Phyllosilicate-based adsorbents decorated with iron oxyhydroxides: Application for lead, chromates and selenites removal
Expanded vermiculite (EVer) was acid activated and silanized in order to obtain suitable substrate’s surface for decoration with iron oxyhydroxides (IO). Obtained activated sample (EVa), was decorated by deposition of either prevailing goethite or amorphous iron oxyhydroxides (AIO) resulting in EV-A...
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| Format: | Article |
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International Institute for the Science of Sintering, Beograd
2024-01-01
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| Series: | Science of Sintering |
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| Online Access: | https://doiserbia.nb.rs/img/doi/0350-820X/2024/0350-820X2300063B.pdf |
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| author | Bugarčić Mladen Veličković Zlate Radovanović Željko Milošević Milena Mijatov Slavko Stojanović Jovica Marinković Aleksandar |
| author_facet | Bugarčić Mladen Veličković Zlate Radovanović Željko Milošević Milena Mijatov Slavko Stojanović Jovica Marinković Aleksandar |
| author_sort | Bugarčić Mladen |
| collection | DOAJ |
| description | Expanded vermiculite (EVer) was acid activated and silanized in order to obtain suitable substrate’s surface for decoration with iron oxyhydroxides (IO). Obtained activated sample (EVa), was decorated by deposition of either prevailing goethite or amorphous iron oxyhydroxides (AIO) resulting in EV-A and EV-B adsorbent, respectively. Modifications of EVa showed improved adsorption performances when used as adsorbent of lead, chromates and selenites. Adsorption experiments conducted in a batch and column system demonstrated good potential for purification of water contaminated with Pb2+, Cr(VI), and Se(IV). Equilibrium adsorption capacity of EV-A in relation to Pb2+ and Cr(VI) were 48 and 54 mg g- 1, respectively, while EV-B showed even better effectiveness for Se(IV) achieving 120 mg g-1 capacity. Regeneration of pollutant saturated adsorbents approved that prepared adsorbents possess fine removal potency even after five adsorption/desorption cycles from 87.58 (for Pb2+/EV-A) to 92.81 % (for Cr(VI)/EV-A) of initial adsorption capacity. |
| format | Article |
| id | doaj-art-84839785276b457fbd241de5a0769d50 |
| institution | Kabale University |
| issn | 0350-820X 1820-7413 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | International Institute for the Science of Sintering, Beograd |
| record_format | Article |
| series | Science of Sintering |
| spelling | doaj-art-84839785276b457fbd241de5a0769d502025-01-30T06:46:26ZengInternational Institute for the Science of Sintering, BeogradScience of Sintering0350-820X1820-74132024-01-0156448550310.2298/SOS231107063B0350-820X2300063BPhyllosilicate-based adsorbents decorated with iron oxyhydroxides: Application for lead, chromates and selenites removalBugarčić Mladen0https://orcid.org/0000-0002-6119-4414Veličković Zlate1https://orcid.org/0000-0001-5335-074XRadovanović Željko2https://orcid.org/0000-0002-0602-3831Milošević Milena3https://orcid.org/0000-0002-4949-5062Mijatov Slavko4https://orcid.org/0000-0001-8512-5088Stojanović Jovica5https://orcid.org/0000-0002-2752-6374Marinković Aleksandar6https://orcid.org/0000-0003-3239-5476Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, SerbiaUniversity of Defence in Belgrade, Military Academy, Belgrade, SerbiaInnovation Center of the Faculty of Technology and Metallurgy Ltd, Belgrade, SerbiaUniversity of Belgrade, Institute of Chemistry, Technology and Metallurgy - National institute of the Republic of Serbia, Department of Ecology and Technoeconomics, Belgrade, SerbiaMilitary Technical Institute, Belgrade, SerbiaInstitute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, SerbiaUniversity of Belgrade, Faculty of Technology and Metallurgy, Belgrade, SerbiaExpanded vermiculite (EVer) was acid activated and silanized in order to obtain suitable substrate’s surface for decoration with iron oxyhydroxides (IO). Obtained activated sample (EVa), was decorated by deposition of either prevailing goethite or amorphous iron oxyhydroxides (AIO) resulting in EV-A and EV-B adsorbent, respectively. Modifications of EVa showed improved adsorption performances when used as adsorbent of lead, chromates and selenites. Adsorption experiments conducted in a batch and column system demonstrated good potential for purification of water contaminated with Pb2+, Cr(VI), and Se(IV). Equilibrium adsorption capacity of EV-A in relation to Pb2+ and Cr(VI) were 48 and 54 mg g- 1, respectively, while EV-B showed even better effectiveness for Se(IV) achieving 120 mg g-1 capacity. Regeneration of pollutant saturated adsorbents approved that prepared adsorbents possess fine removal potency even after five adsorption/desorption cycles from 87.58 (for Pb2+/EV-A) to 92.81 % (for Cr(VI)/EV-A) of initial adsorption capacity.https://doiserbia.nb.rs/img/doi/0350-820X/2024/0350-820X2300063B.pdfvermiculitephyllosilicatesiron oxyhydroxidesgoethiteheavy metals |
| spellingShingle | Bugarčić Mladen Veličković Zlate Radovanović Željko Milošević Milena Mijatov Slavko Stojanović Jovica Marinković Aleksandar Phyllosilicate-based adsorbents decorated with iron oxyhydroxides: Application for lead, chromates and selenites removal Science of Sintering vermiculite phyllosilicates iron oxyhydroxides goethite heavy metals |
| title | Phyllosilicate-based adsorbents decorated with iron oxyhydroxides: Application for lead, chromates and selenites removal |
| title_full | Phyllosilicate-based adsorbents decorated with iron oxyhydroxides: Application for lead, chromates and selenites removal |
| title_fullStr | Phyllosilicate-based adsorbents decorated with iron oxyhydroxides: Application for lead, chromates and selenites removal |
| title_full_unstemmed | Phyllosilicate-based adsorbents decorated with iron oxyhydroxides: Application for lead, chromates and selenites removal |
| title_short | Phyllosilicate-based adsorbents decorated with iron oxyhydroxides: Application for lead, chromates and selenites removal |
| title_sort | phyllosilicate based adsorbents decorated with iron oxyhydroxides application for lead chromates and selenites removal |
| topic | vermiculite phyllosilicates iron oxyhydroxides goethite heavy metals |
| url | https://doiserbia.nb.rs/img/doi/0350-820X/2024/0350-820X2300063B.pdf |
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