dc.contributor |
Háskóli Íslands |
dc.contributor |
University of Iceland |
dc.contributor.author |
Dietmann, Karen Maria |
dc.contributor.author |
Linke, Tobias |
dc.contributor.author |
Miguel |
dc.contributor.author |
Pérez Pavón, José Luis |
dc.contributor.author |
Rives, Vicente |
dc.date.accessioned |
2021-01-12T15:44:51Z |
dc.date.available |
2021-01-12T15:44:51Z |
dc.date.issued |
2020-05-20 |
dc.identifier.citation |
Dietmann, K.M.; Linke, T.; Nogal Sánchez, M.; Pérez Pavón, J.L.; Rives, V. Layered Double Hydroxides with Intercalated Permanganate and Peroxydisulphate Anions for Oxidative Removal of Chlorinated Organic Solvents Contaminated Water. Minerals 2020, 10, 462. |
dc.identifier.issn |
2075-163X |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/2357 |
dc.description |
Publisher's version (útgefin grein) |
dc.description.abstract |
The contamination by chlorinated organic solvents is a worldwide problem as they can deeply penetrate aquifers, accumulating in the sub-surface as lenses of highly hazardous pollutants. In recent years, so called in situ oxidation processes have been developed to remediate chlorinated organic solvents from groundwater and soil by injecting solutions of oxidising agents such as permanganate or peroxydisulphate. We here present modified layered double hydroxides (LDHs) with intercalated oxidising agents that might serve as new reactants for these remediation strategies. LDHs might serve as support and stabiliser materials for selected oxidising agents during injection, as the uncontrolled reaction and consumption might be inhibited, and guarantee that the selected oxidants persist in the subsurface after injection. In this study, LDHs with hydrotalciteand hydrocalumite-like structures intercalated with permanganate and peroxydisulphate anions were synthesised and their efficiency was tested in batch experiments using trichloroethene or 1,1,2-trichloroethane as the target contaminants. All samples were characterised using powder X-ray diffraction, thermal analysis coupled with mass spectrometry to directly analyse evolving gases, and Fourier-transform infrared spectroscopy. Additionally, particle size distribution measurements were carried out on the synthesised materials. Results of the batch experiments confirmed the hypothesis that oxidising agents keep their properties after intercalation. Permanganate intercalated LDHs proved to be most efficient at degrading trichloroethene while peroxydisulphate intercalated Ca,Al-LDHs were the most promising studied reactants degrading 1,1,2-trichloroethane. The detection of dichloroethene as well as the transformation of the studied reactants into new LDH phases confirmed the successful degradation of the target contaminant by oxidation processes generated from the intercalated oxidising agent. |
dc.description.sponsorship |
This study is part of the project Metal-Aid, which has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Skłodowska-Curie Grant Agreement No. 675219. For more information, see http://metal-aid.eu/. |
dc.format.extent |
462 |
dc.language.iso |
en |
dc.publisher |
MDPI AG |
dc.relation |
info:eu-repo/grantAgreement/EC/H2020/675219 |
dc.relation.ispartofseries |
Minerals;10(5) |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Hydrocalumite |
dc.subject |
LDHs |
dc.subject |
Oxidizing agents |
dc.subject |
Oxun |
dc.subject |
Jarðvegsfræði |
dc.title |
Layered Double Hydroxides with Intercalated Permanganate and Peroxydisulphate Anions for Oxidative Removal of Chlorinated Organic Solvents Contaminated Water |
dc.type |
info:eu-repo/semantics/article |
dcterms.license |
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 |
dc.description.version |
Peer Reviewed |
dc.identifier.journal |
Minerals |
dc.identifier.doi |
10.3390/min10050462 |
dc.relation.url |
https://www.mdpi.com/2075-163X/10/5/462/pdf |
dc.contributor.department |
Jarðvísindastofnun (HÍ) |
dc.contributor.department |
Institute of Earth Sciences (UI) |
dc.contributor.school |
Verkfræði- og náttúruvísindasvið (HÍ) |
dc.contributor.school |
School of Engineering and Natural Sciences (UI) |