Method for recycling gentamicin from waste active carbon generated by discoloring gentamycin sulfate

A technology of gentamicin sulfate and gentamicin, which is applied in the field of medicine and chemical industry, can solve the problem of small recovery effect, achieve great economic and social benefits, and increase the output.

Inactive Publication Date: 2010-02-17
南阳普康药业有限公司 +1
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Problems solved by technology

[0002] At present, in the process of refining and decolorizing the production of gentamicin, the used waste activated carbon is partially washed, and the washing liquid is concentrated separately and then combined into batches. little effect

Method used

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Embodiment Construction

[0016] The method for reclaiming gentamicin from waste activated carbon after decolorization of gentamicin sulfate described in the present invention, the method is that the waste activated carbon after decolorization of gentamycin concentrated solution is used, adjust pH with hot water after sulfuric acid Soak and wash, adjust the pH of the washing solution with lye, then perform 732 cationic resin exchange, and then wash with dilute hydrochloric acid, dilute ammonia, elution with concentrated ammonia, concentration, salt decolorization, spraying and other process steps to recover gentamicin .

[0017] For this reason, the method for reclaiming gentamicin from the waste activated carbon after gentamicin sulfate decolorization described in the present invention specifically comprises the following steps:

[0018] ①. Mix decolorized waste activated carbon with acidic water adjusted to pH 2.0-3.5 with sulfuric acid at a volume ratio of 1:40-50, soak and stir for 30-60 minutes, a...

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Abstract

The invention discloses a method for recycling gentamicin from waste active carbon generated by discoloring gentamycin sulfate, comprising the following steps: regulating pH of the waste active carbongenerated by discoloring gentamycin concentration liquid, soaking and washing the waste active carbon with hot water, regulating pH of a washing liquid by using an alkali liquid, carrying out 732 positive ion resin exchange; and carrying out technique steps of dilute hydrochloric acid and dilute ammonia washing, concentrated ammonia elution, salt transfer discoloring, spraying, and the like to recycle the gentamicin. By adopting the recycling method, lost gentamycin can be recycled from the waste active carbon generated by discoloring gentamycin sulfate, thereby improving the yield of the gentamycin and having great economic effect and social effect.

Description

Technical field [0001] The invention belongs to the technical field of medicine and chemical industry, and in particular relates to a method for recovering gentamicin from waste activated carbon after decolorization of gentamicin sulfate. Background technique [0002] At present, in the process of refining and decolorizing the production of gentamicin, the used waste activated carbon is partially washed, and the washing liquid is concentrated separately and then combined into batches. The effect is small. Even if each batch of decolorized liquid is recovered through charcoal mash, and the total recovery rate of concentrated charcoal washing low unit and positive batch charcoal deliquification reaches 94-95.5%, there is still 4.5-6.0% loss of gentamicin. Contents of the invention [0003] For above-mentioned situation, in order to overcome the defective of prior art, the object of the present invention provides a kind of recovery method exactly, to reclaim the gentamicin o...

Claims

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Application Information

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IPC IPC(8): C07H15/236C07H1/06
Inventor 李静仁李彦博赵晴段永平吴彦薛刚
Owner 南阳普康药业有限公司
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