LAPSE:2019.1339
Published Article
LAPSE:2019.1339
Chromium VI and Fluoride Competitive Adsorption on Different Soils and By-Products
Ana Quintáns-Fondo, Gustavo Ferreira-Coelho, Manuel Arias-Estévez, Juan Carlos Nóvoa-Muñoz, David Fernández-Calviño, Esperanza Álvarez-Rodríguez, María J. Fernández-Sanjurjo, Avelino Núñez-Delgado
December 10, 2019
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.
Keywords
Adsorption, chromium, competition, fluoride, soil and water pollution
Subject
Suggested Citation
Quintáns-Fondo A, Ferreira-Coelho G, Arias-Estévez M, Nóvoa-Muñoz JC, Fernández-Calviño D, Álvarez-Rodríguez E, Fernández-Sanjurjo MJ, Núñez-Delgado A. Chromium VI and Fluoride Competitive Adsorption on Different Soils and By-Products. (2019). LAPSE:2019.1339
Author Affiliations
Quintáns-Fondo A: Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Universidade de Santiago de Compostela, 27002 Lugo, Spain
Ferreira-Coelho G: Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Universidade de Santiago de Compostela, 27002 Lugo, Spain
Arias-Estévez M: Department of Plant Biology and Soil Science, Faculty of Sciences, Campus Ourense, Universidade de Vigo, 32004 Ourense, Spain [ORCID]
Nóvoa-Muñoz JC: Department of Plant Biology and Soil Science, Faculty of Sciences, Campus Ourense, Universidade de Vigo, 32004 Ourense, Spain [ORCID]
Fernández-Calviño D: Department of Plant Biology and Soil Science, Faculty of Sciences, Campus Ourense, Universidade de Vigo, 32004 Ourense, Spain [ORCID]
Álvarez-Rodríguez E: Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Universidade de Santiago de Compostela, 27002 Lugo, Spain
Fernández-Sanjurjo MJ: Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Universidade de Santiago de Compostela, 27002 Lugo, Spain [ORCID]
Núñez-Delgado A: Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Universidade de Santiago de Compostela, 27002 Lugo, Spain [ORCID]
Journal Name
Processes
Volume
7
Issue
10
Article Number
E748
Year
2019
Publication Date
2019-10-15
Published Version
ISSN
2227-9717
Version Comments
Original Submission
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PII: pr7100748, Publication Type: Journal Article
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LAPSE:2019.1339
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doi:10.3390/pr7100748
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Dec 10, 2019
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Dec 10, 2019
 
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Original Submitter
Calvin Tsay
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