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 Increase of the content of humic acids in a low rank coal by oxidation with air and with hydrogen peroxide or nitric acid
<abstract language="eng">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 H2O...
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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=S0100-40422013000300007 |
| _version_ | 1818066253076496384 |
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| author | Ruben Anillo-Correa Fredy Colpas-Castillo Edgardo Meza-Fuentes |
| author_facet | Ruben Anillo-Correa Fredy Colpas-Castillo Edgardo Meza-Fuentes |
| author_sort | Ruben Anillo-Correa |
| collection | DOAJ |
| description | <abstract language="eng">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%). |
| first_indexed | 2024-12-10T15:04:51Z |
| format | Article |
| id | doaj.art-a7e843f59d5749ce9e56f4244106416c |
| institution | Directory Open Access Journal |
| issn | 0100-4042 1678-7064 |
| language | English |
| last_indexed | 2024-12-10T15:04:51Z |
| publishDate | 2013-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-a7e843f59d5749ce9e56f4244106416c2022-12-22T01:44:05ZengSociedade Brasileira de QuímicaQuímica Nova0100-40421678-70642013-01-01363387392Aumento 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 Increase of the content of humic acids in a low rank coal by oxidation with air and with hydrogen peroxide or nitric acidRuben Anillo-CorreaFredy Colpas-CastilloEdgardo Meza-Fuentes<abstract language="eng">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%).http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000300007coalhumic acidsoxidation |
| 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 Increase of the content of humic acids in a low rank coal by oxidation with air and with hydrogen peroxide or nitric acid Química Nova coal humic acids oxidation |
| 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 Increase of the content of humic acids in a low rank coal by oxidation with air and with hydrogen peroxide or nitric acid |
| 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 Increase of the content of humic acids in a low rank coal by oxidation with air and with hydrogen peroxide or nitric acid |
| 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 Increase of the content of humic acids in a low rank coal by oxidation with air and with hydrogen peroxide or nitric acid |
| 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 Increase of the content of humic acids in a low rank coal by oxidation with air and with hydrogen peroxide or nitric acid |
| 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 Increase of the content of humic acids in a low rank coal by oxidation with air and with hydrogen peroxide or nitric acid |
| title_sort | aumento del contenido de acidos humicos en un carbon de bajo rango a traves de la oxidacion con aire y con peroxido de hidrogeno o acido nitrico increase of the content of humic acids in a low rank coal by oxidation with air and with hydrogen peroxide or nitric acid |
| topic | coal humic acids oxidation |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000300007 |
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