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Polyvinylсhloride‐based anion exchanger for efficient removal of chromium ( VI ) from aqueous solutions
Author(s) -
Bekchanov Davron,
Mukhamediev Mukhtar,
Lieberzeit Peter,
Babojonova Gulbakhor,
Botirov Sunnat
Publication year - 2021
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.5403
Subject(s) - hexavalent chromium , adsorption , aqueous solution , chromium , ion exchange , materials science , freundlich equation , chemisorption , nuclear chemistry , endothermic process , fourier transform infrared spectroscopy , inorganic chemistry , chemical engineering , ion , chemistry , organic chemistry , metallurgy , engineering
Chemical modification of plasticized polyvinylchloride with polyethylenepolyamine leads to anion exchange resin (PPE‐1). Different characterization techniques, such as XRD, FTIR, and SEM of PPE‐1 anion exchanger revealed weak base amino groups as well as macroporous structure morphology. PPE‐1 turned out effective to remove hexavalent chromium ions from aqueous media. Corresponding adsorption kinetics best fit the pseudo‐second order model that followed a Freundlich isotherm. In the case of hexavalent chromium ions, the maximum adsorption capacity of PPE‐1 was 218.4 mg/g. Thermodynamic data revealed spontaneous endothermic processes and a chemisorption reaction. In addition, results show that the anion exchanger (PPE‐1) has 98% for removing hexavalent chromium ions containing from wastewater.