The invention provides a process for the recovery of citric acid from an aqueous solution feed stream originating in fermentation of carbohydrates and utilizing an amine solvent extraction step for separation of impurities comprising: subjecting said aqueous solution feed stream A to a treatment for partial recovery of citric acid, wherein said treatment is other than amine solvent extraction, to form a first portion of purified citric acid B and a secondary feed stream F; subjecting at least a portion G of said secondary feed stream F to a treatment consisting of amine solvent extraction to form a second portion of purified citric acid solution and to reject substantial of impurities initially present in said portion of said secondary feed stream; subjecting said second portion of purified citric acid solution to crystallization; and recycling mother liquor from said crystallization.
申请公布号
WO2004087631(A2)
申请公布日期
2004.10.14
申请号
WO2004IL00203
申请日期
2004.03.03
申请人
A.E. STALEY MANUFACTURING COMPANY;BANIEL, AVRAHAM;VITNER, ASHER;GONEN, DAVID;HEIDEL, DAVID
发明人
BANIEL, AVRAHAM;VITNER, ASHER;GONEN, DAVID;HEIDEL, DAVID