The sorption of inorganic arsenic on modified sepiolite: Effect of hydrated iron(III)-oxide
The sorption of inorganic arsenic species, As(III) and As(V), from water by sepiolite modified with hydrated iron(III) oxide was investigated at 25 °C through batch studies. The influence of the initial pH value, the initial As concentrations, the contact time and types of water on the sorp...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2014-01-01
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| Series: | Journal of the Serbian Chemical Society |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2014/0352-51391400017I.pdf |
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| author | Ilić Nikola I. Lazarević Slavica S. Rajaković-Ognjanović Vladana N. Rajaković Ljubinka V. Janaćković Đorđe T. Petrović Rada D. |
| author_facet | Ilić Nikola I. Lazarević Slavica S. Rajaković-Ognjanović Vladana N. Rajaković Ljubinka V. Janaćković Đorđe T. Petrović Rada D. |
| author_sort | Ilić Nikola I. |
| collection | DOAJ |
| description | The sorption of inorganic arsenic species, As(III) and As(V), from water by
sepiolite modified with hydrated iron(III) oxide was investigated at 25 °C
through batch studies. The influence of the initial pH value, the initial As
concentrations, the contact time and types of water on the sorption capacity
was investigated. Two types of water were used, deionized and groundwater.
The maximal sorption capacity for As(III) from deionized water was observed
at initial and final pH value 7.0, while the bonding of As(V) was observed to
be almost pH independent for pH value in the range from 2.0 to 7.0, and the
significant decrease in the sorption capacity was observed at pH values above
7.0. The sorption capacity at initial pH 7.0 was about 10 mg gˉ1 for As(III)
and 4.2 mg gˉ1 for As(V) in deionized water. The capacity in groundwater was
decreased by 40 % for As(III) and by 20 % for As(V). The Langmuir model and
pseudo-second order kinetic model revealed good agreement with the
experimental results. The results show that Fe(III)-modified sepiolite
exhibits significant affinity for arsenic removal and it has a potential for
the application in water purification processes. [Projekat Ministarstva nauke
Republike Srbije, br. III 45019, III 43009 i TR 37010] |
| first_indexed | 2024-12-10T17:49:27Z |
| format | Article |
| id | doaj.art-76a5ae43a9e8422a8527349c9a2f4e06 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 1820-7421 |
| language | English |
| last_indexed | 2024-12-10T17:49:27Z |
| publishDate | 2014-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-76a5ae43a9e8422a8527349c9a2f4e062022-12-22T01:39:07ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51391820-74212014-01-0179781582810.2298/JSC130912017I0352-51391400017IThe sorption of inorganic arsenic on modified sepiolite: Effect of hydrated iron(III)-oxideIlić Nikola I.0Lazarević Slavica S.1Rajaković-Ognjanović Vladana N.2Rajaković Ljubinka V.3Janaćković Đorđe T.4Petrović Rada D.5Faculty of Technology and Metallurgy, BelgradeFaculty of Technology and Metallurgy, BelgradeFaculty of Civil Engineering, BelgradeFaculty of Technology and Metallurgy, BelgradeFaculty of Technology and Metallurgy, BelgradeFaculty of Technology and Metallurgy, BelgradeThe sorption of inorganic arsenic species, As(III) and As(V), from water by sepiolite modified with hydrated iron(III) oxide was investigated at 25 °C through batch studies. The influence of the initial pH value, the initial As concentrations, the contact time and types of water on the sorption capacity was investigated. Two types of water were used, deionized and groundwater. The maximal sorption capacity for As(III) from deionized water was observed at initial and final pH value 7.0, while the bonding of As(V) was observed to be almost pH independent for pH value in the range from 2.0 to 7.0, and the significant decrease in the sorption capacity was observed at pH values above 7.0. The sorption capacity at initial pH 7.0 was about 10 mg gˉ1 for As(III) and 4.2 mg gˉ1 for As(V) in deionized water. The capacity in groundwater was decreased by 40 % for As(III) and by 20 % for As(V). The Langmuir model and pseudo-second order kinetic model revealed good agreement with the experimental results. The results show that Fe(III)-modified sepiolite exhibits significant affinity for arsenic removal and it has a potential for the application in water purification processes. [Projekat Ministarstva nauke Republike Srbije, br. III 45019, III 43009 i TR 37010]http://www.doiserbia.nb.rs/img/doi/0352-5139/2014/0352-51391400017I.pdfarsenic(III)arsenic(V)Fe(III)-sepiolitesorptionpH influence |
| spellingShingle | Ilić Nikola I. Lazarević Slavica S. Rajaković-Ognjanović Vladana N. Rajaković Ljubinka V. Janaćković Đorđe T. Petrović Rada D. The sorption of inorganic arsenic on modified sepiolite: Effect of hydrated iron(III)-oxide Journal of the Serbian Chemical Society arsenic(III) arsenic(V) Fe(III)-sepiolite sorption pH influence |
| title | The sorption of inorganic arsenic on modified sepiolite: Effect of hydrated iron(III)-oxide |
| title_full | The sorption of inorganic arsenic on modified sepiolite: Effect of hydrated iron(III)-oxide |
| title_fullStr | The sorption of inorganic arsenic on modified sepiolite: Effect of hydrated iron(III)-oxide |
| title_full_unstemmed | The sorption of inorganic arsenic on modified sepiolite: Effect of hydrated iron(III)-oxide |
| title_short | The sorption of inorganic arsenic on modified sepiolite: Effect of hydrated iron(III)-oxide |
| title_sort | sorption of inorganic arsenic on modified sepiolite effect of hydrated iron iii oxide |
| topic | arsenic(III) arsenic(V) Fe(III)-sepiolite sorption pH influence |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2014/0352-51391400017I.pdf |
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