Institutional Repository [SANDBOX]
Technical University of Crete
EN  |  EL

Search

Browse

My Space

As(V) removal from aqueous solutions by fly ash

Diamantopoulos Evaggelos, Ioannidis Socrates, Sakellaropoulos George P.

Simple record


URIhttp://purl.tuc.gr/dl/dias/6B1E922F-EC42-459D-B1DB-DBDDD3FAFED4-
Identifierhttps://doi.org/10.1016/0043-1354(93)90116-Y-
Identifierhttps://www.sciencedirect.com/science/article/pii/004313549390116Y-
Languageen-
Extent5 pagesen
TitleAs(V) removal from aqueous solutions by fly ashen
CreatorDiamantopoulos Evaggelosen
CreatorΔιαμαντοπουλος Ευαγγελοςel
CreatorIoannidis Socratesen
CreatorSakellaropoulos George P.en
PublisherElsevieren
Content SummaryThe 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 ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-11-18-
Date of Publication1993-
SubjectWater conservation researchen
Subjectwater conservation researchen
Bibliographic CitationE. 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-Yen

Services

Statistics