Using Modified Fly Ash for Removal of Heavy Metal Ions from Aqueous Solution
This paper presents the characteristics of fly ash which was modified by 2-mercaptobenzothiazole (MBT) and sodium dodecyl sulfate (SDS) as the surfactants after treating with 1M NaOH solution. The change in morphology, specific surface area, crystal structure, and composition of the unmodified and m...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2020/8428473 |
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| author | Thuy Chinh Nguyen Trang Do Mai Tran Van Bay Dao Quoc-Trung Vu Trinh Duy Nguyen Hoang Thai |
| author_facet | Thuy Chinh Nguyen Trang Do Mai Tran Van Bay Dao Quoc-Trung Vu Trinh Duy Nguyen Hoang Thai |
| author_sort | Thuy Chinh Nguyen |
| collection | DOAJ |
| description | This paper presents the characteristics of fly ash which was modified by 2-mercaptobenzothiazole (MBT) and sodium dodecyl sulfate (SDS) as the surfactants after treating with 1M NaOH solution. The change in morphology, specific surface area, crystal structure, and composition of the unmodified and modified fly ash was evaluated by FTIR, XRD, FESEM, BET, and EDX methods and techniques. The FTIR spectra of modified fly ash showed that there was no chemical reaction between the surfactants and fly ash. The XRD patterns and FESEM images indicated that modified fly ash had zeolite structure with a pore size of about 50 nm. Heavy metal ion adsorption behavior as well as adsorption isotherm models (Langmuir and Freundlich) of Cd2+ and Hg2+ ions of the unmodified and modified fly ash were also investigated and discussed. The amount of adsorbed ions of the modified fly ash was higher than that of the unmodified fly ash. The calculated results from the adsorption data according to the adsorption isotherm models of the above ions displayed that the Langmuir isotherm model was complied for the Cd2+ adsorption process while the Freundlich isotherm model was fitted for the Hg2+ adsorption process. |
| format | Article |
| id | doaj-art-cd16def2f4544beca8646eccabe805f3 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-cd16def2f4544beca8646eccabe805f32025-02-03T01:26:57ZengWileyJournal of Chemistry2090-90632090-90712020-01-01202010.1155/2020/84284738428473Using Modified Fly Ash for Removal of Heavy Metal Ions from Aqueous SolutionThuy Chinh Nguyen0Trang Do Mai Tran1Van Bay Dao2Quoc-Trung Vu3Trinh Duy Nguyen4Hoang Thai5Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, VietnamInstitute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, VietnamFaculty of Chemistry, Hanoi National University of Education, 136, Xuan Thuy, Cau Giay, Hanoi 100000, VietnamFaculty of Chemistry, Hanoi National University of Education, 136, Xuan Thuy, Cau Giay, Hanoi 100000, VietnamNTT Institute of High Technology, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 700000, VietnamGraduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, VietnamThis paper presents the characteristics of fly ash which was modified by 2-mercaptobenzothiazole (MBT) and sodium dodecyl sulfate (SDS) as the surfactants after treating with 1M NaOH solution. The change in morphology, specific surface area, crystal structure, and composition of the unmodified and modified fly ash was evaluated by FTIR, XRD, FESEM, BET, and EDX methods and techniques. The FTIR spectra of modified fly ash showed that there was no chemical reaction between the surfactants and fly ash. The XRD patterns and FESEM images indicated that modified fly ash had zeolite structure with a pore size of about 50 nm. Heavy metal ion adsorption behavior as well as adsorption isotherm models (Langmuir and Freundlich) of Cd2+ and Hg2+ ions of the unmodified and modified fly ash were also investigated and discussed. The amount of adsorbed ions of the modified fly ash was higher than that of the unmodified fly ash. The calculated results from the adsorption data according to the adsorption isotherm models of the above ions displayed that the Langmuir isotherm model was complied for the Cd2+ adsorption process while the Freundlich isotherm model was fitted for the Hg2+ adsorption process.http://dx.doi.org/10.1155/2020/8428473 |
| spellingShingle | Thuy Chinh Nguyen Trang Do Mai Tran Van Bay Dao Quoc-Trung Vu Trinh Duy Nguyen Hoang Thai Using Modified Fly Ash for Removal of Heavy Metal Ions from Aqueous Solution Journal of Chemistry |
| title | Using Modified Fly Ash for Removal of Heavy Metal Ions from Aqueous Solution |
| title_full | Using Modified Fly Ash for Removal of Heavy Metal Ions from Aqueous Solution |
| title_fullStr | Using Modified Fly Ash for Removal of Heavy Metal Ions from Aqueous Solution |
| title_full_unstemmed | Using Modified Fly Ash for Removal of Heavy Metal Ions from Aqueous Solution |
| title_short | Using Modified Fly Ash for Removal of Heavy Metal Ions from Aqueous Solution |
| title_sort | using modified fly ash for removal of heavy metal ions from aqueous solution |
| url | http://dx.doi.org/10.1155/2020/8428473 |
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