environmentally-friendly chitosan-lysozyme biocomposite for the effective removal of dyes and heavy metals from aqueous solutions

Rathinam, Karthik ; Singh, Swatantra Pratap ; Arnusch, Christopher J. ; Kasher, Roni

Carbohydrate polymers, 2018-11, Vol.199, p.506-515 [Periódico revisado por pares]

England: Elsevier Ltd

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Título:
An environmentally-friendly chitosan-lysozyme biocomposite for the effective removal of dyes and heavy metals from aqueous solutions
Autor: Rathinam, Karthik ; Singh, Swatantra Pratap ; Arnusch, Christopher J. ; Kasher, Roni
Assuntos: Adsorption ; Azo Compounds - chemistry ; Cadmium - chemistry ; Chelating Agents - chemical synthesis ; Chelating Agents - chemistry ; Chitosan - chemical synthesis ; Chitosan - chemistry ; Chitosan-lysozyme composite ; Chromium - chemistry ; Coloring Agents - chemistry ; Dye adsorption ; Green Chemistry Technology - methods ; Heavy metals ; Hexavalent chromium ; Kinetics ; Metals, Heavy - chemistry ; Methyl orange ; Molecular Weight ; Muramidase - chemical synthesis ; Muramidase - chemistry ; Nickel - chemistry ; Oxidation-Reduction ; Polysaccharide protein conjugation ; Solutions - chemistry ; Static Electricity ; Thermodynamics ; Viscosity ; Water - chemistry ; Water Purification - methods
É parte de: Carbohydrate polymers, 2018-11, Vol.199, p.506-515
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: [Display omitted] •An environmentally-friendly chitosan-lysozyme biocomposite (CLC) was synthesized.•Chitosan-lysozyme was an effective adsorbent for organic dye and Cr(VI) ions.•Concurrent removal of dye and heavy metals Cr(VI), Cd(II) and Ni(II) from mixtures.•Reduction of Cr(VI) to Cr(III) was evidenced by XPS analysis. Developing efficient and cost-effective adsorbents for removing heavy metals and dyes from water streams is of utmost importance as prolonged human and animals consumption might lead to adverse health effects. In the present study, an environmentally-friendly bio-composite of a polysaccharide with a protein was prepared, by conjugating chitosan to lysozyme using glutaraldehyde as a crosslinker. We investigated the utility of this chitosan-lysozyme biocomposite (CLC) as an adsorbent for the removal of methyl orange (MO) dye and hexavalent chromium (Cr(VI)) ions from aqueous solutions. CLC showed excellent removal of MO and Cr(VI) along with concurrent removal of other heavy metals such as Cd(II) and Ni(II) ions from aqueous mixtures. The maximum adsorption capacities of CLC for MO and Cr(VI) were as high as 435 and 216 mg g−1, respectively. This study demonstrates the potential use of conjugated biopolymers such as chitosan and lysozyme for water treatment applications.
Editor: England: Elsevier Ltd
Idioma: Inglês

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An environmentally-friendly chitosan-lysozyme biocomposite for the effective removal of dyes and heavy metals from aqueous solutions

Rathinam, Karthik ; Singh, Swatantra Pratap ; Arnusch, Christopher J. ; Kasher, Roni

England: Elsevier Ltd

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