Production technology of purified glutamic acid

A production process, glutamic acid technology, applied in the field of refined glutamic acid production process, can solve the problems of poor internal mass transfer of microbial carriers, unreasonable microbial compatibility, and many feeding times, so as to reduce the amount of sludge produced, The effect of low operating cost and increased microbial concentration

Active Publication Date: 2015-11-18
HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the hot research is on the treatment of fermentation wastewater by biotechnology, which has the advantages of low cost and no secondary pollution, but there are unreasonable microbial compatibility, low treatment efficiency, and microbial carriers have poor internal mass transfer and are not easy to transmit light. , small specific surface area, short service life and other defects; biological agents need to be put in many times, which increases the cost, and the large amount of dosing produces a large amount of sludge, which is not easy to handle

Method used

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  • Production technology of purified glutamic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A production process for refined glutamic acid, comprising the steps of:

[0032] Use a high-speed disk separator to separate the glutamic acid feed liquid and cell protein in the fermentation broth, and remove the fermentation cells. The speed of the high-speed disk separator to separate the cell protein is 4000r / min;

[0033] The glutamic acid feed liquid is pumped into the decolorization tank for decolorization treatment, and powdered activated carbon accounting for 2% of the glutamic acid feed liquid mass is added to the decolorization tank. The temperature in the decolorization tank is controlled at 45°C, and concentrated after 30 minutes of decolorization. It is: temperature 70°C, vacuum degree -0.1kpa, primary crystallization to obtain glutamic acid crude crystals and primary mother liquor; crude crystals for decolorization, separation and iron removal, secondary crystallization to obtain glutamic acid crystals and secondary mother liquor, and Glutamic acid cryst...

Embodiment 2

[0044] A production process for refined glutamic acid, comprising the steps of:

[0045] Use a high-speed disk separator to separate the glutamic acid feed liquid and cell protein in the fermentation broth, and remove the fermentation cells. The speed of the high-speed disk separator to separate the cell protein is 5000r / min;

[0046]The glutamic acid feed liquid is pumped into the decolorization tank for decolorization treatment. Powdered activated carbon accounting for 2% of the glutamic acid feed liquid mass is added to the decolorization tank. The temperature in the decolorization tank is controlled at 50°C. After decolorization for 30 minutes, it is concentrated. The concentration parameters It is: temperature 70°C, vacuum degree -0.1kpa, primary crystallization to obtain glutamic acid crude crystals and primary mother liquor; crude crystals for decolorization, separation and iron removal, secondary crystallization to obtain glutamic acid crystals and secondary mother liqu...

Embodiment 3

[0057] The effect test of biological preparation of the present invention:

[0058] The experiment was carried out with glutamic acid fermented yeast liquid as the treatment sample.

[0059] Control group 1: use sawdust carrier; the type of microorganisms is the same as that of the test group; treatment method: after three days of continuous dosing, 5g / m3 per day, and then stand for six days, the detection and treatment results are shown in Table 1.

[0060] Control group 2: The carrier is the same as in Example 2, the difference is that only four kinds of bacteria are added, but Scenedesmus obliques is not added; treatment method: add 5g / cubic meter on the first day, and then leave it for six days to detect See Table 1 for the processing results.

[0061] Test group: the process of Example 2 of the present invention, the results of detection and treatment are shown in Table 1.

[0062] Table 1

[0063]

[0064] Conclusion: The carrier prepared by the present invention...

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Abstract

The invention belongs to the technical field of fermentation production of amino acids, and discloses a production technology of purified glutamic acid. The technology comprises the following steps: 1, separating mycoproteins; 2, preparing crystals; and 3, carrying out biological oxidation. Finished glutamic acid prepared in the invention has the advantages of high purity, good color feeling, and uniform crystal grain; and a fermentation mother liquor processing method has the advantages of simplicity, feasibility, low cost and good treatment effect.

Description

technical field [0001] The invention relates to a production process of refined glutamic acid, which belongs to the technical field of amino acid production by fermentation. Background technique [0002] Glutamic acid is the precursor of monosodium glutamate, which is mainly used in the production of monosodium glutamate. The most widely used method for the production of glutamic acid at home and abroad is the fermentation method. There are many techniques for extracting glutamic acid from the fermentation broth. The main methods are: : Glutamic acid extracted by isoelectric method, glutamic acid extracted by ion exchange method, glutamic acid extracted by zinc salt method, glutamic acid extracted by hydrochloride method or glutamic acid extracted by electrodialysis method, etc. [0003] In recent years, the prices of chemical raw materials such as sulfuric acid and liquid ammonia have continued to rise, and at the same time, society has continuously increased the requiremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C229/24C07C227/40C02F3/34
Inventor 白红兵赵凤良孙钦波程士清韩继军杨雪
Owner HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
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