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dc.contributor.authorQuintáns Fondo, Ana
dc.contributor.authorCoelho, Gustavo Ferreira
dc.contributor.authorArias Estévez, Manuel
dc.contributor.authorNóvoa Muñoz, Juan Carlos
dc.contributor.authorFernández Calviño, David
dc.contributor.authorÁlvarez Rodríguez, Esperanza
dc.contributor.authorFernández Sanjurjo, María José
dc.contributor.authorNúñez Delgado, Avelino
dc.date.accessioned2020-04-01T08:44:14Z
dc.date.available2020-04-01T08:44:14Z
dc.date.issued2019
dc.identifier.citationQuintáns-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
dc.identifier.urihttp://hdl.handle.net/10347/21042
dc.description.abstractChromium (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
dc.description.sponsorshipThis research was funded by the SPANISH MINISTRY OF ECONOMY AND COMPETITIVENESS by means of the research projects CGL2012-36805-C02-01 and CGL2012-36805-C02-02. It was also partially financed by the European Regional Development Fund (FEDER in Spain)
dc.language.isoeng
dc.publisherMDPI
dc.rights© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAdsorption
dc.subjectChromium
dc.subjectCompetition
dc.subjectFluoride
dc.subjectSoil and water pollution
dc.titleChromium VI and Fluoride Competitive Adsorption on Different Soils and By-Products
dc.typeinfo:eu-repo/semantics/article
dc.identifier.DOI10.3390/pr7100748
dc.relation.publisherversionhttps://doi.org/10.3390/pr7100748
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.e-issn2227-9717
dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.contributor.affiliationUniversidade de Santiago de Compostela. Departamento de Edafoloxía e Química Agrícola
dc.description.peerreviewedSI


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© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/)
Except where otherwise noted, this item's license is described as  © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/)





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