Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH

The present study was conducted in order to investigate the adsorption and desorption behavior of tetramethylthiuram disulfide (thiram) using the batch equilibration technique in two soil namely: Ultisols and Inceptisols. The adsorption-desorption isotherms were expressed by the Freundlich equation....

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Autores principales:	Maznah,Zainol, Halimah,Muhamad, Ismail,Sahid
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2016
Materias:	Thiram adsorption desorption soil temperature pH
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000300016
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spelling	oai:scielo:S0718-583920160003000162018-10-01Adsorption-desorption behavior of thiram: effect of soil type, temperature and pHMaznah,ZainolHalimah,MuhamadIsmail,Sahid Thiram adsorption desorption soil temperature pH The present study was conducted in order to investigate the adsorption and desorption behavior of tetramethylthiuram disulfide (thiram) using the batch equilibration technique in two soil namely: Ultisols and Inceptisols. The adsorption-desorption isotherms were expressed by the Freundlich equation. The adsorption isotherms of thiram was classified as L-type under Gile’s classification. The Freundlich’s adsorption coefficient (Kd) value for thiram in the Ultisols and Inceptisols soil were 3.78 and 2.10 mL g-1, respectively. Results indicated that soil organic matter was the main factor affecting thiram behavior in the studied soils. The calculated total percentage desorption values from the Ultisols and Inceptisols soil after the fourth desorption process were 39.2% and 51.6%, respectively. The negative Gibb’s free energy change (ΔG°) values obtained suggest that thiram adsorption is an exothermic process. The effects of temperature (25, 30, and 35 °C) and soil pH (3, 7, 10) were also studied on adsorption of thiram in the test soils. Results showed that adsorption of thiram was not affected by temperature but clearly affected by soil pH.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.76 n.3 20162016-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000300016en10.4067/S0718-58392016000300016
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Thiram adsorption desorption soil temperature pH
spellingShingle	Thiram adsorption desorption soil temperature pH Maznah,Zainol Halimah,Muhamad Ismail,Sahid Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH
description	The present study was conducted in order to investigate the adsorption and desorption behavior of tetramethylthiuram disulfide (thiram) using the batch equilibration technique in two soil namely: Ultisols and Inceptisols. The adsorption-desorption isotherms were expressed by the Freundlich equation. The adsorption isotherms of thiram was classified as L-type under Gile’s classification. The Freundlich’s adsorption coefficient (Kd) value for thiram in the Ultisols and Inceptisols soil were 3.78 and 2.10 mL g-1, respectively. Results indicated that soil organic matter was the main factor affecting thiram behavior in the studied soils. The calculated total percentage desorption values from the Ultisols and Inceptisols soil after the fourth desorption process were 39.2% and 51.6%, respectively. The negative Gibb’s free energy change (ΔG°) values obtained suggest that thiram adsorption is an exothermic process. The effects of temperature (25, 30, and 35 °C) and soil pH (3, 7, 10) were also studied on adsorption of thiram in the test soils. Results showed that adsorption of thiram was not affected by temperature but clearly affected by soil pH.
author	Maznah,Zainol Halimah,Muhamad Ismail,Sahid
author_facet	Maznah,Zainol Halimah,Muhamad Ismail,Sahid
author_sort	Maznah,Zainol
title	Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH
title_short	Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH
title_full	Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH
title_fullStr	Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH
title_full_unstemmed	Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH
title_sort	adsorption-desorption behavior of thiram: effect of soil type, temperature and ph
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000300016
work_keys_str_mv	AT maznahzainol adsorptiondesorptionbehaviorofthirameffectofsoiltypetemperatureandph AT halimahmuhamad adsorptiondesorptionbehaviorofthirameffectofsoiltypetemperatureandph AT ismailsahid adsorptiondesorptionbehaviorofthirameffectofsoiltypetemperatureandph
_version_	1714205362873171968

Adsorption-desorption behavior of thiram: effect of soil type, temperature and pH

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