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DOI : 10.17640/KSWST.2017.25.2.39 ,    Vol.25, No.2, 39 ~ 47, 2017
Title
Removal on Chromium by Using Magnetite Irradiated with Ultrasonic Waves
김수진 Su-jin Kim , 이지영 Ji-young Lee , 강민구 Min-koo Kang , 이상일 Sang-ill Lee
Abstract
The purpose of this paper is to remove chromium by using magnetite irradiated with ultrasonic waves. Also we were investigated to evaluate this magnetite`s ability in treating total chromium and hexavalent chromium. In this study, it was evaluated to chromium removal efficiency by dosage, pH, sonication time. In case of hexavalent chromium, the optimum condition was dosage 10 mL, pH 2. And in case total chromium of mixed wastewater, the optimum condition was dosage 20 mL, pH 6. In case of sonication time, chromium removal efficiency was slightly increased to 6 hr. However the removal efficiency was decrease at higher than 6 hr.
Key Words
Total chromium, Hexavalent chromium, Magnetite, Adsorption, Sonication
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