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Adsorption of radioactive cesium using synthesized chitosan-g-poly(acrylic acid/N-vinylcaprolactam) by γ-irradiation by Amr M. Emara; Emad M. Elsharma; Islam M. Abdelmonem is a Materials Science article available to read on EtoBox.

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To remove radioactive cesium ions from wastewater, graft copolymer of chitosan-g-poly(acrylic acid/Nvinylcaprolactam) [CTS-P(AA/VC)] was synthesized. The shape, thermal stability, and structure of the graft copolymer were all successfully characterized by SEM, TGA, and FT-IR. Batch sorption experiments were carried out in order to evaluate the effects of various parameters such as pH, contact time, adsorbate initial concentration, and temperature. The kinetics data of batch interaction were also extensively covered with various (linear and non-linear) models of sorption kinetic such as pseudo-first-order, pseudo-second-order, and intraparticle diffusion models. Langmuir and Freundrich equations isotherm models were studied by linear and non-linear equations. To determine the best-fitting equations, the correlation coefficient (R 2 ) and the normalized standard deviation Δq (%) were used as error analysis methods. It appeared briefly that the linear and non-linear forms of pseudo-second order and the Langmuir model are better fitted for kinetic and isotherm models, respectively. The elimination capability for cesium-134 radionuclides was ~115 mg g -1 . Thermodynamic parameters showe

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Author

Amr M. Emara; Emad M. Elsharma; Islam M. Abdelmonem

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Materials Science (Physical Sciences)