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Biodegradable composite adsorbent of modified cellulose and chitosan to remove heavy metal ions from aqueous solution
- Source :
- Current Research in Green and Sustainable Chemistry, Vol 4, Iss, Pp 100119-(2021)
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Chromium (Cr), Lead (Pb) and Cadmium (Cd) have been conceded as one of the most perilous heavy metals which causes a prominent affliction on both environment and human health. In this study, chemical modification of biodegradable, eco-friendly materials such as cellulose and chitosan were carried out to prepare a composite adsorbent and established an optimized condition for adsorption of heavy metal ions such as Cr, Pb and Cd from contaminated aqueous wastes. α-cellulose was treated with HCl and H2SO4 to have better adsorption properties. On the contrary, modification of chitosan was carried out by acetaldehyde solution and acetic acid. Composite adsorbent was obtained as a mixture, comprising of modified cellulose and chitosan in a specific proportion (2g:1g). The surface characteristics of treated cellulose, chitosan and composite sample were evaluated by FTIR and SEM analysis. In addition, batch adsorption experiments were carried out to measure the influences of pH of the solution, adsorbent dosage and the initial concentration of metal ions. The maximum removal efficiency of Cr, Pb and Cd by composites was 56, 85 and 94%, respectively, at pH 4 when the metal concentration and adsorbent dosage were 60 ppm and 1.0 g L−1. The maximum adsorption of Cr, Pb and Cd by composites was 55, 80 and 91 mg g−1, respectively, at pH 4 when the metal concentration and adsorbent dosage were 120 ppm and 1.0 g L−1.
- Subjects :
- Chitosan
Cadmium
Aqueous solution
Metal ions in aqueous solution
Adsorbent
Chemical modification
chemistry.chemical_element
Wastewater treatment
Chemistry
chemistry.chemical_compound
Chromium
Adsorption
Heavy metals
chemistry
Biodegradable composite
Materials Chemistry
Environmental Chemistry
Physical and Theoretical Chemistry
Cellulose
QD1-999
Nuclear chemistry
Subjects
Details
- ISSN :
- 26660865
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Current Research in Green and Sustainable Chemistry
- Accession number :
- edsair.doi.dedup.....8b449dd07cfc01d123cebc4fa4cd7b0f