title

حذف کروم شش ظرفیتی از محلولهای آبی توسط جذب روی نانو ذرات آلومینا گاما

گلستانی فر, حافظ and هیبتی, بهزاد and امینی, حسن and دهقانی, محمدهادی and اسدی, انور (1394) حذف کروم شش ظرفیتی از محلولهای آبی توسط جذب روی نانو ذرات آلومینا گاما. Environment Protection Engineering ــ 41 (2). pp. 133-145. شاپا 8828-0324

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Title

REMOVAL OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTION BY ADSORPTION ON y-ALUMINA NANOPARTICLES

English Abstract

The use of y-alumina (γ-Al 2O3) nanoparticles as adsorbent to remove Cr(VI) from aqueous solution was investigated using batch experiments. Adsorption experiments were carried out for various initial doses of Al2O3, initial concentrations of chromium(VI), contact times and pH. The structure and morphology of the sorbent was characterized by XRD, SEM, and TEM techniques. Results demonstrated that the removal efficiency of chromium(VI) was increased by increasing the contact time, initial concentration, and pH. The results of the study showed that adsorption of chromium by y-alumina nanoparticles reached equilibrium after 60 min and after thata little change of chromium removal efficiency was observed. Furthermore, kinetics of chromium sorption was well fitted by pseudo-second order kinetic model, and well explained by the Freundlich isotherm (R 2 > 0.992). Overall, alumina nanoparticles recognized as an effective sorbent to remove chromium(VI) from aqueous solutions.

Item Type:Article
زبان سند : انگلیسی
نویسنده اول :حافظ گلستانی فر
نویسنده :بهزاد هیبتی
نویسنده :حسن امینی
نویسنده :محمدهادی دهقانی
نویسنده مسئول :انور اسدی
Additional Information:Impact Factor (2014)0.652 indexed in: ISI, Chemical Abstracts , Compendex , BazTech
Subjects:WA Public Health > WA 30 Social, Economic, and Environmental factor in public health
WA Public Health > WA 30 Social, Economic, and Environmental factor in public health

WA Public Health
WA Public Health
Divisions:Faculty of Health > Department of Environmental health
ID Code:6848
Deposited By: Mr Behzad Heibati
Deposited On:14 Aug 1394 05:58
Last Modified:14 Aug 1394 05:58

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