Humic acid interaction with clay minerals: modification of the surface properties by calcium presence

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The environmental importance of humic acid (HA) is mainly related to soil fertility, but it can also develop some human diseases by its intake as well as prevent calcium assimilation. Physicochemical characterisations of a montmorillonite (Mt) and its thermal treated product (Mt550), to which HA, Ca...

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Autores principales: Fernández Solarte, Alejandra María, Fernández, Mariela Alejandra, dos Santos Afonso, María, Torres Sánchez, Rosa María
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Química
Montmorillonite
Thermal treated montmorillonite
Porosity
Specific surface area
Humic acid
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/120049
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-120049
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Montmorillonite
Thermal treated montmorillonite
Porosity
Specific surface area
Humic acid
spellingShingle Química
Montmorillonite
Thermal treated montmorillonite
Porosity
Specific surface area
Humic acid
Fernández Solarte, Alejandra María
Fernández, Mariela Alejandra
dos Santos Afonso, María
Torres Sánchez, Rosa María
Humic acid interaction with clay minerals: modification of the surface properties by calcium presence
topic_facet Química
Montmorillonite
Thermal treated montmorillonite
Porosity
Specific surface area
Humic acid
description The environmental importance of humic acid (HA) is mainly related to soil fertility, but it can also develop some human diseases by its intake as well as prevent calcium assimilation. Physicochemical characterisations of a montmorillonite (Mt) and its thermal treated product (Mt550), to which HA, Ca+2 or both were added, will help to better understand the surface behaviour of the binary or ternary systems. Calcium or HA adsorption produces a decrease of the Mt and Mt550 specific surface area (SSA). X-ray diffraction indicates calcium presence and no entrance of humic acid in the interlayer of Mt, while in the ternary systems (calcium-HA-Mt) a hindrance to the calcium entrance was observed. The opposite behaviour produces the adsorption of HA or calcium on electric charge of both samples. The mean pore diameter (MPD) for Mt increases with Ca+2 adsorption while no change was found after HA adsorption, in contrast to that found for Mt550.
format Articulo
Articulo
author Fernández Solarte, Alejandra María
Fernández, Mariela Alejandra
dos Santos Afonso, María
Torres Sánchez, Rosa María
author_facet Fernández Solarte, Alejandra María
Fernández, Mariela Alejandra
dos Santos Afonso, María
Torres Sánchez, Rosa María
author_sort Fernández Solarte, Alejandra María
title Humic acid interaction with clay minerals: modification of the surface properties by calcium presence
title_short Humic acid interaction with clay minerals: modification of the surface properties by calcium presence
title_full Humic acid interaction with clay minerals: modification of the surface properties by calcium presence
title_fullStr Humic acid interaction with clay minerals: modification of the surface properties by calcium presence
title_full_unstemmed Humic acid interaction with clay minerals: modification of the surface properties by calcium presence
title_sort humic acid interaction with clay minerals: modification of the surface properties by calcium presence
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/120049
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AT dossantosafonsomaria humicacidinteractionwithclaymineralsmodificationofthesurfacepropertiesbycalciumpresence
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