Next Article in Journal
Evaluating Otto the Auto: Does Engagement in an Interactive Website Improve Young Children’s Transportation Safety?
Next Article in Special Issue
Removal of Arsenic (V) from Aqueous Solutions Using Chitosan–Red Scoria and Chitosan–Pumice Blends
Previous Article in Journal
Management Effectiveness of a Secondary Coniferous Forest for Landscape Appreciation and Psychological Restoration
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessCommunication
Int. J. Environ. Res. Public Health 2017, 14(7), 803; doi:10.3390/ijerph14070803

As(V) Sorption/Desorption on Different Waste Materials and Soil Samples

1
Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, University of Santiago de Compostela, 27002 Lugo, Spain
2
Department of Plant Biology and Soil Science, Faculty of Sciences, Campus Ourense, University of Vigo, 32004 Ourense, Spain
*
Author to whom correspondence should be addressed.
Received: 18 June 2017 / Revised: 12 July 2017 / Accepted: 17 July 2017 / Published: 19 July 2017
(This article belongs to the Special Issue Arsenic Contamination, Bioavailability and Public Health)
View Full-Text   |   Download PDF [1051 KB, uploaded 28 July 2017]   |  

Abstract

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. View Full-Text
Keywords: arsenic retention/release; hemp waste; mussel shell; oak ash; pine bark arsenic retention/release; hemp waste; mussel shell; oak ash; pine bark
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

Share & Cite This Article

MDPI and ACS Style

Quintáns-Fondo, A.; Fernández-Calviño, D.; Nóvoa-Muñoz, J.C.; Arias-Estévez, M.; Fernández-Sanjurjo, M.J.; Álvarez-Rodríguez, E.; Núñez-Delgado, A. As(V) Sorption/Desorption on Different Waste Materials and Soil Samples. Int. J. Environ. Res. Public Health 2017, 14, 803.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top