Peanut shell/hydroxyapatite composite material, preparation method thereof and application of peanut shell/hydroxyapatite composite material in adsorption separation of Pb (II)

A technology of hydroxyapatite and composite materials, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal compounds, etc., can solve problems such as high cost, poor stability of adsorbent, complex synthesis process, etc., and achieve low cost , surface modification is convenient, and the experimental device is simple

Pending Publication Date: 2022-04-01
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a method for preparing a peanut shell / hydroxyapatite composite adsorbent. The method of the present invention solves the problems of poor stability, high cost and complex synthesis process of traditional adsorbents. It can achieve high-efficiency adsorption and separation of Pb(II), and has high practical value

Method used

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  • Peanut shell/hydroxyapatite composite material, preparation method thereof and application of peanut shell/hydroxyapatite composite material in adsorption separation of Pb (II)
  • Peanut shell/hydroxyapatite composite material, preparation method thereof and application of peanut shell/hydroxyapatite composite material in adsorption separation of Pb (II)
  • Peanut shell/hydroxyapatite composite material, preparation method thereof and application of peanut shell/hydroxyapatite composite material in adsorption separation of Pb (II)

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Effect test

Embodiment 1

[0029] The synthesis (2.0%HAP-PA) of embodiment 1 peanut shell / hydroxyapatite composite material

[0030] 1) Peanut shells are pulverized by a grinder to prepare a powder sample, sieved, and the peanut shell powder between 50 and 100 meshes is sieved, and sealed for later use. Mix peanut shell powder and distilled water at a solid-to-liquid ratio of 1g: 20mL and stir. During this period, change the water several times to clean and remove surface dust and impurities until the solution is nearly colorless. Vacuum filtration and drying at 60°C overnight to obtain pretreated peanut shell powder (PA).

[0031] 2) Dissolve 3.4549g of ammonium dihydrogen phosphate in deionized water, adjust the pH to 10 with ammonia water, add 11.8141g of calcium nitrate tetrahydrate, and stir the resulting mixture at 40°C for 96h; filter with suction, collect the product, and dry at 60°C , to obtain hydroxyapatite (HAP).

[0032] 3) Take 0.2g of HAP and dissolve it in deionized water. After fully ...

Embodiment 2

[0034] Synthesis (0.2%HAP-PA) of embodiment 2 peanut shell / hydroxyapatite composite material

[0035] According to the method described in Example 1, only in step 3), the quality of hydroxyapatite HAP is 0.04g, and the quality of the pretreated peanut shell powder PA is 20g, and the peanut shell with hydroxyapatite loading of 0.2% is obtained. / Hydroxyapatite composite material, named 0.2% HAP-PA.

Embodiment 3

[0036] Synthesis (0.5%HAP-PA) of embodiment 3 peanut shell / hydroxyapatite composite material

[0037] According to the method described in Example 1, only in step 3), the quality of hydroxyapatite HAP is 0.05g, and the quality of the pretreated peanut shell powder PA is 10g, and the peanut shell with hydroxyapatite loading of 0.5% is obtained. / Hydroxyapatite composite material, named 0.5% HAP-PA.

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Abstract

The invention relates to a peanut shell / hydroxyapatite composite material, a preparation method thereof and application of the peanut shell / hydroxyapatite composite material in adsorption and separation of Pb (II). The preparation method comprises the following steps: dissolving ammonium dihydrogen phosphate in deionized water, adjusting the pH value to 10, adding a calcium source, and stirring the obtained mixture at 40 DEG C for reaction; carrying out suction filtration, collecting a product, and drying to obtain hydroxyapatite HAP; dissolving hydroxyapatite HAP in deionized water, stirring and dissolving, adding the pretreated peanut shell powder PA, uniformly stirring, carrying out suction filtration, and drying; and grinding the obtained product, transferring the ground product into a muffle furnace, and carrying out high-temperature calcination to obtain the peanut shell / hydroxyapatite composite material HAP-PA. The peanut shell / hydroxyapatite composite material prepared by the invention can effectively adsorb lead ions, the preparation raw materials are biomass materials which are cheap and easy to obtain, meanwhile, the preparation process is simple, the operability is high, large-scale preparation can be realized, and the peanut shell / hydroxyapatite composite material has practical practicability.

Description

technical field [0001] The invention belongs to the technical field of effective adsorption and separation of lead and preparation of hydroxyapatite composite material, and specifically relates to the preparation of a peanut shell / hydroxyapatite composite material and its application in efficient adsorption and separation of Pb(II). Background technique [0002] Lead is one of the heavy metals with high utilization value. It has the advantages of high corrosion resistance, difficult penetration of X-rays and γ-rays, and good plasticity. It is often processed into plates and pipes, and is widely used in chemical industry, cables, Industrial sectors such as batteries and radiation protection. Lead has a wide range of uses, such as: used in the manufacture of lead batteries; used for casting lead; used for soldering; manufacturing radioactive radiation, X-ray protective equipment; used as building materials; used in lead sulfate batteries; used as bullets and shells; soldering ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F101/20
Inventor 公丽雯王月娇刘瑶冯小庚熊英
Owner LIAONING UNIVERSITY
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