| 从没食子酸结晶母液中回收没食子酸的萃取工艺 |
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| 引用本文： | 喻薇,周康根,吴运东,杜虎.从没食子酸结晶母液中回收没食子酸的萃取工艺[J].化工学报,2013,0(5):1660-1664. |
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| 作者姓名： | 喻薇 周康根 吴运东 杜虎 |
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| 作者单位： | 中南大学冶金科学与工程学院, 湖南 长沙 410083 |
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| 摘 要： | 引言没食子酸又名五倍子酸,是一种应用很广泛的化工原料1],可用作食品抗氧化剂、着色剂、净化剂、防腐剂等2],且具有抗肿瘤、抗炎、抗突变等多种生物学作用3]。没食子酸是单宁酸的水解产物,国内厂家大多数以含水解单宁的植物五倍子、塔拉为原料生产没
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| 关 键 词： | 甲基异丁基酮(MIBK) 没食子酸 萃取 反萃 |
| 收稿时间： | 2012-09-18 |
| 修稿时间： | 2012-10-31 |
Extraction technology for recovery of gallic acid from gallic acid mother liquor |
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| YU Wei,ZHOU Kanggen,WU Yundong,DU Hu.Extraction technology for recovery of gallic acid from gallic acid mother liquor[J].Journal of Chemical Industry and Engineering(China),2013,0(5):1660-1664. |
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| Authors: | YU Wei ZHOU Kanggen WU Yundong DU Hu |
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| Affiliation: | School of Metallurgical Science and Engineering, Central South University, Changsha 410083, Hunan, China |
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| Abstract: | A feasible extraction technology is investigated to recover gallic acid from gallic acid mother liquor.It is confirmed that methyl isobutyl ketone(MIBK)is a proper extractant.The influences of initial pH value, gallic acid concentration and phase ratio on extraction efficiency of MIBK are studied in detail.The results show that the pH value of extraction raffinate should be controlled to be less than 2.5 in the extraction process and at about 8 in the stripping process.The extraction rate is improved by increasing the phase ratio.The gallic acid concentration has no obvious effect on the extraction balance in both extraction and stripping processes.The multistage extraction rate reaches 95% at the phase ratio of 1 and the initial pH value of wastewater lower than 2.5. |
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| Keywords: | methyl isobutyl ketone gallic acid extraction stripping |
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