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Article

Synthesis, Characterization of a New Polyacrylic Acid Superabsorbent, Some Heavy Metal Ion Sorption, the Adsorption Isotherms, and Quantum Chemical Investigation

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Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, University Avanue, 61080 Trabzon, Turkey
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Faculty of Engineering and Architecture, Ahi Evran University, 40100 Kırşehir, Turkey
*
Author to whom correspondence should be addressed.
Materials 2020, 13(19), 4390; https://doi.org/10.3390/ma13194390
Received: 3 July 2020 / Revised: 12 August 2020 / Accepted: 13 August 2020 / Published: 1 October 2020
(This article belongs to the Special Issue Synthesis, Characterization and Applications of Block Copolymers)
Poly(acrylic acid/Kryptofix 23-Dimethacrylate) superabsorbent polymer [P (AA/Kry23-DM) SAP] was synthesized by solution polymerization to remove Co, Ni, Cu, Cd, Mn, Zn, Pb, Cr, and Fe ions in water and improve the quality of the water. Kry23-DM cross-linker (1,4,7,13,16-Pentaoxa-10,19 diazo cyclohexene icosane di methacrylate) was synthesized using Kry23 and methacryloyl chloride. The characterization of the molecules was done by FTIR, TGA, DSC, and SEM techniques. The effects of parameters such as pH, concentration, and the metal ion interaction on the heavy metal ions uptaking of SAP was investigated. It was observed that P (AA/Kry23-DM) SAP has maximum water absorption, and the absorption increases with the pH increase. Adsorption rates and sorption capacity, desorption ratios, competitive sorption (qcs), and distribution coefficient (log D) of P(AA/Kry23-DM) SAP were studied as a function of time and pH with the heavy metal ion concentration. Langmuir and Freundlich isotherms of the P (AA/Kry23-DM) SAP were investigated to verify the metal uptake. Molecular mechanic (MM2), Assisted Model Building with Energy Refinement (AMBER), and optimized potentials for liquid simulations (OPLS) methods. were used in quantum chemical calculations for the conformational analysis of the cross-linker and the SAP. ΔH0f calculations of the cross-linker and the superabsorbent were made using Austin Model 1(AM1) method. View Full-Text
Keywords: polyacrylic acid superabsorbent polymer (PAA SAP); sorption capacity; swelling ratio; distribution ratio; Langmuir and Freundlich isotherms; conformational analysis polyacrylic acid superabsorbent polymer (PAA SAP); sorption capacity; swelling ratio; distribution ratio; Langmuir and Freundlich isotherms; conformational analysis
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MDPI and ACS Style

Savaskan Yilmaz, S.; Yildirim, N.; Misir, M.; Misirlioglu, Y.; Celik, E. Synthesis, Characterization of a New Polyacrylic Acid Superabsorbent, Some Heavy Metal Ion Sorption, the Adsorption Isotherms, and Quantum Chemical Investigation. Materials 2020, 13, 4390. https://doi.org/10.3390/ma13194390

AMA Style

Savaskan Yilmaz S, Yildirim N, Misir M, Misirlioglu Y, Celik E. Synthesis, Characterization of a New Polyacrylic Acid Superabsorbent, Some Heavy Metal Ion Sorption, the Adsorption Isotherms, and Quantum Chemical Investigation. Materials. 2020; 13(19):4390. https://doi.org/10.3390/ma13194390

Chicago/Turabian Style

Savaskan Yilmaz, Sevil, Nuri Yildirim, Murat Misir, Yasin Misirlioglu, and Emre Celik. 2020. "Synthesis, Characterization of a New Polyacrylic Acid Superabsorbent, Some Heavy Metal Ion Sorption, the Adsorption Isotherms, and Quantum Chemical Investigation" Materials 13, no. 19: 4390. https://doi.org/10.3390/ma13194390

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