Extraction technology for recovery of gallic acid from gallic acid mother liquor

YU Wei; ZHOU Kanggen; WU Yundong; DU Hu

doi:10.3969/j.issn.0438-1157.2013.05.022

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Extraction technology for recovery of gallic acid from gallic acid mother liquor

更新时间：2025-12-10

- Extraction technology for recovery of gallic acid from gallic acid mother liquor
- CIESC Journal Issue 5, Pages: 1660-1664(2013)
- 作者机构：
  
  中南大学冶金科学与工程学院,湖南,长沙,410083
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.05.022
  CLC： Q202
- Online First：05 May 2013，
  
  Published：05 May 2013
- 稿件说明：
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YU Wei, ZHOU Kanggen, WU Yundong, et al. Extraction technology for recovery of gallic acid from gallic acid mother liquor[J]. CIESC Journal, 2013, (5): 1660-1664.
DOI：

YU Wei, ZHOU Kanggen, WU Yundong, et al. Extraction technology for recovery of gallic acid from gallic acid mother liquor[J]. CIESC Journal, 2013, (5): 1660-1664. DOI： 10.3969/j.issn.0438-1157.2013.05.022.

摘要

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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