| 학회 |
한국화학공학회 |
| 학술대회 |
2004년 봄 (04/23 ~ 04/24, 공주대학교) |
| 권호 |
10권 1호, p.667 |
| 발표분야 |
에너지/환경 |
| 제목 |
Decomposition of Ethylenediaminetetraacetic Acid in Supercritical Water Condition |
| 초록 |
Experiments were conducted to decompose Ethylenediaminetetraacetic acid (EDTA) by way of supercritical water oxidation (SCWO) in a tubular plug flow reactor. These EDTA decomposition experiments were performed in the range of 387-500 ℃, 250 bar and with a stoichiometric amount of 100-400 % H2O2. The decomposition rate and efficiency were affected by the oxidant amount more significantly at lower temperatures. Andexcess oxidant played a key role in decreasing the activation energy for EDTA decomposition. The activation energy reached 41.491.96 kJ/mol for EDTA based on CODCr decomposition. The nitrogen from EDTA was found to transform into NO3--N by thermal decomposition while a portion of the nitrogen of ETDA and the NO3-N was transformed into NH4+-N in the supercritical water oxidation process. The ammonia produced from the decomposition of EDTA was less than 5% of the total amount of the EDTA nitrogen because in the SCWO process most nitrogen of EDTA was finally converted to N2 gas. |
| 저자 |
이현철1, 이창하1, 인정현1, Shao long Tie1, 김진태2, 이홍주2, 강덕원2
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| 소속 |
1연세대, 2한전전력(연) |
| 키워드 |
Ethylenediamineteteaacetic Acid; Supercritical water oxidation; wastewater treatment; kinetics
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| E-Mail |
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| 원문파일 |
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