سال انتشار: ۱۳۸۸

محل انتشار: اولین کنفرانس بین المللی تصفیه فاضلاب و بازیافت آب، فناوری ها و یافته های نو

تعداد صفحات: ۷

نویسنده(ها):

A Torabian – Department of Civil- Environmental Engineering, Faculty of Environmental, Tehran University, P.O.Box:14155-6135, Tehran, Iran
Gh. R Nabi bidhendi – Department of Civil- Environmental Engineering, Faculty of Environmental, Tehran University, P.O.Box:14155-6135, Tehran, Iran
A Safari – Department of Civil- Environmental Engineering, Faculty of Environmental, Tehran University, P.O.Box:14155-6135, Tehran, Iran
A.A Ghadimkhani – Department of Civil- Environmental Engineering, Faculty of Environmental, Tehran University, P.O.Box:14155-6135, Tehran, Iran

چکیده:

Brijand is a city in east of Iran. Underground water is the only drinking water source, because this city is in a dry region. Ground water hexavalent chromium ion (cr+6) concentration in Brigand is about 0.07 mg/l that is higher than maximum contamination level (MCL). The maximum contamination level of Cr+6 is 0.05 mg/l according to WHO guideline. Groundwater remediation by nanoparticles has received increasing interest in recent years. This study, presents a thorough evaluation of hexavalent chromium removal in aqueous solutions using iron (Fe0) nanoparticles. Factors affecting adsorption including solution pH, ultrasonic irradiation time, initial Cr (VI) concentration and iron nanoparticles concentration were further investigated. The removal efficiency of Cr (VI) increased with increasing iron nanoparticles concentration but inversely with initial pH. Iron nanoparticles are good choice for the remediation of heavy metals in groundwater.