Strategies for the sustainable practice of electrokinetic technology: The case of mixed contaminants in a clayey soil
Electrokinetic (EK) remediation is a developing technology for treating a wide range of organic and inorganic contaminants from soil. One aspect of a sustainable remediation is to be economically viable. Various strategies have been used for evaluating the energy consumption and costs in the EK proc...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-07-01
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| Series: | Cleaner Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666790821000902 |
| _version_ | 1819064758855270400 |
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| author | Sedigheh Mohamadi Mohsen Saeedi Afsaneh Mollahosseini |
| author_facet | Sedigheh Mohamadi Mohsen Saeedi Afsaneh Mollahosseini |
| author_sort | Sedigheh Mohamadi |
| collection | DOAJ |
| description | Electrokinetic (EK) remediation is a developing technology for treating a wide range of organic and inorganic contaminants from soil. One aspect of a sustainable remediation is to be economically viable. Various strategies have been used for evaluating the energy consumption and costs in the EK process. This study investigated the effect of voltage gradient (1.0 and 2.0 V cm−1), pH controlling, and duration time (7 and 15 days) on contaminants distribution and energy consumption during EK. An alkaline clayey soil was artificially contaminated with lead, zinc, nickel, and phenanthrene. Increasing voltage and controlling pH was ineffective on the mobility of mixed contaminants as they increased soil resistivity. Controlling pH accounted for 70% of the increasing total energy consumption (1521.65 kWh m−3) and failed to mitigate soil contamination. Brij 35 worked better than Tween 80 in the transportation of the target contaminants in the clayey soil. By Brij 35, 32% of total contaminants were removed from the studied soil with an optimal energy consumption of 892.8 kWh m−3. The strategies of increasing voltage gradient and pH control are not recommended for EK remediation of alkaline clayey soils. |
| first_indexed | 2024-12-21T15:35:40Z |
| format | Article |
| id | doaj.art-bccc9825db304c74ab3ecb7c8b2786a2 |
| institution | Directory Open Access Journal |
| issn | 2666-7908 |
| language | English |
| last_indexed | 2024-12-21T15:35:40Z |
| publishDate | 2021-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cleaner Engineering and Technology |
| spelling | doaj.art-bccc9825db304c74ab3ecb7c8b2786a22022-12-21T18:58:38ZengElsevierCleaner Engineering and Technology2666-79082021-07-013100130Strategies for the sustainable practice of electrokinetic technology: The case of mixed contaminants in a clayey soilSedigheh Mohamadi0Mohsen Saeedi1Afsaneh Mollahosseini2Environmental Research Laboratory, School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran; Corresponding author.Environmental Research Laboratory, School of Civil Engineering, Iran University of Science and Technology, Tehran, IranResearch Laboratory of Spectroscopy & Micro and Nano-extraction, Department of Chemistry, Iran University of Science and Technology, Tehran, IranElectrokinetic (EK) remediation is a developing technology for treating a wide range of organic and inorganic contaminants from soil. One aspect of a sustainable remediation is to be economically viable. Various strategies have been used for evaluating the energy consumption and costs in the EK process. This study investigated the effect of voltage gradient (1.0 and 2.0 V cm−1), pH controlling, and duration time (7 and 15 days) on contaminants distribution and energy consumption during EK. An alkaline clayey soil was artificially contaminated with lead, zinc, nickel, and phenanthrene. Increasing voltage and controlling pH was ineffective on the mobility of mixed contaminants as they increased soil resistivity. Controlling pH accounted for 70% of the increasing total energy consumption (1521.65 kWh m−3) and failed to mitigate soil contamination. Brij 35 worked better than Tween 80 in the transportation of the target contaminants in the clayey soil. By Brij 35, 32% of total contaminants were removed from the studied soil with an optimal energy consumption of 892.8 kWh m−3. The strategies of increasing voltage gradient and pH control are not recommended for EK remediation of alkaline clayey soils.http://www.sciencedirect.com/science/article/pii/S2666790821000902Sustainable remediationElectrokineticSurfactantpH controlSoil pollution |
| spellingShingle | Sedigheh Mohamadi Mohsen Saeedi Afsaneh Mollahosseini Strategies for the sustainable practice of electrokinetic technology: The case of mixed contaminants in a clayey soil Cleaner Engineering and Technology Sustainable remediation Electrokinetic Surfactant pH control Soil pollution |
| title | Strategies for the sustainable practice of electrokinetic technology: The case of mixed contaminants in a clayey soil |
| title_full | Strategies for the sustainable practice of electrokinetic technology: The case of mixed contaminants in a clayey soil |
| title_fullStr | Strategies for the sustainable practice of electrokinetic technology: The case of mixed contaminants in a clayey soil |
| title_full_unstemmed | Strategies for the sustainable practice of electrokinetic technology: The case of mixed contaminants in a clayey soil |
| title_short | Strategies for the sustainable practice of electrokinetic technology: The case of mixed contaminants in a clayey soil |
| title_sort | strategies for the sustainable practice of electrokinetic technology the case of mixed contaminants in a clayey soil |
| topic | Sustainable remediation Electrokinetic Surfactant pH control Soil pollution |
| url | http://www.sciencedirect.com/science/article/pii/S2666790821000902 |
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