Adsorption capacity of silica sba-15 and titanosilicate ets-10 toward indium ions
Indium is an extremely important element for industry that is distributed in the Earthrsquo;s crust at very low concentrations. The recovery of indium by silica SBA-15 and titanosilicate ETS-10 was investigated at different pH levels, temperatures, times of contact and indium concentrations. A maxim...
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ftinstdsiibn:oai:ibn.idsi.md:187639 2024-09-30T14:40:59+00:00 Adsorption capacity of silica sba-15 and titanosilicate ets-10 toward indium ions Zinicovscaia, I. Зиньковская, И. Iushin, N.S. Yushin , N.S. Humelnicu, D. Grozdov, D.S. Ignat, M. Humelnicu, I. 2023 application/pdf https://ibn.idsi.md/vizualizare_articol/187639 https://doi.org/10.19261/admateh.2023.ab03 en eng info:eu-repo/semantics/altIdentifier/doi/10.19261/admateh.2023.ab03 https://ibn.idsi.md/vizualizare_articol/187639 doi:10.19261/admateh.2023.ab03 info:eu-repo/semantics/openAccess Advanced materials to reduce the impact of toxic chemicals on the environment and health" (Ediția 1) info:eu-repo/semantics/article 2023 ftinstdsiibn https://doi.org/10.19261/admateh.2023.ab03 2024-09-16T18:09:50Z Indium is an extremely important element for industry that is distributed in the Earthrsquo;s crust at very low concentrations. The recovery of indium by silica SBA-15 and titanosilicate ETS-10 was investigated at different pH levels, temperatures, times of contact and indium concentrations. A maximum removal of indium by ETS-10 was achieved at pH 3.0, while by SBA-15 it was within the pH range of 5.0ndash;6.0. By studying kinetics, the applicability of the Elovich model for the description of indium adsorption on silica SBA-15 was shown, while its sorption on titanosilicate ETS-10 fitted well with the pseudo-first-order model. Langmuir and Freundlich adsorption isotherms were used to explain the equanimity of the sorption process. The Langmuir model showed its applicability for the explanation of the equilibrium data obtained for both sorbents, the maximum sorption capacity obtained using the model constituted 366 mg/g for titanosilicate ETS-10 at pH 3.0, temperature 22 deg;C and contact time 60 min, and 2036 mg/g for silica SBA-15 at pH 6.0, temperature 22 deg;C and contact time 60 min. Indium recovery was not dependent on the temperature and the sorption process was spontaneous in nature. The interactions between the indium sulfate structure and surfaces of adsorbents were investigated theoretically using the ORCA quantum chemistry program package. The spent SBA-15 and ETS-10 could be easily regenerated by using 0.01 M HCl and reused with up to 6 cycles of adsorption/desorption with a decrease in the removal efficiency between 4% and 10% for SBA-15 and 5% and 10% for ETS-10, respectively. Article in Journal/Newspaper Orca Instrument Bibliometric National (IBN - Information Society Development Institute) Langmuir ENVELOPE(-67.150,-67.150,-66.967,-66.967) Advanced materials to reduce the impact of toxic chemicals on the environment and health |
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Open Polar |
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Instrument Bibliometric National (IBN - Information Society Development Institute) |
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ftinstdsiibn |
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English |
description |
Indium is an extremely important element for industry that is distributed in the Earthrsquo;s crust at very low concentrations. The recovery of indium by silica SBA-15 and titanosilicate ETS-10 was investigated at different pH levels, temperatures, times of contact and indium concentrations. A maximum removal of indium by ETS-10 was achieved at pH 3.0, while by SBA-15 it was within the pH range of 5.0ndash;6.0. By studying kinetics, the applicability of the Elovich model for the description of indium adsorption on silica SBA-15 was shown, while its sorption on titanosilicate ETS-10 fitted well with the pseudo-first-order model. Langmuir and Freundlich adsorption isotherms were used to explain the equanimity of the sorption process. The Langmuir model showed its applicability for the explanation of the equilibrium data obtained for both sorbents, the maximum sorption capacity obtained using the model constituted 366 mg/g for titanosilicate ETS-10 at pH 3.0, temperature 22 deg;C and contact time 60 min, and 2036 mg/g for silica SBA-15 at pH 6.0, temperature 22 deg;C and contact time 60 min. Indium recovery was not dependent on the temperature and the sorption process was spontaneous in nature. The interactions between the indium sulfate structure and surfaces of adsorbents were investigated theoretically using the ORCA quantum chemistry program package. The spent SBA-15 and ETS-10 could be easily regenerated by using 0.01 M HCl and reused with up to 6 cycles of adsorption/desorption with a decrease in the removal efficiency between 4% and 10% for SBA-15 and 5% and 10% for ETS-10, respectively. |
format |
Article in Journal/Newspaper |
author |
Zinicovscaia, I. Зиньковская, И. Iushin, N.S. Yushin , N.S. Humelnicu, D. Grozdov, D.S. Ignat, M. Humelnicu, I. |
spellingShingle |
Zinicovscaia, I. Зиньковская, И. Iushin, N.S. Yushin , N.S. Humelnicu, D. Grozdov, D.S. Ignat, M. Humelnicu, I. Adsorption capacity of silica sba-15 and titanosilicate ets-10 toward indium ions |
author_facet |
Zinicovscaia, I. Зиньковская, И. Iushin, N.S. Yushin , N.S. Humelnicu, D. Grozdov, D.S. Ignat, M. Humelnicu, I. |
author_sort |
Zinicovscaia, I. |
title |
Adsorption capacity of silica sba-15 and titanosilicate ets-10 toward indium ions |
title_short |
Adsorption capacity of silica sba-15 and titanosilicate ets-10 toward indium ions |
title_full |
Adsorption capacity of silica sba-15 and titanosilicate ets-10 toward indium ions |
title_fullStr |
Adsorption capacity of silica sba-15 and titanosilicate ets-10 toward indium ions |
title_full_unstemmed |
Adsorption capacity of silica sba-15 and titanosilicate ets-10 toward indium ions |
title_sort |
adsorption capacity of silica sba-15 and titanosilicate ets-10 toward indium ions |
publishDate |
2023 |
url |
https://ibn.idsi.md/vizualizare_articol/187639 https://doi.org/10.19261/admateh.2023.ab03 |
long_lat |
ENVELOPE(-67.150,-67.150,-66.967,-66.967) |
geographic |
Langmuir |
geographic_facet |
Langmuir |
genre |
Orca |
genre_facet |
Orca |
op_source |
Advanced materials to reduce the impact of toxic chemicals on the environment and health" (Ediția 1) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.19261/admateh.2023.ab03 https://ibn.idsi.md/vizualizare_articol/187639 doi:10.19261/admateh.2023.ab03 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.19261/admateh.2023.ab03 |
container_title |
Advanced materials to reduce the impact of toxic chemicals on the environment and health |
_version_ |
1811643429867749376 |