Combining Soil Vapor Extraction and Electrokinetics for the Removal of Hexachlorocyclohexanes from Soil
Abstract This paper focuses on the evaluation of the mobility of four hexachlorocyclohexane (HCH) isomers by soil vapor extraction (SVE) coupled with direct electrokinetic (EK) treatment without adding flushing fluids. SVE was found to be very efficient and remove nearly 70 % of the four HCH in the...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-05-01
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| Series: | ChemistryOpen |
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| Online Access: | https://doi.org/10.1002/open.202200022 |
| _version_ | 1797819973802917888 |
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| author | Dr. João M. M. Henrique Dr. Julia Isidro Prof. Cristina Saez Dr. Rúben Lopez‐Vizcaíno Prof. Angel Yustres Prof. Vicente Navarro Prof. Elisama V. Dos Santos Prof. Manuel A. Rodrigo |
| author_facet | Dr. João M. M. Henrique Dr. Julia Isidro Prof. Cristina Saez Dr. Rúben Lopez‐Vizcaíno Prof. Angel Yustres Prof. Vicente Navarro Prof. Elisama V. Dos Santos Prof. Manuel A. Rodrigo |
| author_sort | Dr. João M. M. Henrique |
| collection | DOAJ |
| description | Abstract This paper focuses on the evaluation of the mobility of four hexachlorocyclohexane (HCH) isomers by soil vapor extraction (SVE) coupled with direct electrokinetic (EK) treatment without adding flushing fluids. SVE was found to be very efficient and remove nearly 70 % of the four HCH in the 15‐days of the tests. The application of electrokinetics produced the transport of HCH to the cathode by different electrochemical processes, which were satisfactorily modelled with a 1‐D transport equation. The increase in the electric field led to an increase in the transport of pollutants, although 15 days was found to be a very short time for an efficient transportation of the pollutants to the nearness of the cathode. Loss of water content in the vicinity of the cathode warns about the necessity of using electrokinetic flushing technologies instead of simple direct electrokinetics. Thus, results point out that direct electrokinetic treatment without adding flushing fluids produced low current intensities and ohmic heating that contributes negatively to the performance of the SVE process. No relevant differences were found among the removal of the four isomers, neither in SVE nor in EK processes. |
| first_indexed | 2024-03-13T09:30:31Z |
| format | Article |
| id | doaj.art-bf81262594794488ad91363181e0f2a8 |
| institution | Directory Open Access Journal |
| issn | 2191-1363 |
| language | English |
| last_indexed | 2024-03-13T09:30:31Z |
| publishDate | 2023-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemistryOpen |
| spelling | doaj.art-bf81262594794488ad91363181e0f2a82023-05-26T04:02:37ZengWiley-VCHChemistryOpen2191-13632023-05-01125n/an/a10.1002/open.202200022Combining Soil Vapor Extraction and Electrokinetics for the Removal of Hexachlorocyclohexanes from SoilDr. João M. M. Henrique0Dr. Julia Isidro1Prof. Cristina Saez2Dr. Rúben Lopez‐Vizcaíno3Prof. Angel Yustres4Prof. Vicente Navarro5Prof. Elisama V. Dos Santos6Prof. Manuel A. Rodrigo7Postgraduate Program in Chemical Engineering School of Science and Technology Universidade Federal do Rio Grande do Norte Campus Universitário Lagoa Nova 59078-970 Natal/RN BrazilFaculty of Chemical Sciences & Technologies Department of Chemical Engineering Universidad de Castilla La Mancha Campus Universitario, s/n 13071 Ciudad Real SpainFaculty of Chemical Sciences & Technologies Department of Chemical Engineering Universidad de Castilla La Mancha Campus Universitario, s/n 13071 Ciudad Real SpainGeoenvironmental Group Civil Engineering School Universidad de Castilla La Mancha Avda. Camilo José Cela s/n 13071 Ciudad Real SpainGeoenvironmental Group Civil Engineering School Universidad de Castilla La Mancha Avda. Camilo José Cela s/n 13071 Ciudad Real SpainGeoenvironmental Group Civil Engineering School Universidad de Castilla La Mancha Avda. Camilo José Cela s/n 13071 Ciudad Real SpainPostgraduate Program in Chemical Engineering School of Science and Technology Universidade Federal do Rio Grande do Norte Campus Universitário Lagoa Nova 59078-970 Natal/RN BrazilFaculty of Chemical Sciences & Technologies Department of Chemical Engineering Universidad de Castilla La Mancha Campus Universitario, s/n 13071 Ciudad Real SpainAbstract This paper focuses on the evaluation of the mobility of four hexachlorocyclohexane (HCH) isomers by soil vapor extraction (SVE) coupled with direct electrokinetic (EK) treatment without adding flushing fluids. SVE was found to be very efficient and remove nearly 70 % of the four HCH in the 15‐days of the tests. The application of electrokinetics produced the transport of HCH to the cathode by different electrochemical processes, which were satisfactorily modelled with a 1‐D transport equation. The increase in the electric field led to an increase in the transport of pollutants, although 15 days was found to be a very short time for an efficient transportation of the pollutants to the nearness of the cathode. Loss of water content in the vicinity of the cathode warns about the necessity of using electrokinetic flushing technologies instead of simple direct electrokinetics. Thus, results point out that direct electrokinetic treatment without adding flushing fluids produced low current intensities and ohmic heating that contributes negatively to the performance of the SVE process. No relevant differences were found among the removal of the four isomers, neither in SVE nor in EK processes.https://doi.org/10.1002/open.202200022electric fieldelectrokinetichexachlorocyclohexanelindanesoil vapor extraction |
| spellingShingle | Dr. João M. M. Henrique Dr. Julia Isidro Prof. Cristina Saez Dr. Rúben Lopez‐Vizcaíno Prof. Angel Yustres Prof. Vicente Navarro Prof. Elisama V. Dos Santos Prof. Manuel A. Rodrigo Combining Soil Vapor Extraction and Electrokinetics for the Removal of Hexachlorocyclohexanes from Soil ChemistryOpen electric field electrokinetic hexachlorocyclohexane lindane soil vapor extraction |
| title | Combining Soil Vapor Extraction and Electrokinetics for the Removal of Hexachlorocyclohexanes from Soil |
| title_full | Combining Soil Vapor Extraction and Electrokinetics for the Removal of Hexachlorocyclohexanes from Soil |
| title_fullStr | Combining Soil Vapor Extraction and Electrokinetics for the Removal of Hexachlorocyclohexanes from Soil |
| title_full_unstemmed | Combining Soil Vapor Extraction and Electrokinetics for the Removal of Hexachlorocyclohexanes from Soil |
| title_short | Combining Soil Vapor Extraction and Electrokinetics for the Removal of Hexachlorocyclohexanes from Soil |
| title_sort | combining soil vapor extraction and electrokinetics for the removal of hexachlorocyclohexanes from soil |
| topic | electric field electrokinetic hexachlorocyclohexane lindane soil vapor extraction |
| url | https://doi.org/10.1002/open.202200022 |
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