Aumento del contenido de ácidos húmicos en un carbón de bajo rango a través de la oxidación con aire y con peróxido de hidrogeno o ácido nítrico
Low-rank coals are an important source of humic acids, which are important in retention processes of water and nutrients in plants. In this study coal samples of Montelibano, Colombia, were oxidized with air at different temperatures and subsequently with H2O2 and HNO3. The materials were characteri...
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Sociedade Brasileira de Química
2013-01-01
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| Series: | Química Nova |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000300007&lng=en&tlng=en |
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doaj-9512466694964f6f9e3faabd41b6c3822020-11-24T23:03:41ZengSociedade Brasileira de QuímicaQuímica Nova1678-70642013-01-0136338739210.1590/S0100-40422013000300007S0100-40422013000300007Aumento del contenido de ácidos húmicos en un carbón de bajo rango a través de la oxidación con aire y con peróxido de hidrogeno o ácido nítricoRuben Anillo-Correa0Fredy Colpas-Castillo1Edgardo Meza-Fuentes2Universidad de CartagenaUniversidad de CartagenaUniversidad de CartagenaLow-rank coals are an important source of humic acids, which are important in retention processes of water and nutrients in plants. In this study coal samples of Montelibano, Colombia, were oxidized with air at different temperatures and subsequently with H2O2 and HNO3. The materials were characterized by FTIR, proximate and elemental analysis, and quantification of humic acids. The oxidation process led to an increased content of oxygenated groups and humic acids in the carbonaceous structure. The solid oxidized with air at 200 ºC for 12 h and re-oxidized with HNO3 for 12 h showed the highest percentage of humic acids (85.3%).http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000300007&lng=en&tlng=encoalhumic acidsoxidation |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Ruben Anillo-Correa Fredy Colpas-Castillo Edgardo Meza-Fuentes |
| spellingShingle |
Ruben Anillo-Correa Fredy Colpas-Castillo Edgardo Meza-Fuentes Aumento del contenido de ácidos húmicos en un carbón de bajo rango a través de la oxidación con aire y con peróxido de hidrogeno o ácido nítrico Química Nova coal humic acids oxidation |
| author_facet |
Ruben Anillo-Correa Fredy Colpas-Castillo Edgardo Meza-Fuentes |
| author_sort |
Ruben Anillo-Correa |
| title |
Aumento del contenido de ácidos húmicos en un carbón de bajo rango a través de la oxidación con aire y con peróxido de hidrogeno o ácido nítrico |
| title_short |
Aumento del contenido de ácidos húmicos en un carbón de bajo rango a través de la oxidación con aire y con peróxido de hidrogeno o ácido nítrico |
| title_full |
Aumento del contenido de ácidos húmicos en un carbón de bajo rango a través de la oxidación con aire y con peróxido de hidrogeno o ácido nítrico |
| title_fullStr |
Aumento del contenido de ácidos húmicos en un carbón de bajo rango a través de la oxidación con aire y con peróxido de hidrogeno o ácido nítrico |
| title_full_unstemmed |
Aumento del contenido de ácidos húmicos en un carbón de bajo rango a través de la oxidación con aire y con peróxido de hidrogeno o ácido nítrico |
| title_sort |
aumento del contenido de ácidos húmicos en un carbón de bajo rango a través de la oxidación con aire y con peróxido de hidrogeno o ácido nítrico |
| publisher |
Sociedade Brasileira de Química |
| series |
Química Nova |
| issn |
1678-7064 |
| publishDate |
2013-01-01 |
| description |
Low-rank coals are an important source of humic acids, which are important in retention processes of water and nutrients in plants. In this study coal samples of Montelibano, Colombia, were oxidized with air at different temperatures and subsequently with H2O2 and HNO3. The materials were characterized by FTIR, proximate and elemental analysis, and quantification of humic acids. The oxidation process led to an increased content of oxygenated groups and humic acids in the carbonaceous structure. The solid oxidized with air at 200 ºC for 12 h and re-oxidized with HNO3 for 12 h showed the highest percentage of humic acids (85.3%). |
| topic |
coal humic acids oxidation |
| url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000300007&lng=en&tlng=en |
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