Adsorption of nickel by Indian soils

Adsorption of metals from liquid into solid phase is one of the most important chemical processes which affect the behaviour and bioavailability of metals in soils, thereby exerts a major influence on their uptake by plant roots. Indian soils, representing the various soil types of tropics, were sub...

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Autores principales:	Ramachandran,V, D'Souza,S.F
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2013
Materias:	adsorption nickel Indian soils isotherm distribution coefficient
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000100015
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spelling	oai:scielo:S0718-951620130001000152014-09-16Adsorption of nickel by Indian soilsRamachandran,VD'Souza,S.F adsorption nickel Indian soils isotherm distribution coefficient Adsorption of metals from liquid into solid phase is one of the most important chemical processes which affect the behaviour and bioavailability of metals in soils, thereby exerts a major influence on their uptake by plant roots. Indian soils, representing the various soil types of tropics, were subjected to Ni treatment of different concentrations and equilibrated at room temperature. The Ni adsorbed by each soil was calculated as the difference between the amount of Ni present in the solution initially and that remaining after equilibration. Results indicated that all the soils under study follow Freundlich and linear adsorption isotherms with highly significant positive correlation. In general, adsorption capacity of the soils for Ni increased with an increase in pH of the soil, whereas, the reverse was found to be true for the rate of adsorption. Significant positive correlations (p = 0.1 - 0.001) were obtained between Freundlich's K (adsorption capacity) and pH, CEC and CaCO3 content of the soils. Also, eight soils of Maharashtra, India, were found to fit in all the three adsorption isotherms, namely, Freundlich, Langmuir and linear. The distribution coefficient (Kd) values of these soils, in general, increased with an increase in pH and CEC of the soils. Adsorption of Ni in soils followed the order: vertisol > entisol > alfisol/ultisol.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.13 n.1 20132013-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000100015en10.4067/S0718-95162013005000015
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	adsorption nickel Indian soils isotherm distribution coefficient
spellingShingle	adsorption nickel Indian soils isotherm distribution coefficient Ramachandran,V D'Souza,S.F Adsorption of nickel by Indian soils
description	Adsorption of metals from liquid into solid phase is one of the most important chemical processes which affect the behaviour and bioavailability of metals in soils, thereby exerts a major influence on their uptake by plant roots. Indian soils, representing the various soil types of tropics, were subjected to Ni treatment of different concentrations and equilibrated at room temperature. The Ni adsorbed by each soil was calculated as the difference between the amount of Ni present in the solution initially and that remaining after equilibration. Results indicated that all the soils under study follow Freundlich and linear adsorption isotherms with highly significant positive correlation. In general, adsorption capacity of the soils for Ni increased with an increase in pH of the soil, whereas, the reverse was found to be true for the rate of adsorption. Significant positive correlations (p = 0.1 - 0.001) were obtained between Freundlich's K (adsorption capacity) and pH, CEC and CaCO3 content of the soils. Also, eight soils of Maharashtra, India, were found to fit in all the three adsorption isotherms, namely, Freundlich, Langmuir and linear. The distribution coefficient (Kd) values of these soils, in general, increased with an increase in pH and CEC of the soils. Adsorption of Ni in soils followed the order: vertisol > entisol > alfisol/ultisol.
author	Ramachandran,V D'Souza,S.F
author_facet	Ramachandran,V D'Souza,S.F
author_sort	Ramachandran,V
title	Adsorption of nickel by Indian soils
title_short	Adsorption of nickel by Indian soils
title_full	Adsorption of nickel by Indian soils
title_fullStr	Adsorption of nickel by Indian soils
title_full_unstemmed	Adsorption of nickel by Indian soils
title_sort	adsorption of nickel by indian soils
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000100015
work_keys_str_mv	AT ramachandranv adsorptionofnickelbyindiansoils AT dsouzasf adsorptionofnickelbyindiansoils
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Adsorption of nickel by Indian soils

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