| 以蓖麻油酸作为萃取剂回收处理癸二酸工业废水的萃取过程(英文) |
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| 引用本文： | 徐航,周全,王金福.以蓖麻油酸作为萃取剂回收处理癸二酸工业废水的萃取过程(英文)[J].中国化学工程学报,2013,21(9):967-973. |
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| 作者姓名： | 徐航 周全 王金福 |
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| 作者单位： | 1.Chemical Engineering and Pharmaceutics School, Henan University of Science and Technology, Luoyang 471023, China;2.Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China(21006057);the National Science Foundation for Post-doctoral Scientists of China(20100470351) |
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| 摘 要： | Wastewater containing high concentrations of phenol and sodium sulfate is generated in sebacic acid （SA） industry. Castor oil acid, a raw material for producing SA, can be used to extract phenol from wastewater in order to reduce the amount of phenol used in the process and discharge of phenol. The results show that the extrac- tion mechanism is that hydroxyl group of phenol is linked to carboxyl group of castor oil acid by hydrogen bond. The extraction process approaches equilibrium in 30 min. Extraction ratio increases with the increase of sodium sulfate and castor oil acid, and decreases as phenol increases. When the oil-water ratio is 1 ： 3, the optimal distribu- tion coefficient of 40 is obtained. Phenol saturation concentration in castor oil acid is 1.03 mol.L-1 after extraction for 4 times. The equilibrium constant （Kex） at 25℃ is 8.41 and the endothermic enthalpy （AH） is 1.513 kJ.mo1-1. The Gibbs free energy （AG） is -5.277 kJ. tool-1 and the value of AS is calculated to be 22.3 J. mo1-1. K-1.
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| 关 键 词： | castor oil acid wastewater extraction phenol sodium sulfate |
| 收稿时间： | 2012-02-14 |
Treatment of Sebacic Acid Industrial Wastewater by Extraction Process Using Castor Oil Acid as Extractant |
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| XU Hang;ZHOU Quan;WANG Jinfu.Treatment of Sebacic Acid Industrial Wastewater by Extraction Process Using Castor Oil Acid as Extractant[J].Chinese Journal of Chemical Engineering,2013,21(9):967-973. |
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| Authors: | XU Hang;ZHOU Quan;WANG Jinfu |
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| Affiliation: | 1.Chemical Engineering and Pharmaceutics School, Henan University of Science and Technology, Luoyang 471023, China;2.Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Wastewater containing high concentrations of phenol and sodium sulfate is generated in sebacic acid (SA) industry. Castor oil acid, a raw material for producing SA, can be used to extract phenol from wastewater in order to reduce the amount of phenol used in the process and discharge of phenol. The results show that the extraction mechanism is that hydroxyl group of phenol is linked to carboxyl group of castor oil acid by hydrogen bond. The extraction process approaches equilibrium in 30 min. Extraction ratio increases with the increase of sodium sulfate and castor oil acid, and decreases as phenol increases. When the oil-water ratio is 1:3, the optimal distribution coefficient of 40 is obtained. Phenol saturation concentration in castor oil acid is 1.03 mol·L-1 after extraction for 4 times. The equilibrium constant (Kex) at 25℃ is 8.41 and the endothermic enthalpy (ΔH) is 1.513 kJ·mol-1. The Gibbs free energy (ΔG) is -5.277 kJ·mol-1 and the value of ΔS is calculated to be 22.3 J·mol-1·K-1. |
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| Keywords: | castor oil acid wastewater extraction phenol sodium sulfate |
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