Fitriana, Dina and Mudasir, Mudasir and Siswanta, Dwi (2020) Adsorption of Pb(II) from aqueous solutions on dithizone-immobilized coal fly ash. Key Engineering Materials, 840 KE. 57 – 63. ISSN 10139826
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Adsorption of Pb(II) ions onto selective adsorbent of dithizone-immobilized coal fly ash (DCFA) from Holcim, Cilacap, Indonesia has been investigated in batch experiments. Prepared coal fly ash (CFA) modified by immobilization of dithizone previously were characterized by FT-IR and XRD. Several parameters influencing the adsorption of Pb(II) ions such as effect of pH, adsorbent dosage, contact time and initial concentration of ions on the efficiency of the adsorption were studied. The optimum condition of Pb(II) adsorption was found at pH 5, adsorbent dosage 0.1 g, contact time 60 min and initial Pb(II) ions concentration of 60 mg L-1. The adsorption kinetics of Pb(II) ions on DCFA was found to follow a pseudo-second-order kinetic model. The adsorption isotherm data were fitted to the Langmuir model. Kinetics and adsorption isotherm studies suggest that the capacity and affinity of the DCFA in adsorbing Pb(II) ions is significantly improved compared to those of non-immobilized activated coal fly ash (ACFA). © 2020 Trans Tech Publications Ltd, Switzerland.
Item Type: | Article |
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Additional Information: | Cited by: 4; Conference name: 5th International Conference on Science and Technology, ICST 2019; Conference date: 30 July 2019 through 31 July 2019; Conference code: 239689 |
Uncontrolled Keywords: | Adsorption; Adsorption isotherms; Coal; Coal ash; Fly ash; Ions; Kinetics; Adsorbent dosage; Adsorption kinetics; Adsorption of pb; Batch experiments; Initial concentration; Optimum conditions; Pseudo-second-order kinetic models; Selective adsorbents; Lead compounds |
Subjects: | Q Science > QD Chemistry |
Divisions: | Faculty of Mathematics and Natural Sciences > Chemistry Department |
Depositing User: | Sri JUNANDI |
Date Deposited: | 19 May 2025 07:49 |
Last Modified: | 19 May 2025 07:49 |
URI: | https://ir.lib.ugm.ac.id/id/eprint/16966 |