Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI | http://purl.tuc.gr/dl/dias/6B1E922F-EC42-459D-B1DB-DBDDD3FAFED4 | - |
| Identifier | https://doi.org/10.1016/0043-1354(93)90116-Y | - |
| Identifier | https://www.sciencedirect.com/science/article/pii/004313549390116Y | - |
| Language | en | - |
| Extent | 5 pages | en |
| Title | As(V) removal from aqueous solutions by fly ash | en |
| Creator | Diamantopoulos Evaggelos | en |
| Creator | Διαμαντοπουλος Ευαγγελος | el |
| Creator | Ioannidis Socrates | en |
| Creator | Sakellaropoulos George P. | en |
| Publisher | Elsevier | en |
| Content Summary | The present work examines the possible use of fly ash, a by-product of coal power stations, as a means of removing arsenic (V) from water, or equivalently, of restricting its movement in the solid wastes or the soil. Kinetic and equilibrium experiments were performed in order to evaluate the removal efficiency of lignite-based fly ash. Both adsorption and desorption experiments were done at three pH levels, namely 4, 7 and 10. The results indicated that arsenic can be removed from water by fly ash, yet the degree of removal depended markedly on the pH. Removal at pH 4, as demonstrated by the adsorption isotherms, was significantly higher than that at the other two pH values. For 80% removal of arsenic, the solid phase concentration at pH 4 was up to 4 times greater than that at the other two pH levels. During the desorption studies only a small amount of the pre-adsorbed arsenic was released into the water. This amount was practically independent of the initial fly ash loading. This indicates that adsorption of arsenic on fly ash is almost irreversible and, therefore, there are good prospects for arsenic fixation on fly ash in practical applications. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2015-11-18 | - |
| Date of Publication | 1993 | - |
| Subject | Water conservation research | en |
| Subject | water conservation research | en |
| Bibliographic Citation | E. Diamadopoulos, S. Ioannidis and G. P. Sakellaropoulos, "As (V) removal from aqueous solutions by fly ash," Water Res., vol. 27, no. 12, pp. 1773-1777, Dec. 1993. doi:10.1016/0043-1354(93)90116-Y | en |
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