Abstract
This work focused on fabricating a novel chitosan/polyvinyl alcohol/ hydroxyapatite (CPH) nanocomposite membrane and its application in removing the Congo red (CR) from aqueous solutions. After proper characterization of the chitosan/polyvinyl alcohol/hydroxyapatite adsorptive membrane, adsorption tests were carried out on the optimum nanocomposite membrane containing 1 wt% hydroxyapatite. The impact of temperature, contact time, initial dye concentration, adsorbent dosage, and pH was investigated. Results of isotherm and kinetic investigation revealed that Langmuir isotherm and pseudo-second order kinetics best fitted experimental results with R2 values of 0.995. A relatively high adsorption capacity of 491 mg/g, higher than that of activated carbon, was achieved.
Original language | English |
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Pages (from-to) | 4227-4242 |
Number of pages | 16 |
Journal | Polymer Composites |
Volume | 44 |
Issue number | 7 |
DOIs | |
Publication status | Published - Jul 2023 |
Keywords
- adsorption
- chitosan
- membranes
- nanocomposites
- separation techniques
ASJC Scopus subject areas
- Ceramics and Composites
- General Chemistry
- Polymers and Plastics
- Materials Chemistry