Humic acid interaction with clay minerals. Modification of the surface properties by calcium presence

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...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Fernández Solarte, A.M., Fernández, M.A., Dos Santos Afonso, M., Torres Sánchez, R.M.
Formato:	JOUR
Materias:	Humic acid Montmorillonite Porosity Specific surface area Thermal treated montmorillonite
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_17434955_v7_n3_p215_FernandezSolarte
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_17434955_v7_n3_p215_FernandezSolarte
record_format	dspace
spelling	todo:paper_17434955_v7_n3_p215_FernandezSolarte2023-10-03T16:31:21Z Humic acid interaction with clay minerals. Modification of the surface properties by calcium presence Fernández Solarte, A.M. Fernández, M.A. Dos Santos Afonso, M. Torres Sánchez, R.M. Humic acid Montmorillonite Porosity Specific surface area Thermal treated montmorillonite 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. © 2015 Inderscience Enterprises Ltd. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17434955_v7_n3_p215_FernandezSolarte
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Humic acid Montmorillonite Porosity Specific surface area Thermal treated montmorillonite
spellingShingle	Humic acid Montmorillonite Porosity Specific surface area Thermal treated montmorillonite Fernández Solarte, A.M. Fernández, M.A. Dos Santos Afonso, M. Torres Sánchez, R.M. Humic acid interaction with clay minerals. Modification of the surface properties by calcium presence
topic_facet	Humic acid Montmorillonite Porosity Specific surface area Thermal treated montmorillonite
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. © 2015 Inderscience Enterprises Ltd.
format	JOUR
author	Fernández Solarte, A.M. Fernández, M.A. Dos Santos Afonso, M. Torres Sánchez, R.M.
author_facet	Fernández Solarte, A.M. Fernández, M.A. Dos Santos Afonso, M. Torres Sánchez, R.M.
author_sort	Fernández Solarte, A.M.
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
url	http://hdl.handle.net/20.500.12110/paper_17434955_v7_n3_p215_FernandezSolarte
work_keys_str_mv	AT fernandezsolarteam humicacidinteractionwithclaymineralsmodificationofthesurfacepropertiesbycalciumpresence AT fernandezma humicacidinteractionwithclaymineralsmodificationofthesurfacepropertiesbycalciumpresence AT dossantosafonsom humicacidinteractionwithclaymineralsmodificationofthesurfacepropertiesbycalciumpresence AT torressanchezrm humicacidinteractionwithclaymineralsmodificationofthesurfacepropertiesbycalciumpresence
_version_	1782030855315652608

Humic acid interaction with clay minerals. Modification of the surface properties by calcium presence

Ejemplares similares