RT Journal Article
T1 Chromium VI and Fluoride Competitive Adsorption on Different Soils and By-Products
A1 Quintáns Fondo, Ana
A1 Coelho, Gustavo Ferreira
A1 Arias Estévez, Manuel
A1 Nóvoa Muñoz, Juan Carlos
A1 Fernández Calviño, David
A1 Álvarez Rodríguez, Esperanza
A1 Fernández Sanjurjo, María J.
A1 Núñez Delgado, Avelino
K1 Adsorption
K1 Chromium
K1 Competition
K1 Fluoride
K1 Soil and water pollution
AB Chromium (as Cr(VI)) and fluoride (F−) are frequently found in effluents from different industrial activities. In cases where these effluents reach soil, it can play an important role in retaining those pollutants. Similarly, different byproducts could act as bio-adsorbents to directly treat polluted waters or to enhance the purging potential of soil. In this work, we used batch-type experiments to study competitive Cr(VI) and F− adsorption in two different soils and several kinds of byproducts. Both soils, as well as mussel shell, oak ash, and hemp waste showed higher adsorption for F−, while pyritic material, pine bark, and sawdust had a higher affinity for Cr(VI). Considering the binary competitive system, a clear competition between both elements in anionic form is shown, with decreases in adsorption of up to 90% for Cr(VI), and of up to 30% for F−. Adsorption results showed better fitting to Freundlich’s than to Langmuir’s model. None of the individual soils or byproducts were able to adsorbing high percentages of both pollutants simultaneously, but it could be highly improved by adding pine bark to increase Cr(VI) adsorption in soils, thus drastically reducing the risks of pollution and deleterious effects on the environment and on public health
PB MDPI
YR 2019
FD 2019
LK http://hdl.handle.net/10347/21042
UL http://hdl.handle.net/10347/21042
LA eng
NO Quintáns-Fondo, A.; Ferreira-Coelho, G.; Arias-Estévez, M.; Nóvoa-Muñoz, J.C.; Fernández-Calviño, D.; Álvarez-Rodríguez, E.; Fernández-Sanjurjo, M.J.; Núñez-Delgado, A. Chromium VI and Fluoride Competitive Adsorption on Different Soils and By-Products. Processes 2019, 7, 748
NO This research was funded by the SPANISH MINISTRY OF ECONOMY AND COMPETITIVENESS bymeans of the research projects CGL2012-36805-C02-01 and CGL2012-36805-C02-02. It was also partially financedby the European Regional Development Fund (FEDER in Spain)
DS Minerva
RD 24 abr 2026