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library name : انستیتو تغذیه دانشگاه علوم پزشکی شهید بهشتی
Material Type : Latin Articles
Language of Document : English
Record Number : 62256
Doc. No : 918A
Main Entry : TIWARI R.P.
Title & Author : SORPTION AND DESORPTION STUDIES OF METALLIC ZINC ON AN ALLUVIAL SOIL [Article]; GUPTA M.K.
Title : IRANIAN JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING (IJEHSE)
Volume Number : , Vol.4 ؛ No.3
Date : , (2007)
page : : 139 - 146
Abstract : The sorption of metallic zinc from the pH-adjusted aqueous solution at varying initial concentrations onto a clay soil through batch equilibrium experiments has been studied. The pH of the initial concentrations ranging between 50 mg/L to 250 mg/L has been varied from 3 to 7. The sorption data fitted very well with both Langmuir and Freundlich isotherm models and Freundlich model gave higher correlation coefficients. The maximum sorption of metallic zinc occurred at pH=6. The pseudo-second order kinetics model was most agreeable with the experimental sorption data, whereas the pseudo-first order model was found to be insufficient. A nonionic surfactant was tested for its desorption potential and was found to be fairly effective at 2percent concentration with removal of more than 60percent sorbed Zinc.
Descriptor : SORPTION
Descriptor : ISOTHERMS
Descriptor : DESORPTION
Descriptor : ZINC
Added Entry : BALA RAMUDU P.
: SRIVASTAVA R.K.
 
 
 
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