Gomes, HI, Jones, A, Rogerson, M et al. (4 more authors) (2017) Removal and recovery of vanadium from alkaline steel slag leachates with anion exchange resins. Journal of Environmental Management, 187. pp. 384-392. ISSN 0301-4797
Abstract
Leachable vanadium (V) from steel production residues poses a potential environmental hazard due to its mobility and toxicity under the highly alkaline pH conditions that characterise these leachates. This work aims to test the efficiency of anion exchange resins for vanadium removal and recovery from steel slag leachates at a representative average pH of 11.5. Kinetic studies were performed to understand the vanadium sorption process. The sorption kinetics were consistent with a pseudo-first order kinetic model. The isotherm data cannot differentiate between the Langmuir and Freundlich models. The maximum adsorption capacity (Langmuir value qmax) was 27 mg V g−1 resin. In column anion exchange, breakthrough was only 14% of the influent concentration after passing 90 L of steel slag leachate with 2 mg L−1 V through the column. When eluting the column 57–72% of vanadium was recovered from the resin with 2 M NaOH. Trials on the reuse of the anion exchange resin showed it could be reused 20 times without loss of efficacy, and on average 69% of V was recovered during regeneration. The results document for the first time the use of anion exchange resins to remove vanadium from steel slag leachate. As an environmental contaminant, removal of V from leachates may be an obligation for long-term management requirements of steel slag repositories. Vanadium removal coupled with the recovery can potentially be used to offset long-term legacy treatment costs.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
Keywords: | Metal recovery; Hyperalkaline drainage; Recycling; Environmental remediation; Ion exchange resin |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Earth Surface Science Institute (ESSI) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Nov 2016 15:57 |
Last Modified: | 23 Jun 2023 22:17 |
Published Version: | https://doi.org/10.1016/j.jenvman.2016.10.063 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.jenvman.2016.10.063 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:107442 |