Adsorção de arsênio(V) pelo compósito magnético hidrotalcita: óxido de ferro
In this work, hydrotalcite, a layered double hydroxide, had its adsorption and ion exchange properties combined with the magnetic properties of iron oxide to produce a magnetic adsorbent, HT-Fe. The removal of As(V) by a HT-Fe adsorbent was evaluated under various conditions. The Kinetic process was...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2011-01-01
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| Series: | Química Nova |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000400002&lng=en&tlng=en |
| _version_ | 1818144969657942016 |
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| author | Thiago Vinícius Toledo Carlos Roberto Bellato Rafael Henrique do Rosário José de Oliveira Marques Neto |
| author_facet | Thiago Vinícius Toledo Carlos Roberto Bellato Rafael Henrique do Rosário José de Oliveira Marques Neto |
| author_sort | Thiago Vinícius Toledo |
| collection | DOAJ |
| description | In this work, hydrotalcite, a layered double hydroxide, had its adsorption and ion exchange properties combined with the magnetic properties of iron oxide to produce a magnetic adsorbent, HT-Fe. The removal of As(V) by a HT-Fe adsorbent was evaluated under various conditions. The Kinetic process was well described by a pseudo-second order rate model. The maximum adsorption capacity, calculated with the Langmuir model showed to be dependent on pH, reaching values of 24.09, 10.19 and 7.44 mg g-1, respectively, for pH values of 4.0, 7.0 and 9.0. The inhibition by competition of anions is dependent on the type of ionic species. |
| first_indexed | 2024-12-11T11:56:01Z |
| format | Article |
| id | doaj.art-279c3efe57694de0b610fe6f310e7a70 |
| institution | Directory Open Access Journal |
| issn | 1678-7064 |
| language | English |
| last_indexed | 2024-12-11T11:56:01Z |
| publishDate | 2011-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-279c3efe57694de0b610fe6f310e7a702022-12-22T01:08:13ZengSociedade Brasileira de QuímicaQuímica Nova1678-70642011-01-0134456156710.1590/S0100-40422011000400002S0100-40422011000400002Adsorção de arsênio(V) pelo compósito magnético hidrotalcita: óxido de ferroThiago Vinícius Toledo0Carlos Roberto Bellato1Rafael Henrique do Rosário2José de Oliveira Marques Neto3Universidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal de ViçosaIn this work, hydrotalcite, a layered double hydroxide, had its adsorption and ion exchange properties combined with the magnetic properties of iron oxide to produce a magnetic adsorbent, HT-Fe. The removal of As(V) by a HT-Fe adsorbent was evaluated under various conditions. The Kinetic process was well described by a pseudo-second order rate model. The maximum adsorption capacity, calculated with the Langmuir model showed to be dependent on pH, reaching values of 24.09, 10.19 and 7.44 mg g-1, respectively, for pH values of 4.0, 7.0 and 9.0. The inhibition by competition of anions is dependent on the type of ionic species.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000400002&lng=en&tlng=enhidrotalcite - iron oxide compositearsenateadsorption |
| spellingShingle | Thiago Vinícius Toledo Carlos Roberto Bellato Rafael Henrique do Rosário José de Oliveira Marques Neto Adsorção de arsênio(V) pelo compósito magnético hidrotalcita: óxido de ferro Química Nova hidrotalcite - iron oxide composite arsenate adsorption |
| title | Adsorção de arsênio(V) pelo compósito magnético hidrotalcita: óxido de ferro |
| title_full | Adsorção de arsênio(V) pelo compósito magnético hidrotalcita: óxido de ferro |
| title_fullStr | Adsorção de arsênio(V) pelo compósito magnético hidrotalcita: óxido de ferro |
| title_full_unstemmed | Adsorção de arsênio(V) pelo compósito magnético hidrotalcita: óxido de ferro |
| title_short | Adsorção de arsênio(V) pelo compósito magnético hidrotalcita: óxido de ferro |
| title_sort | adsorcao de arsenio v pelo composito magnetico hidrotalcita oxido de ferro |
| topic | hidrotalcite - iron oxide composite arsenate adsorption |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000400002&lng=en&tlng=en |
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