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Method for extracting amber acid in fermentation liquor by cationic resin exchange

A cationic resin, fermentation broth technology, applied in fermentation, separation/purification of ammonium sulfate, carboxylic acid compounds, etc., to achieve the effects of short process route, high yield and easy operation

Inactive Publication Date: 2009-01-21
JIANGNAN UNIV
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Problems solved by technology

[0007] The present invention aims at the problems existing in the extraction of succinic acid in the current production of succinic acid by fermentation, and proposes a method for extracting succinic acid by cationic resin exchange

Method used

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  • Method for extracting amber acid in fermentation liquor by cationic resin exchange

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Experimental program
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Embodiment 1-6

[0024] Cationic resin exchange extraction process of succinic acid by recovery of magnesium salt and sodium salt

[0025] Experimental conditions: The fermentation broth used in this experiment was fermented with corn hydrolyzed syrup, cassava starch hydrolyzed syrup, industrial sugar waste molasses (such as sugarcane molasses), corn straw hydrolyzed syrup, Jerusalem artichoke syrup, and sweet sorghum straw syrup. MgCO 3 Adjust pH.

[0026] The magnesium succinate fermentation liquid fermented with the above-mentioned corn syrup, sugarcane molasses, etc. as raw materials was heated to 85° C., centrifuged at 8000 r / min for 10 min, and bacteria were removed to obtain the magnesium succinate fermentation serum.

[0027] 30% concentration of Na 2 CO 3 The solution was heated to 65°C, and slowly added to the above-mentioned fermentation broth with stirring, and 45-60 ml of Na was added to each liter of fermentation broth. 2 CO 3 The solution, after reacting for 40 minutes, was...

Embodiment 7

[0035] Experimental conditions: The fermentation liquid used in this experiment was fermented with corn syrup and sugarcane molasses respectively, and Na 2 CO 3 Adjust pH.

[0036] The sodium succinate fermentation liquid fermented with corn syrup and sugarcane molasses respectively as raw materials is heated to 85° C. and filtered with a 0.45 μ microfiltration membrane to obtain the sodium succinate-containing fermentation serum.

[0037] Pass the fermented liquid containing sodium succinate through a 732 column equipped with treated strong acidic hydrogen, and the column flow rate is 1.5h -1 . Then wash with water in an amount 1 to 2 times the weight of the fermentation broth, and collect the effluent. Then the effluent was decolorized at 75° C. for 30 minutes, and the dosage of activated carbon for decolorizing the fermentation broth of the two raw materials was 3-5 g / L and 10-12 g / L respectively. Concentrate and crystallize the obtained solution to obtain succinic acid...

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Abstract

A method for extracting succinic acid from fermentation broth through cation resin exchange belongs to the biochemical technical field. The method comprises the following steps that fermentation broth undergoes heated centrifugal filtration or membrane filtration so as to eliminate thalli; sodium carbonate is added in the clear solution to generate magnesium carbonate precipitation; a filter cake is reclaimed after filtration; then, the filtrate flows through a cation resin column, and the effluent is succinic acid solution; a succinic acid product is obtained after decoloring, concentration and crystallization; the cation resin column is eluted by ammonium carbonate after exchange so as to obtain sodium bicarbonate effluent; sodium salt is reclaimed and reused in fermentation broth treatment after ammonia is eliminated by heating; furthermore, resin regeneration can be realized by sulphuric acid through a conventional method, and the generated (NH4)2 SO4 can be used as a fertilizer. The method does not need to carry out acidification for the filtrate, and has the advantages of short technological line and high yield, thereby realizing element cycle economy. The invention provides a method for extracting succinic acid from microorganism fermentation broth with simple operation and economical efficiency.

Description

technical field [0001] The invention relates to a method for extracting succinic acid in fermentation broth by cation exchange, and belongs to the technical field of biochemical industry. Background technique [0002] Succinic acid is an important four-carbon compound in industry. It is widely used in food, medicine, pesticides, dyes, spices, paints, plastics and material industries as organic synthesis raw materials, intermediate products or special chemicals. At present, succinic acid is mainly obtained by hydrolysis of maleic anhydride, and the chemically synthesized succinic acid tends to increase in production cost due to the dependence on petrochemical raw materials and other reasons, which limits its wide application. The production of succinic acid by microbial fermentation uses renewable carbon sources (such as glucose, etc.) and carbon dioxide as the main raw materials. A green process with development potential. The use of microbial fermentation to prepare succi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C55/10C07C51/47C01C1/24C12P7/46
Inventor 孙志浩郑璞倪晔董晋军
Owner JIANGNAN UNIV
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