Iron slag/activated carbon-electrokinetic system with anolyte recycling for single and mixture heavy metals remediation
The electrokinetic process has been proposed for in-situ soil remediation to minimize excavation work and exposure to hazardous materials. The precipitation of heavy metals in alkaline pH near the cathode is still challenging. Reactive filter media and enhancement agents have been used in electrokin...
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| مؤلفون آخرون: | , , , , , , |
| التنسيق: | article |
| منشور في: |
2024
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| الموضوعات: | |
| الوصول للمادة أونلاين: | http://dx.doi.org/10.1016/j.scitotenv.2024.172516 https://www.sciencedirect.com/science/article/pii/S0048969724026627 http://hdl.handle.net/10576/64344 |
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| _version_ | 1857415085749698560 |
|---|---|
| author | Hamdi, Faris M. |
| author2 | Altaee, Ali Alsaka, Lilyan Ibrar, Ibrar AL-Ejji, Maryam Zhou, John Samal, Akshaya K. Hawari, Alaa H. |
| author2_role | author author author author author author author |
| author_facet | Hamdi, Faris M. Altaee, Ali Alsaka, Lilyan Ibrar, Ibrar AL-Ejji, Maryam Zhou, John Samal, Akshaya K. Hawari, Alaa H. |
| author_role | author |
| dc.creator.none.fl_str_mv | Hamdi, Faris M. Altaee, Ali Alsaka, Lilyan Ibrar, Ibrar AL-Ejji, Maryam Zhou, John Samal, Akshaya K. Hawari, Alaa H. |
| dc.date.none.fl_str_mv | 2024-06-20 2025-04-21T05:23:11Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://dx.doi.org/10.1016/j.scitotenv.2024.172516 00489697 https://www.sciencedirect.com/science/article/pii/S0048969724026627 http://hdl.handle.net/10576/64344 930 1879-1026 |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Electrokinetic Anolyte recirculation Soil remediation Iron slag Reactive filter media |
| dc.title.none.fl_str_mv | Iron slag/activated carbon-electrokinetic system with anolyte recycling for single and mixture heavy metals remediation |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | The electrokinetic process has been proposed for in-situ soil remediation to minimize excavation work and exposure to hazardous materials. The precipitation of heavy metals in alkaline pH near the cathode is still challenging. Reactive filter media and enhancement agents have been used in electrokinetics to enhance the removal of heavy metals. This study investigated coupling industrial iron slag waste and iron slag-activated carbon reactive filter media with electrokinetic for a single and mixture of heavy metals treatment. Instead of using acid enhancement agents, the anolyte solution was recycled to neutralize the alkaline front at the cathode, reducing the operation cost and chemical use. Experiments were conducted for 2 and 3 weeks at 20 mA electric current. Copper removal increased from 3.11 % to 23 % when iron slag reactive filter media was coupled with electrokinetic. Copper removal increased to 70.14 % in the electrokinetic experiment with iron slag-activated carbon reactive filter media. The copper removal increased to 89.21 % when the anolyte solution was recycled to the cathode compartment. Copper removal reached 93.45 % when the reactive filter media-electrokinetic process with anolyte recirculation was extended to 3 weeks. The reactive filter media- an electrokinetic process with anolyte recycling was evaluated for removing copper, nickel, and zinc mixture, and results revealed 81.1 % copper removal, 89.04 % nickel removal, and 92.31 % zinc removal in a 3-week experiment. The greater nickel and zinc removal is attributed to their higher solubility than copper. The results demonstrated the cost-effectiveness and efficiency of the electrokinetic with iron slag-activated carbon reactive filter media with anolyte recirculation for soil remediation from heavy metals. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | qu_91cea94731ef174bcda8f26e37efc721 |
| identifier_str_mv | 00489697 930 1879-1026 |
| language_invalid_str_mv | en |
| network_acronym_str | qu |
| network_name_str | Qatar University repository |
| oai_identifier_str | oai:qspace.qu.edu.qa:10576/64344 |
| publishDate | 2024 |
| publisher.none.fl_str_mv | Elsevier |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| spelling | Iron slag/activated carbon-electrokinetic system with anolyte recycling for single and mixture heavy metals remediationHamdi, Faris M.Altaee, AliAlsaka, LilyanIbrar, IbrarAL-Ejji, MaryamZhou, JohnSamal, Akshaya K.Hawari, Alaa H.ElectrokineticAnolyte recirculationSoil remediationIron slagReactive filter mediaThe electrokinetic process has been proposed for in-situ soil remediation to minimize excavation work and exposure to hazardous materials. The precipitation of heavy metals in alkaline pH near the cathode is still challenging. Reactive filter media and enhancement agents have been used in electrokinetics to enhance the removal of heavy metals. This study investigated coupling industrial iron slag waste and iron slag-activated carbon reactive filter media with electrokinetic for a single and mixture of heavy metals treatment. Instead of using acid enhancement agents, the anolyte solution was recycled to neutralize the alkaline front at the cathode, reducing the operation cost and chemical use. Experiments were conducted for 2 and 3 weeks at 20 mA electric current. Copper removal increased from 3.11 % to 23 % when iron slag reactive filter media was coupled with electrokinetic. Copper removal increased to 70.14 % in the electrokinetic experiment with iron slag-activated carbon reactive filter media. The copper removal increased to 89.21 % when the anolyte solution was recycled to the cathode compartment. Copper removal reached 93.45 % when the reactive filter media-electrokinetic process with anolyte recirculation was extended to 3 weeks. The reactive filter media- an electrokinetic process with anolyte recycling was evaluated for removing copper, nickel, and zinc mixture, and results revealed 81.1 % copper removal, 89.04 % nickel removal, and 92.31 % zinc removal in a 3-week experiment. The greater nickel and zinc removal is attributed to their higher solubility than copper. The results demonstrated the cost-effectiveness and efficiency of the electrokinetic with iron slag-activated carbon reactive filter media with anolyte recirculation for soil remediation from heavy metals.The author would like to thank the Ministry of Government of Saudi Arabia for providing scholarship support to Faris M. Hamdi. This research is made possible by a food security research award (MME03-1015-210003) from the Qatar National Research Fund (QNRF) in partnership with the Ministry of Municipality. The statements made herein are solely the responsibility of the authors.Elsevier2025-04-21T05:23:11Z2024-06-20Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1016/j.scitotenv.2024.17251600489697https://www.sciencedirect.com/science/article/pii/S0048969724026627http://hdl.handle.net/10576/643449301879-1026enhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:qspace.qu.edu.qa:10576/643442025-04-21T19:05:43Z |
| spellingShingle | Iron slag/activated carbon-electrokinetic system with anolyte recycling for single and mixture heavy metals remediation Hamdi, Faris M. Electrokinetic Anolyte recirculation Soil remediation Iron slag Reactive filter media |
| status_str | publishedVersion |
| title | Iron slag/activated carbon-electrokinetic system with anolyte recycling for single and mixture heavy metals remediation |
| title_full | Iron slag/activated carbon-electrokinetic system with anolyte recycling for single and mixture heavy metals remediation |
| title_fullStr | Iron slag/activated carbon-electrokinetic system with anolyte recycling for single and mixture heavy metals remediation |
| title_full_unstemmed | Iron slag/activated carbon-electrokinetic system with anolyte recycling for single and mixture heavy metals remediation |
| title_short | Iron slag/activated carbon-electrokinetic system with anolyte recycling for single and mixture heavy metals remediation |
| title_sort | Iron slag/activated carbon-electrokinetic system with anolyte recycling for single and mixture heavy metals remediation |
| topic | Electrokinetic Anolyte recirculation Soil remediation Iron slag Reactive filter media |
| url | http://dx.doi.org/10.1016/j.scitotenv.2024.172516 https://www.sciencedirect.com/science/article/pii/S0048969724026627 http://hdl.handle.net/10576/64344 |