发明名称 |
Separation of citric acid from fermentation broth with a weakly basic anionic exchange resin adsorbent |
摘要 |
Citric acid is separated from a fermentation broth by using an adsorbent comprising a water-insoluble macroreticular or gel weakly basic anionic exchange resin possessing tertiary amine functional groups or pyridine functional groups, said anionic exchange resin comprising a cross-linked acrylic or styrene resin matrix. Citric acid is desorbed by water or dilute sulfuric acid. The pH of the feed is maintained below the first ionization constant (pKa1) of citric acid to maintain selectivity.
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申请公布号 |
US4851573(A) |
申请公布日期 |
1989.07.25 |
申请号 |
US19870121830 |
申请日期 |
1987.11.16 |
申请人 |
UOP |
发明人 |
KULPRATHIPANJA, SANTI;OROSKAR, ANIL R.;PRIEGNITZ, JAMES W. |
分类号 |
C07C51/47 |
主分类号 |
C07C51/47 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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