Remoção de cromo (VI) de soluções aquosas utilizando o compósito magnético calcinado hidrotalcita-óxido de ferro: estudo cinético e de equilíbrio termodinâmico Removal of chromium (VI) from aqueous solutions using the calcined magnetic composite hydrotalcite-iron oxide: kinetic and thermodynamic equilibrium studies
<abstract language="eng">In this work, hydrotalcite, a layered double hydroxide, had its ion exchange properties combined with the magnetic properties of iron oxide to produce a magnetic adsorbent, HT-Fe 500. These magnetic composites can be used as adsorbents for anionic contaminant...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2013-01-01
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| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000300012 |
| _version_ | 1828842695486865408 |
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| author | Thiago Vinícius Toledo Carlos Roberto Bellato Kenia Dias Pessoa Maurício Paulo Ferreira Fontes |
| author_facet | Thiago Vinícius Toledo Carlos Roberto Bellato Kenia Dias Pessoa Maurício Paulo Ferreira Fontes |
| author_sort | Thiago Vinícius Toledo |
| collection | DOAJ |
| description | <abstract language="eng">In this work, hydrotalcite, a layered double hydroxide, had its ion exchange properties combined with the magnetic properties of iron oxide to produce a magnetic adsorbent, HT-Fe 500. These magnetic composites can be used as adsorbents for anionic contaminants in water and subsequently removed from the medium by a simple magnetic process. Removal of chromium (VI) from aqueous solutions using HT-Fe 500 was achieved using batch adsorption experiments. The adsorption capacity, calculated with the Langmuir-Freundlich model showed to be dependent on temperature, reaching values of 25.93 and 48.31 mg g-1, respectively, for temperatures of 25 and 30 ºC. |
| first_indexed | 2024-12-12T20:29:45Z |
| format | Article |
| id | doaj.art-41c622c9c33e4605804a6a77d7b262d8 |
| institution | Directory Open Access Journal |
| issn | 0100-4042 1678-7064 |
| language | English |
| last_indexed | 2024-12-12T20:29:45Z |
| publishDate | 2013-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-41c622c9c33e4605804a6a77d7b262d82022-12-22T00:13:03ZengSociedade Brasileira de QuímicaQuímica Nova0100-40421678-70642013-01-01363419425Remoção de cromo (VI) de soluções aquosas utilizando o compósito magnético calcinado hidrotalcita-óxido de ferro: estudo cinético e de equilíbrio termodinâmico Removal of chromium (VI) from aqueous solutions using the calcined magnetic composite hydrotalcite-iron oxide: kinetic and thermodynamic equilibrium studiesThiago Vinícius ToledoCarlos Roberto BellatoKenia Dias PessoaMaurício Paulo Ferreira Fontes<abstract language="eng">In this work, hydrotalcite, a layered double hydroxide, had its ion exchange properties combined with the magnetic properties of iron oxide to produce a magnetic adsorbent, HT-Fe 500. These magnetic composites can be used as adsorbents for anionic contaminants in water and subsequently removed from the medium by a simple magnetic process. Removal of chromium (VI) from aqueous solutions using HT-Fe 500 was achieved using batch adsorption experiments. The adsorption capacity, calculated with the Langmuir-Freundlich model showed to be dependent on temperature, reaching values of 25.93 and 48.31 mg g-1, respectively, for temperatures of 25 and 30 ºC.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000300012chromium (VI)adsorptionhydrotalcite-iron oxide composite |
| spellingShingle | Thiago Vinícius Toledo Carlos Roberto Bellato Kenia Dias Pessoa Maurício Paulo Ferreira Fontes Remoção de cromo (VI) de soluções aquosas utilizando o compósito magnético calcinado hidrotalcita-óxido de ferro: estudo cinético e de equilíbrio termodinâmico Removal of chromium (VI) from aqueous solutions using the calcined magnetic composite hydrotalcite-iron oxide: kinetic and thermodynamic equilibrium studies Química Nova chromium (VI) adsorption hydrotalcite-iron oxide composite |
| title | Remoção de cromo (VI) de soluções aquosas utilizando o compósito magnético calcinado hidrotalcita-óxido de ferro: estudo cinético e de equilíbrio termodinâmico Removal of chromium (VI) from aqueous solutions using the calcined magnetic composite hydrotalcite-iron oxide: kinetic and thermodynamic equilibrium studies |
| title_full | Remoção de cromo (VI) de soluções aquosas utilizando o compósito magnético calcinado hidrotalcita-óxido de ferro: estudo cinético e de equilíbrio termodinâmico Removal of chromium (VI) from aqueous solutions using the calcined magnetic composite hydrotalcite-iron oxide: kinetic and thermodynamic equilibrium studies |
| title_fullStr | Remoção de cromo (VI) de soluções aquosas utilizando o compósito magnético calcinado hidrotalcita-óxido de ferro: estudo cinético e de equilíbrio termodinâmico Removal of chromium (VI) from aqueous solutions using the calcined magnetic composite hydrotalcite-iron oxide: kinetic and thermodynamic equilibrium studies |
| title_full_unstemmed | Remoção de cromo (VI) de soluções aquosas utilizando o compósito magnético calcinado hidrotalcita-óxido de ferro: estudo cinético e de equilíbrio termodinâmico Removal of chromium (VI) from aqueous solutions using the calcined magnetic composite hydrotalcite-iron oxide: kinetic and thermodynamic equilibrium studies |
| title_short | Remoção de cromo (VI) de soluções aquosas utilizando o compósito magnético calcinado hidrotalcita-óxido de ferro: estudo cinético e de equilíbrio termodinâmico Removal of chromium (VI) from aqueous solutions using the calcined magnetic composite hydrotalcite-iron oxide: kinetic and thermodynamic equilibrium studies |
| title_sort | remocao de cromo vi de solucoes aquosas utilizando o composito magnetico calcinado hidrotalcita oxido de ferro estudo cinetico e de equilibrio termodinamico removal of chromium vi from aqueous solutions using the calcined magnetic composite hydrotalcite iron oxide kinetic and thermodynamic equilibrium studies |
| topic | chromium (VI) adsorption hydrotalcite-iron oxide composite |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000300012 |
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