Method for processing ion exchange waste liquor of lysine production by fermentation method

A technology for lysine and lysine fermentation, which is applied in the field of fermentation and can solve the problems of difficulty in treatment and utilization of severance waste

Inactive Publication Date: 2009-04-15
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a treatment method for the separation waste liquid of lysine produced by fermentation, so as to ov

Method used

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  • Method for processing ion exchange waste liquor of lysine production by fermentation method
  • Method for processing ion exchange waste liquor of lysine production by fermentation method
  • Method for processing ion exchange waste liquor of lysine production by fermentation method

Examples

Experimental program
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Effect test

Embodiment 1

[0083] Ordinary electrodialyzer is a one-stage, single-stage ordinary electrodialyzer that operates independently, and the direction of liquid flow in adjacent compartments adopts the form of parallel flow. The area of ​​the ion exchange membrane is 210mm×62mm, using JAM-10 type anion exchange membrane and JCM-1 type cation exchange membrane. Anion exchange membrane and cation exchange membrane form a two-compartment membrane stack structure (such as Figure 5 ) Repeat for 5 pairs. A titanium-coated ruthenium electrode is used as the anode plate, and a stainless steel electrode is used as the cathode plate. Both the partition and the net are polypropylene materials, the partition is a non-loop partition, and the partition is a woven mesh type.

[0084] See figure 2 . Pass 3.0L of lysine separation waste liquid containing 60g / L ammonium sulfate and COD about 53000mg / L from China Ningxia Yipin Bioengineering Co., Ltd. into the salt chamber of an ordinary electrodialyzer; th...

Embodiment 2

[0087] Common electrodialyzer is with embodiment 1.

[0088] See image 3 . Pass 3.0L of lysine separation waste liquid containing 48g / L ammonium chloride and COD about 52000mg / L from China Ningxia Yipin Bioengineering Co., Ltd. into the salt chamber of the ordinary electrodialyzer; It is 3.0L 0.05mol / L ammonium chloride aqueous solution, and the two-electrode chamber liquid is 1L 0.25mol / L sodium sulfate solution.

[0089] Control current density 30mA / cm during operation 2 , the linear velocity of liquid flow in each compartment is 3cm / s, and the temperature of feed liquid in each compartment is 30°C. Measure the conductance value of the feed solution in the salt chamber every 10 minutes, and stop the ordinary electrodialysis operation when the conductance value drops to 5 μS / cm. Obtain about 3.09 liters of ammonium chloride aqueous solution with a concentration of about 0.9mol / L in the concentrated chamber. The waste liquid obtained in the salt chamber of the ordinary e...

Embodiment 3

[0091] Common electrodialyzer is with embodiment 1.

[0092] See Figure 4 . Pass 6.0L of lysine separation waste liquid containing 72g / L ammonium nitrate and COD about 54000mg / L of China Ningxia Yipin Bioengineering Co., Ltd. into the salt chamber of an ordinary electrodialyzer; the initial liquid of the concentrated chamber is 1.0L of 0.05mol / L ammonium nitrate aqueous solution, and both electrode chamber liquids are 1L of 0.25mol / L sodium sulfate solution.

[0093] Control current density 30mA / cm during operation 2 , the linear velocity of liquid flow in each compartment is 3cm / s, and the temperature of feed liquid in each compartment is 30°C. Measure the conductance value of the feed solution in the salt chamber every 10 minutes, and stop the ordinary electrodialysis operation when the conductance value drops to 5 μS / cm. Obtain about 1.08 liters of ammonium nitrate aqueous solution with a concentration of about 5.0mol / L in the concentrated chamber. The waste liquid ob...

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Abstract

The invention belongs to the ferment industry, in particular relates to a treatment method of ion exchange waste liquor in lysine production by a fermentation method. The invention adopts a common electrodialysis technology to recycle ammonium sulfate, ammonium chloride or ammonium nitrate in the lysine ion exchange waste liquor produced by extracting the lysine from lysine fermentation production to water solution of ammonium sulfate, ammonium chloride or ammonium nitrate, or adopts a bipolar membrane electrodialysis technology to regenerate sulfuric acid, hydrochloric acid or nitric acid and NH3 by ammonium sulfate, ammonium chloride or ammonium nitrate in the lysine ion exchange waste liquor produced by extracting the lysine from the lysine fermentation production, or adopts the combination of the common electrodialysis technology and the bipolar membrane electrodialysis technology to recycle ammonium sulfate, ammonium chloride or ammonium nitrate in the lysine ion exchange waste liquor produced by extracting the lysine from the lysine fermentation production and regenerate sulfuric acid, hydrochloric acid or nitric acid and NH3. The invention realizes the resource recycling of the ion exchange waste liquor and clean production.

Description

technical field [0001] The invention belongs to the fermentation industry, and in particular relates to a treatment method for lysine separation waste liquid in L-lysine produced by a fermentation method, so as to realize resource utilization of separation waste liquid and realize clean production. Background technique [0002] L-lysine (hereinafter referred to as lysine) is one of the eight essential amino acids for human and animal nutrition. It plays an important role in regulating the metabolic balance in the body, improving the absorption of cereal protein in the body, improving human dietary nutrition and animal nutrition, and promoting growth and development. At present, it is mainly used in medicine, food and feed industries. From the perspective of consumption structure, lysine The consumption of acid in feed accounts for nearly 90%, while the consumption of food and pharmaceutical intermediates only accounts for 10%. [0003] Lysine is an important additive in the...

Claims

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Application Information

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IPC IPC(8): C02F1/469C01C1/24C01C1/16C01C1/18
Inventor 丛威焦扬杨鹏波任洪艳王倩吴霞石绍渊张勇
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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