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Polyethylenimine-aminated polyvinyl chloride fiber for adsorption of reactive dyes from single and binary component systems: Adsorption kinetics and isotherm studies

Authors
Wang, ZhuoBin Kang, SuWon, Sung Wook
Issue Date
20-Aug-2022
Publisher
Elsevier BV
Keywords
Reactive dye; Adsorption; Kinetics; Isotherm; Binary-component system; Reusability
Citation
Colloids and Surfaces A: Physicochemical and Engineering Aspects, v.647
Indexed
SCIE
SCOPUS
Journal Title
Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume
647
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/948
DOI
10.1016/j.colsurfa.2022.128983
ISSN
0927-7757
1873-4359
Abstract
In this study, a polyethylenimine-aminated polyvinyl chloride fiber (PEI-PVCF) was prepared, which exhibited excellent adsorption properties for Reactive Black 5 (RB5) and Reactive Orange 16 (RO16) from single-and binary-component systems under neutral conditions. The pH edge, kinetic, isotherm, and thermodynamic experiments were conducted to evaluate the adsorption performance of PEI-PVCF for RB5 and RO16. The effect of coexisting ions on the removal of reactive dyes by PEI-PVCF was also investigated. The regeneration experiment was performed to evaluate the reusability of PEI-PVCF for reactive dyes removal. The results were as follows: The PEI-PVCF showed high removal efficiency for RB5 and RO16 in a wide range of pH (2-8). Kinetic modeling suggested that chemisorption plays an essential role in the adsorption process. The intraparticle diffusion model revealed that intraparticle diffusion was not the only rate-controlling step. The isotherm models showed that the adsorption of PEI-PVCF for RB5 and RO16 was monolayer adsorption, and the PEI-PVCF had a higher affinity for RB5 than RO16. The maximum adsorption capacities of PEI-PVCF for RB5 and RO16 calculated by the Sips model were 1265.0 and 1171.5 mg/g in single-component systems, and 932.3 and 473.4 mg/g in binary-component systems, respectively. Thermodynamic experiments results revealed that the adsorption process was exothermic. The adsorption mechanism study revealed that electrostatic interaction and H-bonding were the main mechanisms involved in the adsorption process. The inhibition effect of coexisting ions on the adsorption of RO16 by PEI-PVCF was more significant than that on RB5. In addition, the reusability study depicted that the PEI-PVCF can be reused at least five times. These results indicated that the PEI-PVCF has good potential in industrial applications.
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해양과학대학 (해양환경공학과)
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