Effect Of pH, Phosphate and/or Malate on Sulfate Sorption on Andisols

The sulfate sorption was studied on Andisols with variable mineralogical composition and low organic matter content in presence and absence of phosphate or malate ligands at different pH. Crystalline clay mineralogy was similar for all the studied samples, except for the 2C horizon of the pedon 2, w...

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Autores principales:	Pigna,Massimo, Jara,Alejandra A, Mora,María de la Luz, Violante,Antonio
Lenguaje:	English
Publicado:	Sociedad Chilena de la Ciencia del Suelo 2007
Materias:	Sulfate adsorption Andisol mineralogical composition phosphate malate
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912007000100005
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spelling	oai:scielo:S0718-279120070001000052007-07-31Effect Of pH, Phosphate and/or Malate on Sulfate Sorption on AndisolsPigna,MassimoJara,Alejandra AMora,María de la LuzViolante,Antonio Sulfate adsorption Andisol mineralogical composition phosphate malate The sulfate sorption was studied on Andisols with variable mineralogical composition and low organic matter content in presence and absence of phosphate or malate ligands at different pH. Crystalline clay mineralogy was similar for all the studied samples, except for the 2C horizon of the pedon 2, which did not show crystalline minerals. The soil samples showed content of allophane ranging from 16% to 42%. The sulfate adsorption decreased when descending the first 3 horizons (A1, 2A2 and 3Bw1) of the pedon 1. This behavior was attributed to the decreasing organic carbon content. At different pH sulfate sorption was drastically decreased by increasing the pH from 4.0 to 7.0, precisely by 80% for sample 5 to 100% for sample 1. Experiments on the competitive sorption of phosphate and sulfate on volcanic soils were carried out. Sulfate sorption was reduced even in the presence of low concentrations of phosphate ions (phosphate/sulfate molar ratio << 1). Sulfate sorption was influenced by many factors as the organic carbon content, pH, the mineralogical composition of soil samples and the order of sulfate and phosphate addition into the soils. Sulfate competes with phosphate particularly when added before phosphate and at low pH values (pH < 4.5). Phosphate more than malate affected the kinetics of sulfate sorption onto a volcanic soil containing a large amount of allophanic materialsinfo:eu-repo/semantics/openAccessSociedad Chilena de la Ciencia del SueloRevista de la ciencia del suelo y nutrición vegetal v.7 n.1 20072007-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912007000100005en10.4067/S0718-27912007000100005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Sulfate adsorption Andisol mineralogical composition phosphate malate
spellingShingle	Sulfate adsorption Andisol mineralogical composition phosphate malate Pigna,Massimo Jara,Alejandra A Mora,María de la Luz Violante,Antonio Effect Of pH, Phosphate and/or Malate on Sulfate Sorption on Andisols
description	The sulfate sorption was studied on Andisols with variable mineralogical composition and low organic matter content in presence and absence of phosphate or malate ligands at different pH. Crystalline clay mineralogy was similar for all the studied samples, except for the 2C horizon of the pedon 2, which did not show crystalline minerals. The soil samples showed content of allophane ranging from 16% to 42%. The sulfate adsorption decreased when descending the first 3 horizons (A1, 2A2 and 3Bw1) of the pedon 1. This behavior was attributed to the decreasing organic carbon content. At different pH sulfate sorption was drastically decreased by increasing the pH from 4.0 to 7.0, precisely by 80% for sample 5 to 100% for sample 1. Experiments on the competitive sorption of phosphate and sulfate on volcanic soils were carried out. Sulfate sorption was reduced even in the presence of low concentrations of phosphate ions (phosphate/sulfate molar ratio << 1). Sulfate sorption was influenced by many factors as the organic carbon content, pH, the mineralogical composition of soil samples and the order of sulfate and phosphate addition into the soils. Sulfate competes with phosphate particularly when added before phosphate and at low pH values (pH < 4.5). Phosphate more than malate affected the kinetics of sulfate sorption onto a volcanic soil containing a large amount of allophanic materials
author	Pigna,Massimo Jara,Alejandra A Mora,María de la Luz Violante,Antonio
author_facet	Pigna,Massimo Jara,Alejandra A Mora,María de la Luz Violante,Antonio
author_sort	Pigna,Massimo
title	Effect Of pH, Phosphate and/or Malate on Sulfate Sorption on Andisols
title_short	Effect Of pH, Phosphate and/or Malate on Sulfate Sorption on Andisols
title_full	Effect Of pH, Phosphate and/or Malate on Sulfate Sorption on Andisols
title_fullStr	Effect Of pH, Phosphate and/or Malate on Sulfate Sorption on Andisols
title_full_unstemmed	Effect Of pH, Phosphate and/or Malate on Sulfate Sorption on Andisols
title_sort	effect of ph, phosphate and/or malate on sulfate sorption on andisols
publisher	Sociedad Chilena de la Ciencia del Suelo
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912007000100005
work_keys_str_mv	AT pignamassimo effectofphphosphateandormalateonsulfatesorptiononandisols AT jaraalejandraa effectofphphosphateandormalateonsulfatesorptiononandisols AT moramariadelaluz effectofphphosphateandormalateonsulfatesorptiononandisols AT violanteantonio effectofphphosphateandormalateonsulfatesorptiononandisols
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Effect Of pH, Phosphate and/or Malate on Sulfate Sorption on Andisols

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