Adsorptive Removal of Iron Using SiO2 Nanoparticles Extracted from Rice Husk Ash
In this work, SiO2 nanoparticles were prepared by the sol-gel method after sodium silicate was extracted from rice husk ash (RHA) under various experimental conditions such as types of acids, NaOH concentration, dissolved time, and temperature and used for removal of Fe2+ ions from aqueous solutions...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Journal of Analytical Methods in Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2019/6210240 |
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| author | Tan Tai Nguyen Hoa Thai Ma Pramod Avti Mohammed J. K. Bashir Choon Aun Ng Ling Yong Wong Hieng Kiat Jun Quang Minh Ngo Ngoc Quyen Tran |
| author_facet | Tan Tai Nguyen Hoa Thai Ma Pramod Avti Mohammed J. K. Bashir Choon Aun Ng Ling Yong Wong Hieng Kiat Jun Quang Minh Ngo Ngoc Quyen Tran |
| author_sort | Tan Tai Nguyen |
| collection | DOAJ |
| description | In this work, SiO2 nanoparticles were prepared by the sol-gel method after sodium silicate was extracted from rice husk ash (RHA) under various experimental conditions such as types of acids, NaOH concentration, dissolved time, and temperature and used for removal of Fe2+ ions from aqueous solutions. The extracted SiO2 was morphologically and chemically characterized and showed a surface area of 78 m2/g and uniform pores of 2.71 nm, offering high adsorption capacity for Fe2+ ions. The influence of pH, contact time, and amount of adsorbent was studied in order to establish the best conditions for the Fe2+ adsorption and removal. Furthermore, the adsorption data were fitted with an exponential shape curve for all the three variable parameters that affect the adsorption process. The best results were obtained for pH 5, 20 min contact time, and 0.5 g adsorbent dose. The loading adsorption capacity was 9 mg of Fe2+ ions/g SiO2 in the concentration range 0.1–1.0 mgL−1. In addition, the synthesized SiO2 with the size of around 50 nm can be used for specific heavy metal removal and drug delivery, after modification of the SiO2 surface with various functional groups. |
| format | Article |
| id | doaj-art-e7b43893c7ec429392b9e64706a410e3 |
| institution | Kabale University |
| issn | 2090-8865 2090-8873 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Analytical Methods in Chemistry |
| spelling | doaj-art-e7b43893c7ec429392b9e64706a410e32025-08-20T03:24:43ZengWileyJournal of Analytical Methods in Chemistry2090-88652090-88732019-01-01201910.1155/2019/62102406210240Adsorptive Removal of Iron Using SiO2 Nanoparticles Extracted from Rice Husk AshTan Tai Nguyen0Hoa Thai Ma1Pramod Avti2Mohammed J. K. Bashir3Choon Aun Ng4Ling Yong Wong5Hieng Kiat Jun6Quang Minh Ngo7Ngoc Quyen Tran8Department of Materials Science, School of Applied Chemistry, Tra Vinh University, Tra Vinh City 87000, VietnamDepartment of Active Polymers and Nanomaterials Applications, School of Applied Chemistry, Tra Vinh University, Tra Vinh City 87000, VietnamDepartment of Biophysics, Postgraduate Institute of Medical Education and Research (PGIMER), Sector-12, Chandigarh 160012, IndiaFaculty of Engineering and Green Technology (FEGT), Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, 31900 Kampar, Perak, MalaysiaFaculty of Engineering and Green Technology (FEGT), Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, 31900 Kampar, Perak, MalaysiaFaculty of Engineering and Green Technology (FEGT), Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, 31900 Kampar, Perak, MalaysiaDepartment of Mechanical and Material Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Sungai Long Campus, Bandar Sg. Long, 43000 Kajang, MalaysiaInstitute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, VietnamGraduate University of Science and Technology, Vietnam Academy of Science and Technology, HCM City 70000, VietnamIn this work, SiO2 nanoparticles were prepared by the sol-gel method after sodium silicate was extracted from rice husk ash (RHA) under various experimental conditions such as types of acids, NaOH concentration, dissolved time, and temperature and used for removal of Fe2+ ions from aqueous solutions. The extracted SiO2 was morphologically and chemically characterized and showed a surface area of 78 m2/g and uniform pores of 2.71 nm, offering high adsorption capacity for Fe2+ ions. The influence of pH, contact time, and amount of adsorbent was studied in order to establish the best conditions for the Fe2+ adsorption and removal. Furthermore, the adsorption data were fitted with an exponential shape curve for all the three variable parameters that affect the adsorption process. The best results were obtained for pH 5, 20 min contact time, and 0.5 g adsorbent dose. The loading adsorption capacity was 9 mg of Fe2+ ions/g SiO2 in the concentration range 0.1–1.0 mgL−1. In addition, the synthesized SiO2 with the size of around 50 nm can be used for specific heavy metal removal and drug delivery, after modification of the SiO2 surface with various functional groups.http://dx.doi.org/10.1155/2019/6210240 |
| spellingShingle | Tan Tai Nguyen Hoa Thai Ma Pramod Avti Mohammed J. K. Bashir Choon Aun Ng Ling Yong Wong Hieng Kiat Jun Quang Minh Ngo Ngoc Quyen Tran Adsorptive Removal of Iron Using SiO2 Nanoparticles Extracted from Rice Husk Ash Journal of Analytical Methods in Chemistry |
| title | Adsorptive Removal of Iron Using SiO2 Nanoparticles Extracted from Rice Husk Ash |
| title_full | Adsorptive Removal of Iron Using SiO2 Nanoparticles Extracted from Rice Husk Ash |
| title_fullStr | Adsorptive Removal of Iron Using SiO2 Nanoparticles Extracted from Rice Husk Ash |
| title_full_unstemmed | Adsorptive Removal of Iron Using SiO2 Nanoparticles Extracted from Rice Husk Ash |
| title_short | Adsorptive Removal of Iron Using SiO2 Nanoparticles Extracted from Rice Husk Ash |
| title_sort | adsorptive removal of iron using sio2 nanoparticles extracted from rice husk ash |
| url | http://dx.doi.org/10.1155/2019/6210240 |
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