文章基本信息

标题：Calcium phosphates as adsorbents for the controlled release of carbofuran
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作者：Ramdane H. ; El Rhilassi A. ; Mourabet M. 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2014
卷号：5
期号：6
页码：1715-1726
出版社：University of Mohammed Premier Oujda
摘要：The synthetic calcium phosphates which could be used as fertilizers were studied as carriers for controlled release of pesticides. In this sense the adsorption and desorption of carbofuran on apatitic tricalcium phosphate (PTCa) and brushite (DCPD) were investigated by using batch mode experiments. The equilibrium adsorption data fitted well to the Langmuir adsorption isotherm. The kinetic study shows that equilibrium is quickly obtained for both phosphates. The thermodynamic evaluation of carbofuran adsorption on both phosphates revealed that the adsorption phenomenon was an exothermic and a physical process. The kinetics of desorption showed that the calcium phosphates emplo yed can be served as supports for the slow release of this mobile pesticide, thus co ntrolling its immediate availability and leaching.
关键词：Synthetic calcium phosphates; Carbofuran; ; ; Adsorption; Controlled release