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Process for producing basic copper chloride by using berberine copper-containing wastewater

A technology of berberine and copper chloride, applied in the direction of copper chloride, copper halide, etc., to achieve the effect of simple process route, low content of harmful impurities and low price

Inactive Publication Date: 2013-07-24
CHINESE RES ACAD OF ENVIRONMENTAL SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] These production methods have certain advantages in terms of process operation, cost, and environmental friendliness, but there is still much room for improvement.

Method used

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  • Process for producing basic copper chloride by using berberine copper-containing wastewater

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Embodiment 1

[0033] A kind of preparation method of basic cupric chloride of the present invention, comprises the following steps: get 200ml berberine waste water to pass through 0.45 μ m filter membrane filter, filtrate is added reactor, open agitator, add 400g / L berberine gradually in reactor Sodium hydroxide solution is reacted, and the reaction temperature is normal temperature. As the reaction progresses, the pH value of the reaction solution rises, and basic copper chloride precipitates in the solution. When the pH value of the reaction solution rises to 7.20, stop adding the sodium hydroxide solution and control the reaction time for 0.5h. Centrifuge the materials discharged from the reaction system, and the centrifugal speed of the centrifuge is 3000r / min. Then the obtained solid is washed and centrifuged, and the obtained solid is dried in an oven at 180°C until the water content of the reaction product is below 0.2%, and passed through a 40-mesh sieve after drying to obtain the p...

Embodiment 2

[0036]A preparation method of basic copper chloride of the present invention comprises the following steps: taking 200ml of berberine waste water and filtering it through a 0.45 μm filter membrane, adding the filtrate to the reactor, opening the stirring device, and gradually adding 300g / L of berberine to the reactor sodium hydroxide solution, the reaction temperature is normal temperature. As the reaction progresses, the pH of the reaction solution rises, and basic copper chloride precipitates in the solution. When the pH of the reaction solution rises to 7.46, stop adding the sodium hydroxide solution and control the reaction time for 1 hour. Centrifuge the materials discharged from the reaction system, and the centrifugal speed of the centrifuge is 4000r / min. Then the obtained solid is washed and centrifuged, and the obtained solid is dried in an oven at 80°C until the water content of the reaction product is below 0.2%, and passed through a 40-mesh sieve after drying to ob...

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Abstract

The invention relates to a process for producing basic copper chloride by using berberine copper-containing wastewater. The method comprises the steps that: berberine copper-containing wastewater is filtered by using a microporous membrane; 90-110g / L of a sodium hydroxide concentrated solution is added into the berberine copper-containing wastewater; a reaction is carried out under a temperature of 60-80 DEG C, a pH of 5-7, and a normal pressure, such that basic copper chloride precipitate is produced; after the reaction, the produced precipitate is first subjected to centrifugal separation; obtained solid is washed and subjected to washing and centrifugal separation; and the reaction product basic copper chloride is obtained after drying; centrifuged supernatant is subjected to two-level absorption, and is treated in a biochemical treatment device. According to the invention, basic copper chloride is prepared from berberine pharmaceutical wastewater containing high concentration of heavy metal copper, such that the treatment difficulty of the medicine pharmaceutical wastewater which is hard to degrade is reduced. The process provided by the invention is characterized in that: a copper ion removal rate in the berberine copper-containing wastewater is higher than 99.9%, such that high-concentration hard-to-degrade pharmaceutical wastewater is turned into organic wastewater which can be biodegraded. After biochemical treatment, the wastewater reaches a discharge standard. The process has the advantages of good treatment effect, convenient operation, and good application prospect.

Description

technical field [0001] The invention relates to a process for preparing basic copper chloride by treating pharmaceutical wastewater containing strong acidity and heavy metal copper. technical background [0002] Berberine, also known as berberine hydrochloride, is a yellow needle-like crystal. The melting point is 145°C. Soluble in hot water, ethanol, insoluble in ether, benzene. It can form complexes with chloroform and acetone. Its aqueous solution has yellow-green fluorescence. Berberine is a natural isoquinoline alkaloid, mainly found in Coptis chinensis, Phellodendron phellodendron, Three needles and other Ranunculaceae plants. Coptis chinensis is an important traditional Chinese medicine with a long history of application. It is mainly used for clearing away heat and dampness, purging fire and detoxifying, and its main active ingredient is berberine. In recent years, with the deepening of research, more and more functions of berberine have been developed and utili...

Claims

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Application Information

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IPC IPC(8): C01G3/05
Inventor 曾萍宋永会单永平张锋新崔晓宇肖书虎谢晓琳
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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