CHARGE DEVELOPMENT AND ACID-BASE CHARACTERISTICS OF SOIL AND COMPOST HUMIC ACIDS

In previous works, the acid-base properties, charging behavior and chemical heterogeneity of humic substances have been studied using different mathematical equations to fit the experimental data. The objective of this research is to study the charge behavior, acid-base properties and analyze the ch...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	CAMPITELLI,P. A., VELASCO,M. I., CEPPI,S.B.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2003
Materias:	compost humic acids charge development acid-base characteristics
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072003000300018
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-97072003000300018
record_format	dspace
spelling	oai:scielo:S0717-970720030003000182004-01-30CHARGE DEVELOPMENT AND ACID-BASE CHARACTERISTICS OF SOIL AND COMPOST HUMIC ACIDSCAMPITELLI,P. A.VELASCO,M. I.CEPPI,S.B. compost humic acids charge development acid-base characteristics In previous works, the acid-base properties, charging behavior and chemical heterogeneity of humic substances have been studied using different mathematical equations to fit the experimental data. The objective of this research is to study the charge behavior, acid-base properties and analyze the chemical heterogeneity of humic acids (HA) extracted from soil and composted municipal solid waste by potentiometric titrations. The humic acids extracted from compost have some characteristics and behavior similar to those obtained from soil. The negative charge development of HA extracted from composted material are lower than those extracted from soil and increase as ionic strength increase. The amount of carboxylic groups is lower in compost HA than in soil HA The heterogeneity of HA extracted from compost is higher than those extracted from soil. As the time of composting period increase the humification processes that take place trends to produce compost HA that has similar characteristics to soil HA. We suggest that HA extracted from composted material are macromolecules "like soil humic acids", i.e. "humiclike fraction"info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.48 n.3 20032003-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072003000300018en10.4067/S0717-97072003000300018
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	compost humic acids charge development acid-base characteristics
spellingShingle	compost humic acids charge development acid-base characteristics CAMPITELLI,P. A. VELASCO,M. I. CEPPI,S.B. CHARGE DEVELOPMENT AND ACID-BASE CHARACTERISTICS OF SOIL AND COMPOST HUMIC ACIDS
description	In previous works, the acid-base properties, charging behavior and chemical heterogeneity of humic substances have been studied using different mathematical equations to fit the experimental data. The objective of this research is to study the charge behavior, acid-base properties and analyze the chemical heterogeneity of humic acids (HA) extracted from soil and composted municipal solid waste by potentiometric titrations. The humic acids extracted from compost have some characteristics and behavior similar to those obtained from soil. The negative charge development of HA extracted from composted material are lower than those extracted from soil and increase as ionic strength increase. The amount of carboxylic groups is lower in compost HA than in soil HA The heterogeneity of HA extracted from compost is higher than those extracted from soil. As the time of composting period increase the humification processes that take place trends to produce compost HA that has similar characteristics to soil HA. We suggest that HA extracted from composted material are macromolecules "like soil humic acids", i.e. "humiclike fraction"
author	CAMPITELLI,P. A. VELASCO,M. I. CEPPI,S.B.
author_facet	CAMPITELLI,P. A. VELASCO,M. I. CEPPI,S.B.
author_sort	CAMPITELLI,P. A.
title	CHARGE DEVELOPMENT AND ACID-BASE CHARACTERISTICS OF SOIL AND COMPOST HUMIC ACIDS
title_short	CHARGE DEVELOPMENT AND ACID-BASE CHARACTERISTICS OF SOIL AND COMPOST HUMIC ACIDS
title_full	CHARGE DEVELOPMENT AND ACID-BASE CHARACTERISTICS OF SOIL AND COMPOST HUMIC ACIDS
title_fullStr	CHARGE DEVELOPMENT AND ACID-BASE CHARACTERISTICS OF SOIL AND COMPOST HUMIC ACIDS
title_full_unstemmed	CHARGE DEVELOPMENT AND ACID-BASE CHARACTERISTICS OF SOIL AND COMPOST HUMIC ACIDS
title_sort	charge development and acid-base characteristics of soil and compost humic acids
publisher	Sociedad Chilena de Química
publishDate	2003
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072003000300018
work_keys_str_mv	AT campitellipa chargedevelopmentandacidbasecharacteristicsofsoilandcomposthumicacids AT velascomi chargedevelopmentandacidbasecharacteristicsofsoilandcomposthumicacids AT ceppisb chargedevelopmentandacidbasecharacteristicsofsoilandcomposthumicacids
_version_	1718445329345413120

CHARGE DEVELOPMENT AND ACID-BASE CHARACTERISTICS OF SOIL AND COMPOST HUMIC ACIDS

Ejemplares similares