Laysandra, Livy, Santosa, Felix Harijaya, Austen, Vic, Soetaredjo, Felycia Edi, Foe, Kuncoro, Putro, Jindrayani Nyoo, Ju, Yi-Hsu and Ismadji, Suryadi (2018) Rarasaponin-bentonite-activated biochar from durian shells composite for removal of crystal violet and Cr (VI) from aqueous solution. Environmental Science and Pollution Research, 25 (30). pp. 30680-30695. ISSN 09441344, 09441344
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Abstract
This paper presents the preparation of composite material and its application for the adsorption of crystal violet and Cr(VI) from aqueous solution onto acid-activated bentonite (AAB) and rarasaponin–bentonite-activated biochar from durian shells composite (RBAB). The influence of initial pH of the solution and the temperature of adsorption on the adsorbents adsorption performance was also studied. Langmuir and Freundlich models could represent the adsorption equilibria equally well. Thermodynamic parameters such as ΔG°, ΔH°, and ΔS° were evaluated based on the adsorption isotherms. The values of ΔG°, ΔH°, and ΔS° for crystal violet adsorption system demonstrate behavior contrary to the Cr(VI) adsorption system. Where crystal violet adsorption is preferred at high temperatures with q , value is 518.64 mg/L; while adsorption Cr(VI) is better at low temperature with qmax max , value is 106.30 mg/L. Pseudo-first-order and pseudo-second-order kinetic models could represent the kinetic data well
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Rarasaponin Raw durian Biochar Composite Isotherms Kinetics Adsorption |
| Subjects: | Pharmacy |
| Divisions: | Journal Publication |
| Depositing User: | F.X. Hadi |
| Date Deposited: | 24 Sep 2025 04:32 |
| Last Modified: | 24 Sep 2025 04:32 |
| URI: | https://repositori.ukwms.ac.id/id/eprint/44525 |
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