Nano-hydroxyapatite/sodium alginate composite material, preparation method and application of nano-hydroxyapatite/sodium alginate composite material

A nano-hydroxyapatite, hydroxyapatite technology, applied in chemical instruments and methods, alkali metal compounds, other chemical processes, etc., can solve the problems of high cost, unsuitable removal of heavy metal ions, secondary pollution, etc. Inexpensive, optimized heavy metal removal, good biocompatibility
CN104117341AActive Publication Date: 2014-10-29武汉华威生物材料工程有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
武汉华威生物材料工程有限公司
Publication Date
2014-10-29

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Abstract

The invention relates to a preparation method of nano-hydroxyapatite / sodium alginate composite material. The obtained material can be used for sewage treatment and used for adsorbing and removing heavy metal ions. The method comprises the following steps: quickly pouring a diammonium hydrogen phosphate aqueous solution in the aqueous solution of calcium nitrate, uniformly stirring and mixing, centrifuging to obtain a precipitate, washing the precipitate by using deionized water, re-dispersing the washed precipitate to the deionized water; adding a stabilizer in the obtained suspension, ultrasonically dispersing to obtain stable hydroxyapatite suspension; controlling the mass ratio of hydroxyapatite to sodium alginate, adding sodium alginate in the hydroxyapatite suspension; continuously heating and stirring, controlling the reaction time, evaporating water, carrying out freeze-drying to obtain the product. The preparation method has the advantages that the preparation process is simple and controllable, the raw material resource is wide, the cost is low, environment is protected, the pollution does not exist, the uniform compounding of the hydroxyapatite nano-particles and sodium alginate is realized, and the uniform dispersion and the non-reunion of the hydroxyapatite nano-particles are guaranteed.
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Description

technical field

[0001] The invention relates to a preparation method of a nano-hydroxyapatite / sodium alginate composite material, and the obtained material can be used for sewage treatment to adsorb and remove heavy metal ions. Background technique

[0002] With social development, population increase, and industrialization, people's demand for water is increasing, but it has caused increasingly serious water pollution problems. Among them, the water pollution caused by industry is the most serious, mainly because industrial wastewater contains many kinds of harmful heavy metal ions (As, Cd, Cr, Cu, Hg, Ni, Pb, Se, V, Zn, etc.). If it is not thorough, it will bring serious ecological problems, such as "Minamata disease" and "bone pain disease". Therefore, the removal of heavy metal ions in sewage is an important research topic in sewage treatment.

[0003] For the treatment of heavy metal ions, the traditional treatment methods mainly include ion exchange method, electroch...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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