Adsorptive Removal of Copper by Using Surfactant Modified Laterite Soil
Removal of copper ion (Cu2+) by using surfactant modified laterite (SML) was investigated in the present study. Characterizations of laterite were examined by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), inductively coupled plasma mass spectrometry (ICP-MS), and total ca...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2017/1986071 |
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| author | Tien Duc Pham Hoang Hiep Nguyen Ngoc Viet Nguyen Thanh Tu Vu Thi Ngoc Mai Pham Thi Hai Yen Doan Manh Ha Nguyen Thi Mai Viet Ngo |
| author_facet | Tien Duc Pham Hoang Hiep Nguyen Ngoc Viet Nguyen Thanh Tu Vu Thi Ngoc Mai Pham Thi Hai Yen Doan Manh Ha Nguyen Thi Mai Viet Ngo |
| author_sort | Tien Duc Pham |
| collection | DOAJ |
| description | Removal of copper ion (Cu2+) by using surfactant modified laterite (SML) was investigated in the present study. Characterizations of laterite were examined by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), inductively coupled plasma mass spectrometry (ICP-MS), and total carbon analysis. The optimum conditions for removal of Cu2+ by adsorption using SML were systematically studied and found as pH 6, contact time 90 min, adsorbent dosage 5 mg/mL, and ionic strength 10 mM NaCl. The equilibrium concentration of copper ions was measured by flame atomic absorption spectrometry (F-AAS). Surface modification of laterite by anionic surfactant sodium dodecyl sulfate (SDS) induced a significant increase of the removal efficiency of Cu2+. The surface modifications of laterite by preadsorption of SDS and sequential adsorption of Cu2+ were also evaluated by XRD and FT-IR. The adsorption of Cu2+ onto SML increases with increasing NaCl concentration from 1 to 10 mM, but at high salt concentration this trend is reversed because desorption of SDS from laterite surface was enhanced by increasing salt concentration. Experimental results of Cu2+/SML adsorption isotherms at different ionic strengths can be represented well by a two-step adsorption model. Based on adsorption isotherms, surface charge effects, and surface modification, we suggest that the adsorption mechanism of Cu2+ onto SML was induced by electrostatic attraction between Cu2+ and the negatively charged SML surface and nonelectrostatic interactions between Cu2+ and organic substances in the laterite. |
| format | Article |
| id | doaj-art-94c8ae9e909e4a86b9a9ce19dd7d34f3 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-94c8ae9e909e4a86b9a9ce19dd7d34f32025-02-03T01:00:49ZengWileyJournal of Chemistry2090-90632090-90712017-01-01201710.1155/2017/19860711986071Adsorptive Removal of Copper by Using Surfactant Modified Laterite SoilTien Duc Pham0Hoang Hiep Nguyen1Ngoc Viet Nguyen2Thanh Tu Vu3Thi Ngoc Mai Pham4Thi Hai Yen Doan5Manh Ha Nguyen6Thi Mai Viet Ngo7Faculty of Chemistry, VNU-University of Science, Vietnam National University-Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 10000, VietnamFaculty of Chemistry, VNU-University of Science, Vietnam National University-Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 10000, VietnamFaculty of Chemistry, VNU-University of Science, Vietnam National University-Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 10000, VietnamFaculty of Chemistry, VNU-University of Science, Vietnam National University-Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 10000, VietnamFaculty of Chemistry, VNU-University of Science, Vietnam National University-Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 10000, VietnamFaculty of Chemistry, VNU-University of Science, Vietnam National University-Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 10000, VietnamFaculty of Chemistry, VNU-University of Science, Vietnam National University-Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 10000, VietnamThai Nguyen University of Education, Thai Nguyen University, 20 Luong Ngoc Quyen, Quang Trung, Thai Nguyen, VietnamRemoval of copper ion (Cu2+) by using surfactant modified laterite (SML) was investigated in the present study. Characterizations of laterite were examined by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), inductively coupled plasma mass spectrometry (ICP-MS), and total carbon analysis. The optimum conditions for removal of Cu2+ by adsorption using SML were systematically studied and found as pH 6, contact time 90 min, adsorbent dosage 5 mg/mL, and ionic strength 10 mM NaCl. The equilibrium concentration of copper ions was measured by flame atomic absorption spectrometry (F-AAS). Surface modification of laterite by anionic surfactant sodium dodecyl sulfate (SDS) induced a significant increase of the removal efficiency of Cu2+. The surface modifications of laterite by preadsorption of SDS and sequential adsorption of Cu2+ were also evaluated by XRD and FT-IR. The adsorption of Cu2+ onto SML increases with increasing NaCl concentration from 1 to 10 mM, but at high salt concentration this trend is reversed because desorption of SDS from laterite surface was enhanced by increasing salt concentration. Experimental results of Cu2+/SML adsorption isotherms at different ionic strengths can be represented well by a two-step adsorption model. Based on adsorption isotherms, surface charge effects, and surface modification, we suggest that the adsorption mechanism of Cu2+ onto SML was induced by electrostatic attraction between Cu2+ and the negatively charged SML surface and nonelectrostatic interactions between Cu2+ and organic substances in the laterite.http://dx.doi.org/10.1155/2017/1986071 |
| spellingShingle | Tien Duc Pham Hoang Hiep Nguyen Ngoc Viet Nguyen Thanh Tu Vu Thi Ngoc Mai Pham Thi Hai Yen Doan Manh Ha Nguyen Thi Mai Viet Ngo Adsorptive Removal of Copper by Using Surfactant Modified Laterite Soil Journal of Chemistry |
| title | Adsorptive Removal of Copper by Using Surfactant Modified Laterite Soil |
| title_full | Adsorptive Removal of Copper by Using Surfactant Modified Laterite Soil |
| title_fullStr | Adsorptive Removal of Copper by Using Surfactant Modified Laterite Soil |
| title_full_unstemmed | Adsorptive Removal of Copper by Using Surfactant Modified Laterite Soil |
| title_short | Adsorptive Removal of Copper by Using Surfactant Modified Laterite Soil |
| title_sort | adsorptive removal of copper by using surfactant modified laterite soil |
| url | http://dx.doi.org/10.1155/2017/1986071 |
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