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Open AccessArticle

Engineering Functionalized Chitosan-Based Sorbent Material: Characterization and Sorption of Toxic Elements

1
Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, Campinas 13084-971, SP, Brazil
2
Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa 25120, Pakistan
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Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Deep Utilization Technology of Rock-salt Resource, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian 223003, China
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School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China
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Department of Chemsitry, Gomal University, D. I. Khan 29220, Pakistan
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School of Engineering and Sciences, Campus Monterrey, Tecnologico de Monterrey, Ave Eugenio Garza Sada 2501, Monterrey CP 64849, N.L., Mexico
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2019, 9(23), 5138; https://doi.org/10.3390/app9235138
Received: 28 October 2019 / Revised: 21 November 2019 / Accepted: 23 November 2019 / Published: 27 November 2019
(This article belongs to the Special Issue The Adsorption of Emerging Contaminants in an Aqueous Environment Ⅱ)
The present study reports the engineering of functionalized chitosan (CH)-based biosorbent material. Herein, a two-step reaction was performed to chemically modify the CH using 1,4-bis(3-aminopropyl) piperazine to incorporate nitrogen basic centers for cations sorption from the aqueous environment. The resultant functionalized chitosan-based sorbent material was designated as CH-ANP and characterized using various analytical techniques, including elemental analysis, Fourier-transform infrared spectroscopy (FTIR), 13C NMR (in solid-state), X-ray diffraction, and thermal analysis. Then, the newly engineered CH-ANP was employed for the removal of copper, lead, and cadmium in the aqueous medium. Langmuir sorption isotherm analysis revealed that the highest sorption abilities achieved were 2.82, 1.96, and 1.60 mmol g−1 for copper, cadmium, and lead, respectively. Linear and nonlinear regression methods were deployed on the sorption data to study the behavior of the Langmuir, the Freundlich, and the Temkin sorption isotherms. Among the four different forms, the Langmuir isotherm type 1 fit well to the experimental data as compared to the other models. It also showed the lowest values of error, and a higher correlation coefficient than the Freundlich and Temkin models; thus it was the best fit with the experimental data compared to the latter two models. In conclusion, the findings suggest that chemically modified novel materials with enhanced Lewis basic centers are useful and promising candidates for the sorption of various toxic cations in aqueous solution. View Full-Text
Keywords: sorption; chitosan; functionalization; glycidyl methacrylate; characterization; cation removal; isotherm sorption; chitosan; functionalization; glycidyl methacrylate; characterization; cation removal; isotherm
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MDPI and ACS Style

Khan, A.; Ali, N.; Bilal, M.; Malik, S.; Badshah, S.; Iqbal, H.M.N. Engineering Functionalized Chitosan-Based Sorbent Material: Characterization and Sorption of Toxic Elements. Appl. Sci. 2019, 9, 5138. https://doi.org/10.3390/app9235138

AMA Style

Khan A, Ali N, Bilal M, Malik S, Badshah S, Iqbal HMN. Engineering Functionalized Chitosan-Based Sorbent Material: Characterization and Sorption of Toxic Elements. Applied Sciences. 2019; 9(23):5138. https://doi.org/10.3390/app9235138

Chicago/Turabian Style

Khan, Adnan; Ali, Nisar; Bilal, Muhammad; Malik, Sumeet; Badshah, Syed; Iqbal, Hafiz M.N. 2019. "Engineering Functionalized Chitosan-Based Sorbent Material: Characterization and Sorption of Toxic Elements" Appl. Sci. 9, no. 23: 5138. https://doi.org/10.3390/app9235138

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