Amidation modified waste polystyrene foam as an efficient recyclable adsorbent for organic dyes removal

Modifying environmentally harmful waste polystyrene foam as an efficient recyclable adsorbent for organic dyes is important. Amidation modified polystyrene (PS-SD) was prepared by the Friedel-Crafts reaction and N,N'-dicyclohexylcarbodiimide (DCC) dehydration condensation reaction of waste poly...

Full description

Saved in:
Bibliographic Details
Published in:Water science and technology 2021-05, Vol.83 (9), p.2192-2206
Main Authors: Pu, Yanghao, Xie, Zhengfeng, Ye, Hao, Shi, Wei
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
amidation
Aqueous solutions
Color removal
Dehydration
Dicyclohexylcarbodiimide
Dopamine
Dyes
Energy consumption
Equilibrium
Experiments
Friedel-Crafts reaction
Handicrafts
Kinetics
Methylene blue
organic dyes
Pollutants
Polystyrene
Polystyrene resins
Reagents
Recyclability
Removal
Room temperature
waste polystyrene foam
Water analysis
Water sampling
Water treatment
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Modifying environmentally harmful waste polystyrene foam as an efficient recyclable adsorbent for organic dyes is important. Amidation modified polystyrene (PS-SD) was prepared by the Friedel-Crafts reaction and N,N'-dicyclohexylcarbodiimide (DCC) dehydration condensation reaction of waste polystyrene foam. PS-SD had highly efficient removal performance for organic dyes in large volume water sample solutions, and equilibrium was achieved in 0.5 h. The maximum adsorption capacities for Methylene blue (MB) and Congo red (CR) were 881.62 and 1,880.91 mg/g, respectively, at room temperature according to the Langmuir adsorption isotherm (R > 0.99). The kinetic data of the two dyes followed pseudo-second-order kinetics. The removal percentage remained high (>85%) after eight filtration-regeneration cycles. Experimental results showed that PS-SD was an excellent adsorbent for water treatment with high recyclability and long life.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2021.129