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Method for recycling abricycline from abricycline crystal mother liquor

A technology of crystallizing mother liquor and tetracycline, applied in the field of biomedicine, can solve the problems of environmental pollution, difficult handling of mother liquor, loss of a large amount of substances and the like

Inactive Publication Date: 2009-04-15
NINGXIA QIYUAN PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] A large amount of mother liquor produced in tetracycline crystallization production is generally all directly discharged as waste liquid or discharged after biochemical treatment. Because tetracycline of about 1000u / ml remains in the tetracycline mother liquor, therefore, on the one hand, a large amount of substances contained in the mother liquor are lost, causing Waste, on the other hand, due to the antibacterial properties of the remaining tetracycline, it is difficult to handle the mother liquor biochemical method, and the environmental pollution is serious

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  • Method for recycling abricycline from abricycline crystal mother liquor

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Embodiment Construction

[0008] The mother liquor of tetracycline with a pH of 4.8~5.0 is acidified with hydrochloric acid to pH 2.0±0.2, and then multi-stage concentration is carried out with a roll-type organic membrane with a molecular weight of 400, and the tetracycline titer is 8000~10000u / ml. After crystallization, tetracycline is recovered, and the crystallization method is the same as that of tetracycline, and the dialysate is decontaminated and discharged for biochemical treatment.

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Abstract

The invention relates to a method for recycling tetracycline from tetracycline crystallization mother liquor, which has acidification by hydrochloric acid first on the tetracycline crystallization mother liquor until pH value is 2.0 plus or minus 0.2; then multi-level enrichment is carried out with organic film roll of molecular weight of 400 until the potency of tetracycline is 8000-10000u / ml; then the concentrated solution is crystallized. The quality of tetracycline recycled by the invention can meet the quality standard of tetracycline, and the yield coefficient of tetracycline can be improved by 2-3 percent; simultaneously, tetracycline waste water can be more easily to be treated by using a biochemical method.

Description

Technical field [0001] The invention belongs to the technical field of biomedicine, and particularly relates to a method for recovering tetracycline from tetracycline crystallization mother liquor. Background technique [0002] A large amount of mother liquor produced in the production of tetracycline crystallization is generally discharged directly as waste liquid or discharged after biochemical treatment. Because there is about 1000u / ml tetracycline remaining in the tetracycline mother liquor, on the one hand, a large amount of substances contained in the mother liquor are lost, causing Waste, on the other hand, because the remaining tetracycline has antibacterial properties, the mother liquor biochemical method is difficult to deal with, and the environmental pollution is serious. Summary of the invention [0003] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and provide a method for recovering tetracycline from the mother li...

Claims

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Application Information

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IPC IPC(8): C07C237/26C07C231/24
Inventor 孙瑞君李泉山
Owner NINGXIA QIYUAN PHARMA