Coupled Electrokinetics-Adsorption Technique for Simultaneous Removal of Heavy Metals and Organics from Saline-Sodic Soil
In situ remediation technologies for contaminated soils are faced with significant technical challenges when the contaminated soil has low permeability. Popular traditional technologies are rendered ineffective due to the difficulty encountered in accessing the contaminants as well as when employed...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2013/346910 |
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| author | Salihu Lukman Mohammed Hussain Essa Nuhu Dalhat Mu'azu Alaadin Bukhari |
| author_facet | Salihu Lukman Mohammed Hussain Essa Nuhu Dalhat Mu'azu Alaadin Bukhari |
| author_sort | Salihu Lukman |
| collection | DOAJ |
| description | In situ remediation technologies for contaminated soils are faced with significant technical challenges when the contaminated soil has low permeability. Popular traditional technologies are rendered ineffective due to the difficulty encountered in accessing the contaminants as well as when employed in settings where the soil contains mixed contaminants such as petroleum hydrocarbons, heavy metals, and polar organics. In this study, an integrated in situ remediation technique that couples electrokinetics with adsorption, using locally produced granular activated carbon from date palm pits in the treatment zones that are installed directly to bracket the contaminated soils at bench-scale, is investigated. Natural saline-sodic soil, spiked with contaminant mixture (kerosene, phenol, Cr, Cd, Cu, Zn, Pb, and Hg), was used in this study to investigate the efficiency of contaminant removal. For the 21-day period of continuous electrokinetics-adsorption experimental run, efficiency for the removal of Zn, Pb, Cu, Cd, Cr, Hg, phenol, and kerosene was found to reach 26.8, 55.8, 41.0, 34.4, 75.9, 92.49, 100.0, and 49.8%, respectively. The results obtained suggest that integrating adsorption into electrokinetic technology is a promising solution for removal of contaminant mixture from saline-sodic soils. |
| format | Article |
| id | doaj-art-50bce1e67098416a93541bc939536317 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-50bce1e67098416a93541bc9395363172025-02-03T01:09:24ZengWileyThe Scientific World Journal1537-744X2013-01-01201310.1155/2013/346910346910Coupled Electrokinetics-Adsorption Technique for Simultaneous Removal of Heavy Metals and Organics from Saline-Sodic SoilSalihu Lukman0Mohammed Hussain Essa1Nuhu Dalhat Mu'azu2Alaadin Bukhari3Department of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, P.O. Box 8632, Dhahran 31261, Saudi ArabiaDepartment of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, P.O. Box 8632, Dhahran 31261, Saudi ArabiaEnvironmental Engineering Department, University of Dammam, Dammam 31451, Saudi ArabiaDepartment of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, P.O. Box 8632, Dhahran 31261, Saudi ArabiaIn situ remediation technologies for contaminated soils are faced with significant technical challenges when the contaminated soil has low permeability. Popular traditional technologies are rendered ineffective due to the difficulty encountered in accessing the contaminants as well as when employed in settings where the soil contains mixed contaminants such as petroleum hydrocarbons, heavy metals, and polar organics. In this study, an integrated in situ remediation technique that couples electrokinetics with adsorption, using locally produced granular activated carbon from date palm pits in the treatment zones that are installed directly to bracket the contaminated soils at bench-scale, is investigated. Natural saline-sodic soil, spiked with contaminant mixture (kerosene, phenol, Cr, Cd, Cu, Zn, Pb, and Hg), was used in this study to investigate the efficiency of contaminant removal. For the 21-day period of continuous electrokinetics-adsorption experimental run, efficiency for the removal of Zn, Pb, Cu, Cd, Cr, Hg, phenol, and kerosene was found to reach 26.8, 55.8, 41.0, 34.4, 75.9, 92.49, 100.0, and 49.8%, respectively. The results obtained suggest that integrating adsorption into electrokinetic technology is a promising solution for removal of contaminant mixture from saline-sodic soils.http://dx.doi.org/10.1155/2013/346910 |
| spellingShingle | Salihu Lukman Mohammed Hussain Essa Nuhu Dalhat Mu'azu Alaadin Bukhari Coupled Electrokinetics-Adsorption Technique for Simultaneous Removal of Heavy Metals and Organics from Saline-Sodic Soil The Scientific World Journal |
| title | Coupled Electrokinetics-Adsorption Technique for Simultaneous Removal of Heavy Metals and Organics from Saline-Sodic Soil |
| title_full | Coupled Electrokinetics-Adsorption Technique for Simultaneous Removal of Heavy Metals and Organics from Saline-Sodic Soil |
| title_fullStr | Coupled Electrokinetics-Adsorption Technique for Simultaneous Removal of Heavy Metals and Organics from Saline-Sodic Soil |
| title_full_unstemmed | Coupled Electrokinetics-Adsorption Technique for Simultaneous Removal of Heavy Metals and Organics from Saline-Sodic Soil |
| title_short | Coupled Electrokinetics-Adsorption Technique for Simultaneous Removal of Heavy Metals and Organics from Saline-Sodic Soil |
| title_sort | coupled electrokinetics adsorption technique for simultaneous removal of heavy metals and organics from saline sodic soil |
| url | http://dx.doi.org/10.1155/2013/346910 |
| work_keys_str_mv | AT salihulukman coupledelectrokineticsadsorptiontechniqueforsimultaneousremovalofheavymetalsandorganicsfromsalinesodicsoil AT mohammedhussainessa coupledelectrokineticsadsorptiontechniqueforsimultaneousremovalofheavymetalsandorganicsfromsalinesodicsoil AT nuhudalhatmuazu coupledelectrokineticsadsorptiontechniqueforsimultaneousremovalofheavymetalsandorganicsfromsalinesodicsoil AT alaadinbukhari coupledelectrokineticsadsorptiontechniqueforsimultaneousremovalofheavymetalsandorganicsfromsalinesodicsoil |