|
Type |
Poster Presentation |
Area |
Environmental Energy |
Room No. |
Exhibition Hall 2+3 |
Time |
10월 19일 (목요일) 11:00~12:30 |
Code |
ENVR.P-514 |
Subject |
Oxidation of Bisphenol A by activated persulfate using Iron(II) entrapped chitosan/alginate substrate |
Authors |
Yu-Gyeong Kang, YOON-SEOK CHANG 1,* Division of Environmental Science and Engineering, Pohang University of Science and Technology , Korea 1Division of Environmental Science and Engineering, Pohang University of Science and Technology, Korea |
Abstract |
The oxidative ability of persulfate (PS) has been used to effectively treat a wide range of environmental contaminants. A novel Fe(II) containing chitosan/alginate composite (Fe-Chitoal) was prepared by the simple cross-linking reaction for the activation of PS to degrade bisphenol A (BPA). The prepared Fe-Chitoal was characterized by SEM, EDX, FT-IR and XPS. The result indicated that the Fe was imprinted successfully into the composite. The Fe(II) (0.35 mM) was released from Chitoal (1g/L) without PS and Fe(III) was re-adsorbed after reaction with PS. Higher removal efficiency for BPA was obtained with PS/Fe-Chitoal than using homogeneous Fe(II) with PS. Effects of different experimental conditions like PS and Fe-Chitoal dosages, pH and anions (Cl-, SO42-, NO3-, HCO3-) on the removal of BPA were investigated. The removal increased as the PS and Fe-Chitoal dosage increased and high efficiency was maintained in the pH range of 2-10 and decreased dramatically at pH 12. The removal efficiency was also maintained with 100 mM of high anion concentration. The main mechanism of PS/Fe-Chitoal was producing radicals such as ·OH and SO4•−. |
E-mail |
ygkang74@postech.ac.kr |
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