Adsorption of Chromium onto Activated Alumina: Kinetics and Thermodynamics Studies
Source: Water Environment Research, Volume 85, Number 2, February 2013 , pp. 99-104(6)
Publisher: Water Environment Federation
Abstract:In this study, the removal of chromium (VI) by adsorption on activated alumina was investigated and the results were fitted to Langmuir, Freundlich, Dubinin-Redushkevich, and Temkin adsorption models at various temperatures. The constants of each model were evaluated depending on temperature. Thermodynamic parameters for the adsorption system were determined at 10, 25 and 40°C. (ΔH° = −21.18 kJ.mol−1; ΔG° = −8.75 to −7.43 kJ.mol−1 and ΔS° = −0.043 kJ.K−1.mol−1). The obtained values showed that chromium (VI) adsorption is a spontaneous and exothermic process. The kinetic process was evaluated by first‐order, second‐order and Elovich kinetic models.
Document Type: Research Article
Publication date: 2013-02-01
- Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year. Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
- Editorial Board
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Membership Information
- Information for Advertisers
- WEF Bookstore
- ingentaconnect is not responsible for the content or availability of external websites