Adsorption Isotherm Studies on Acid Orange-10 Dye Removal using Cerium Dioxide Nanoparticles

https://doi.org/10.22146/ijc.21232

Harry Budiman(1), Oman Zuas(2*)

(1) Research Centre for Chemistry, Indonesian Institute of Science (RCChem-LIPI), Kawasan PUSPIPTEK Serpong, 15314 Tangerang, Banten
(2) Research Centre for Chemistry, Indonesian Institute of Science (RCChem-LIPI), Kawasan PUSPIPTEK Serpong, 15314 Tangerang, Banten
(*) Corresponding Author

Abstract


The adsorption capacity of AO-10 from aqueous solution onto CeO2-NPs was investigated under various reaction parameters. Batch mode experiments were conducted to assess the potential of the CeO2-NPs as adsorbent for the removal of AO-10 dye from aqueous solution. Equilibrium isotherm studies were carried out under an optimum reaction condition (i.e., AO-10 dye concentration = 15 mg/L, CeO2-NPS dosage = 2 g/L, pH of dye solution = 2) obtained from this study. The equilibrium data obtained were fitted to Langmuir, Freundlich, and Redlich-Peterson isotherm models. The results shows that, the linear transform model provided the highest regression coefficient (R2 = 0.991) with the Langmuir model. The maximum monolayer adsorption capacity was found to be 33.33 mg/g at 30 °C, which is higher than some data from published literature.

Keywords


dye; adsorption; isotherms; CeO2

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DOI: https://doi.org/10.22146/ijc.21232

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Indonesian Journal of Chemisty (ISSN 1411-9420 / 2460-1578) - Chemistry Department, Universitas Gadjah Mada, Indonesia.

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