Silica Synthesis from Mount Semeru Volcanic Ash as a Nickel Heavy Metal Adsorbent
This study aims to synthesize SiO2 gel-based adsorbents using the sol-gel method from Mount Semeru volcanic ash through varying concentrations of sodium hydroxide and acid catalysts and to determine its adsorption capacity on nickel (Ni(II)). Volcanic ash was obtained from Lumajang District, East Ja...
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Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)
2025-08-01
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| Series: | Bulletin of Chemical Reaction Engineering & Catalysis |
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| Online Access: | https://journal.bcrec.id/index.php/bcrec/article/view/20337 |
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| author | Raden Darmawan Sri Rachmania Juliastuti Bagas Hardiatmoko Aulia Defriana Fitria Nur Laily |
| author_facet | Raden Darmawan Sri Rachmania Juliastuti Bagas Hardiatmoko Aulia Defriana Fitria Nur Laily |
| author_sort | Raden Darmawan |
| collection | DOAJ |
| description | This study aims to synthesize SiO2 gel-based adsorbents using the sol-gel method from Mount Semeru volcanic ash through varying concentrations of sodium hydroxide and acid catalysts and to determine its adsorption capacity on nickel (Ni(II)). Volcanic ash was obtained from Lumajang District, East Java, Indonesia. The silica gel adsorbent was made using the sol-gel method with different amounts of NaOH (1.0 M, 2.0 M, 3.0 M, and 4.0 M) and acid catalysts (acetic and hydrochloric acid). First, silica (SiO2) was extracted from the volcanic ash, and then the sol-gel process was used to manufacture SiO2 gel-based adsorbents. The SiO2 gel was analyzed using X-ray Fluorescence Analysis, Fourier-transform Infrared (FTIR), and Brunauer Emmett, and Teller (BET). Adsorption analysis of the Ni(II) metal ion content was conducted at various stirring rates and adsorbent dose masses. The results obtained showed that the most optimal SiO2 gel was achieved when using 3.0 M NaOH, 10.53% HCl, and 8.30% CH3COOH. Through FTIR analysis, NaOH 3.0 M x HCl silica contains only the siloxane groups, whereas NaOH 3.0 M x CH3COOH silica contains both the silanol and siloxane groups. The best results were gained with SiO2-based adsorbents (NaOH 3.0 M x CH3COOH) at a dose of 10 g/L and a stirring rate of 50 rpm, with Ni(II) adsorption effectiveness of 99.80%. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). |
| format | Article |
| id | doaj-art-e06ee42dcf084b629bdcbcd78e5cc8fd |
| institution | DOAJ |
| issn | 1978-2993 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS) |
| record_format | Article |
| series | Bulletin of Chemical Reaction Engineering & Catalysis |
| spelling | doaj-art-e06ee42dcf084b629bdcbcd78e5cc8fd2025-08-20T03:08:59ZengMasyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)Bulletin of Chemical Reaction Engineering & Catalysis1978-29932025-08-0120228029210.9767/bcrec.203378541Silica Synthesis from Mount Semeru Volcanic Ash as a Nickel Heavy Metal AdsorbentRaden Darmawan0https://orcid.org/0000-0003-3170-0678Sri Rachmania Juliastuti1Bagas Hardiatmoko2Aulia Defriana3Fitria Nur Laily4Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Jl Raya ITS, 60111, Surabaya, IndonesiaDepartment of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Jl Raya ITS, 60111, Surabaya, IndonesiaDepartment of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Jl Raya ITS, 60111, Surabaya, IndonesiaDepartment of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Jl Raya ITS, 60111, Surabaya, IndonesiaDepartment of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Jl Raya ITS, 60111, Surabaya, IndonesiaThis study aims to synthesize SiO2 gel-based adsorbents using the sol-gel method from Mount Semeru volcanic ash through varying concentrations of sodium hydroxide and acid catalysts and to determine its adsorption capacity on nickel (Ni(II)). Volcanic ash was obtained from Lumajang District, East Java, Indonesia. The silica gel adsorbent was made using the sol-gel method with different amounts of NaOH (1.0 M, 2.0 M, 3.0 M, and 4.0 M) and acid catalysts (acetic and hydrochloric acid). First, silica (SiO2) was extracted from the volcanic ash, and then the sol-gel process was used to manufacture SiO2 gel-based adsorbents. The SiO2 gel was analyzed using X-ray Fluorescence Analysis, Fourier-transform Infrared (FTIR), and Brunauer Emmett, and Teller (BET). Adsorption analysis of the Ni(II) metal ion content was conducted at various stirring rates and adsorbent dose masses. The results obtained showed that the most optimal SiO2 gel was achieved when using 3.0 M NaOH, 10.53% HCl, and 8.30% CH3COOH. Through FTIR analysis, NaOH 3.0 M x HCl silica contains only the siloxane groups, whereas NaOH 3.0 M x CH3COOH silica contains both the silanol and siloxane groups. The best results were gained with SiO2-based adsorbents (NaOH 3.0 M x CH3COOH) at a dose of 10 g/L and a stirring rate of 50 rpm, with Ni(II) adsorption effectiveness of 99.80%. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).https://journal.bcrec.id/index.php/bcrec/article/view/20337adsorbentcharacterizationmount semerusilicasol-gelvolcanic ash |
| spellingShingle | Raden Darmawan Sri Rachmania Juliastuti Bagas Hardiatmoko Aulia Defriana Fitria Nur Laily Silica Synthesis from Mount Semeru Volcanic Ash as a Nickel Heavy Metal Adsorbent Bulletin of Chemical Reaction Engineering & Catalysis adsorbent characterization mount semeru silica sol-gel volcanic ash |
| title | Silica Synthesis from Mount Semeru Volcanic Ash as a Nickel Heavy Metal Adsorbent |
| title_full | Silica Synthesis from Mount Semeru Volcanic Ash as a Nickel Heavy Metal Adsorbent |
| title_fullStr | Silica Synthesis from Mount Semeru Volcanic Ash as a Nickel Heavy Metal Adsorbent |
| title_full_unstemmed | Silica Synthesis from Mount Semeru Volcanic Ash as a Nickel Heavy Metal Adsorbent |
| title_short | Silica Synthesis from Mount Semeru Volcanic Ash as a Nickel Heavy Metal Adsorbent |
| title_sort | silica synthesis from mount semeru volcanic ash as a nickel heavy metal adsorbent |
| topic | adsorbent characterization mount semeru silica sol-gel volcanic ash |
| url | https://journal.bcrec.id/index.php/bcrec/article/view/20337 |
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