Trilestari, Kiki and Vincentius Ochies A. S., . (2008) Research Project Report removal of chromium (VI) from aqueous solutions by durian shell. Project Report (PKL, PKIPP, Magang D3, Praktik Kerja Profesi Apoteker, Profesi Guru, Profesi Ners dan Profesi Insiyur). Widya Mandala Chatolic University Surabaya. (Unpublished)
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Abstract
Direct discharge of waste and wastewater onto river and ground surface by most industry are still the main practice attributable to the economic constraints and lack of adaptable technology. To that end, leftover durian shells which are commonly available in large quantity without any further economic value are highlighted here to verify their potential employment as adsorbent so that they can be used further instead of ending as a merely waste. The purpose of this research is to study the adsorption capacity, isotherm adsorption kinetics, thermodynamics and biosorption mechanism of Chromium (VI) using durian shell. Isothermal experiments were carried out at four different temperatures and three different pH. Langmuir and Freundlich models fit the equilibrium data quite well (R2 > 0.99). On modeling its kinetics data, pseudo-second order model represents the system better than pseudo-first order model. Thermodynamically, the adsorption process was spontaneous, endothermic and irreversible. The characterization results suggest that chemisorption is the dominant mechanism in preference to physical sorption.
| Item Type: | Monograph (Project Report (PKL, PKIPP, Magang D3, Praktik Kerja Profesi Apoteker, Profesi Guru, Profesi Ners dan Profesi Insiyur)) |
|---|---|
| Department: | ["eprint_fieldopt_department_faculty of engineering" not defined] |
| Subjects: | Engineering > Chemical Engineering |
| Divisions: | Faculty of Engineering > Chemical Engineering Study Program |
| Depositing User: | Lucia Sukristini |
| Date Deposited: | 12 Jan 2015 07:06 |
| Last Modified: | 25 Feb 2015 05:32 |
| URI: | http://repository.ukwms.ac.id/id/eprint/724 |
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