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Catalytic ozonation of humic acids with Fe/MgO |
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| Authors: | Ji-Eun Lee Byung-Suk Jin Sung-Hoon Cho Sung-Hwan Han Oh-Shim Joo and Kwang-Deog Jung |
| Institution: | (1) Dept of Applied Chemistry, Dongduk Women s University, Wolgok-dong 23-1, Sungbuk-Gu, Seoul, Korea;(2) Dept of Applied Chemistry, Dongduk Womens University, Wolgok-dong 23-1, Sungbuk-Gu, Seoul, Korea;(3) Korea Institute of Science and Technology, Eco-nano Center, P.O. Box 131, Seoul, Korea;(4) Department of Chemistry, Hanyang University, Hangdang-dong 17, Sungdong-Ku, Seoul, Korea;(5) Korea Institute of Science and Technology, Eco-nano Center, P.O. Box 131, Seoul, Korea;(6) Korea Institute of Science and Technology, Eco-nano Center, P.O. Box 131, Seoul, Korea |
| Abstract: | Summary Degradation of humic acids by ozone was performed at room temperature in a stirred tank reactor with heterogeneous catalysts. Experimental results show that the ozonation with Fe/MgO induced a significant reduction in UV absorbance of humic acids, as compared to ozone alone. Fe/MgO was the most efficient catalyst in degradation humic acids in the presence of ozone. GPC (gel permeation chromatography) showed that humic acids with high molecular weight could be severely decomposed into organic compounds with low molecular weight by the Fe/MgO catalyst, indicating that humic acids could be catalytically decomposed. |
| Keywords: | ozone Fe/MgO catalytic ozonation humic acids |
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