Adsorption of methyl orange onto protonated cross-linked chitosan
| Autor: | Ruihua Huang, Bingchao Yang, Jie Huo, Qian Liu |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Chemistry(all)
General Chemical Engineering Inorganic chemistry Kinetics Protonation 02 engineering and technology 010402 general chemistry 01 natural sciences Chitosan lcsh:Chemistry symbols.namesake chemistry.chemical_compound Adsorption Monolayer Methyl orange GeneralLiterature_REFERENCE(e.g. dictionaries encyclopedias glossaries) ComputingMilieux_MISCELLANEOUS Isotherm Aqueous solution Langmuir adsorption model General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Protonated cross-linked chitosan chemistry lcsh:QD1-999 symbols Chemical Engineering(all) 0210 nano-technology |
| Zdroj: | Arabian Journal of Chemistry, Vol 10, Iss 1, Pp 24-32 (2017) |
| ISSN: | 1878-5352 |
| DOI: | 10.1016/j.arabjc.2013.05.017 |
| Popis: | The adsorption of methyl orange (MO) from aqueous solutions on protonated cross-linked chitosan was studied in a batch system. The results showed that the adsorption of MO onto protonated cross-linked chitosan was affected significantly by initial MO concentration, adsorbent dosage, adsorption temperature, and contact time. The pH value of solution had a minor impact on the adsorption of MO in a pH range of 1.0–9.1. The equilibrium isotherms at different temperatures (293, 303, and 313 K) and pH values (4.5, 6.7, and 9.1) were investigated. Langmuir model was able to describe these Equilibrium data fitted perfectly. The maximum monolayer adsorption capacities obtained from the Langmuir model were 89.29, 130.9, and 180.2 mg/g at 293, 303, and 313 K, respectively. Adsorption kinetics at different concentrations (100, 200 and 300 mg/L) and pH values (4.5, 6.7 and 9.1) were also studied. The kinetics was correlated well with the pseudo second-order model. |
| Databáze: | OpenAIRE |
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