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Adsorption and removal of chromium (VI) contained in aqueous solutions using a chitosan-based hydrogel.
Environ Sci Pollut Res Int. 2019 Oct; 26(28):28481-28489.ES

Abstract

The aim of this work was to study the adsorption and removal of chromium (VI) ions contained in aqueous solutions using a chitosan-based hydrogel synthesized via chemical crosslinking of radical chitosan, polyacrylic acid, and N,N'-methylenebisacrylamide. Fourier-transform infrared spectroscopy confirmed the hydrogel synthesis and presence of reactive functional groups for the adsorption of chromium (VI) ions. The chromium (VI) adsorption mechanism was evaluated using non-linear Langmuir, Freundlich, Redlich-Peterson, and Sips isotherms, with the best fit found by the non-linear Redlich-Peterson isotherm. The maximum chromium (VI) adsorption capacities of the chitosan-based hydrogel were 73.14 and 93.03 mg metal per g dried hydrogel, according to the non-linear Langmuir and Sips isotherm models, respectively. The best kinetic fit was found with the pseudo-nth order kinetic model. The chromium (VI) removal percentage at pH 4.5 and 100 mg L-1 initial metal concentration was 94.72%. The results obtained in this contribution can be useful for future works involving scale-up of a water and wastewater treatment method from a pilot plant to full-scale plant.

Authors+Show Affiliations

Postgraduate Program in Environmental Science, Santa Catarina State University, Av. Luiz de Camões, 2090, Conta Dinheiro,, Lages, SC, CEP: 88520-000, Brazil.Department of Environmental and Sanitary Engineering, Santa Catarina State University, Av. Luiz de Camões, 2090, Conta Dinheiro,, Lages, SC, CEP: 88520-000, Brazil.Department of Environmental and Sanitary Engineering, Santa Catarina State University, Av. Luiz de Camões, 2090, Conta Dinheiro,, Lages, SC, CEP: 88520-000, Brazil.Postgraduate Program in Environmental Science, Santa Catarina State University, Av. Luiz de Camões, 2090, Conta Dinheiro,, Lages, SC, CEP: 88520-000, Brazil. Department of Environmental and Sanitary Engineering, Santa Catarina State University, Av. Luiz de Camões, 2090, Conta Dinheiro,, Lages, SC, CEP: 88520-000, Brazil.Postgraduate Program in Environmental Science, Santa Catarina State University, Av. Luiz de Camões, 2090, Conta Dinheiro,, Lages, SC, CEP: 88520-000, Brazil. alexandre.paulino@udesc.br. Department of Food and Chemical Engineering, Santa Catarina State University, BR 282, km 574,, Pinhalzinho, SC, CEP 89870-000, Brazil. alexandre.paulino@udesc.br.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30229486

Citation

Vilela, Pâmela Becalli, et al. "Adsorption and Removal of Chromium (VI) Contained in Aqueous Solutions Using a Chitosan-based Hydrogel." Environmental Science and Pollution Research International, vol. 26, no. 28, 2019, pp. 28481-28489.
Vilela PB, Dalalibera A, Duminelli EC, et al. Adsorption and removal of chromium (VI) contained in aqueous solutions using a chitosan-based hydrogel. Environ Sci Pollut Res Int. 2019;26(28):28481-28489.
Vilela, P. B., Dalalibera, A., Duminelli, E. C., Becegato, V. A., & Paulino, A. T. (2019). Adsorption and removal of chromium (VI) contained in aqueous solutions using a chitosan-based hydrogel. Environmental Science and Pollution Research International, 26(28), 28481-28489. https://doi.org/10.1007/s11356-018-3208-3
Vilela PB, et al. Adsorption and Removal of Chromium (VI) Contained in Aqueous Solutions Using a Chitosan-based Hydrogel. Environ Sci Pollut Res Int. 2019;26(28):28481-28489. PubMed PMID: 30229486.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Adsorption and removal of chromium (VI) contained in aqueous solutions using a chitosan-based hydrogel. AU - Vilela,Pâmela Becalli, AU - Dalalibera,Amanda, AU - Duminelli,Eduardo Costa, AU - Becegato,Valter Antonio, AU - Paulino,Alexandre Tadeu, Y1 - 2018/09/18/ PY - 2018/07/20/received PY - 2018/09/11/accepted PY - 2018/9/20/pubmed PY - 2020/1/16/medline PY - 2018/9/20/entrez KW - Adsorption isotherms KW - Chitosan KW - Chromium (VI) KW - Hydrogel KW - Kinetic models KW - Removal SP - 28481 EP - 28489 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 26 IS - 28 N2 - The aim of this work was to study the adsorption and removal of chromium (VI) ions contained in aqueous solutions using a chitosan-based hydrogel synthesized via chemical crosslinking of radical chitosan, polyacrylic acid, and N,N'-methylenebisacrylamide. Fourier-transform infrared spectroscopy confirmed the hydrogel synthesis and presence of reactive functional groups for the adsorption of chromium (VI) ions. The chromium (VI) adsorption mechanism was evaluated using non-linear Langmuir, Freundlich, Redlich-Peterson, and Sips isotherms, with the best fit found by the non-linear Redlich-Peterson isotherm. The maximum chromium (VI) adsorption capacities of the chitosan-based hydrogel were 73.14 and 93.03 mg metal per g dried hydrogel, according to the non-linear Langmuir and Sips isotherm models, respectively. The best kinetic fit was found with the pseudo-nth order kinetic model. The chromium (VI) removal percentage at pH 4.5 and 100 mg L-1 initial metal concentration was 94.72%. The results obtained in this contribution can be useful for future works involving scale-up of a water and wastewater treatment method from a pilot plant to full-scale plant. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/30229486/Adsorption_and_removal_of_chromium__VI__contained_in_aqueous_solutions_using_a_chitosan_based_hydrogel_ L2 - https://dx.doi.org/10.1007/s11356-018-3208-3 DB - PRIME DP - Unbound Medicine ER -