RT Journal Article
T1 As(V) Sorption/Desorption on Different Waste Materials and Soil Samples
A1 Quintáns Fondo, Ana
A1 Fernández Calviño, David
A1 Nóvoa Muñoz, Juan Carlos
A1 Arias Estévez, Manuel
A1 Fernández Sanjurjo, María J.
A1 Álvarez Rodríguez, Esperanza
A1 Núñez Delgado, Avelino
K1 Arsenic retention/release
K1 Hemp waste
K1 Mussel shell
K1 Oak ash
K1 Pine bark
AB Aiming to investigate the efficacy of different materials as bio-sorbents for the purification of As-polluted waters, batch-type experiments were employed to study As(V) sorption and desorption on oak ash, pine bark, hemp waste, mussel shell, pyritic material, and soil samples, as a function of the As(V) concentration added. Pyritic material and oak ash showed high sorption (90% and >87%) and low desorption (<2% and <7%). Alternatively, hemp waste showed low retention (16% sorption and 100% desorption of the amount previously sorbed), fine shell and pine bark sorbed <3% and desorbed 100%, the vineyard soil sample sorbed 8% and released 85%, and the forest soil sample sorbed 32% and desorbed 38%. Sorption data fitted well to the Langmuir and Freundlich models in the case of both soil samples and the pyritic material, but only to the Freundlich equation in the case of the various by-products. These results indicate that the pyritic material and oak ash can be considered efficient As(V) sorbents (thus, useful in remediation of contaminated sites and removal of that pollutant), even when As(V) concentrations up to 6 mmol L−1 are added, while the other materials that were tested cannot retain or remove As(V) from polluted media.
PB MDPI
YR 2017
FD 2017
LK http://hdl.handle.net/10347/22532
UL http://hdl.handle.net/10347/22532
LA eng
NO Quintáns-Fondo, A., Fernández-Calviño, D., Nóvoa-Muñoz, J. C., Arias-Estévez, M., Fernández-Sanjurjo, M. J., Álvarez-Rodríguez, E., & Núñez-Delgado, A. (2017). As (V) sorption/desorption on different waste materials and soil samples. International journal of environmental research and public health, 14(7), 803.
NO Funds received to perform this study: grant numbers CGL2012-36805-C02-01 andCGL2012-36805-C02-02 (Ministerio de Economía y Competitividad, Government of Spain). Also the European Regional Development Fund (ERDF) partially financed it
DS Minerva
RD 24 abr 2026