A kind of adsorption type bone apatite and its preparation method and application

A bone apatite, adsorption-type technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, phosphorus compounds, etc., can solve the problem of insufficient adsorption capacity of bone apatite, achieve low cost, improve adsorption rate, The effect of the preparation process is simple and easy to operate

Active Publication Date: 2021-04-20
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an adsorption type bone apatite and its preparation method and application, to solve the problem that the adsorption capacity of bone apatite in the prior art is not high enough, compared with unmodified bone apatite for heavy metal ions The adsorption capacity has been greatly improved

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  • A kind of adsorption type bone apatite and its preparation method and application
  • A kind of adsorption type bone apatite and its preparation method and application
  • A kind of adsorption type bone apatite and its preparation method and application

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Embodiment 1

[0048] The process of the preparation method of the adsorption type bone apatite in this embodiment is as follows:

[0049] Cut the animal bone into block animal bones with a size of 1cm×1cm×1cm, soak the block animal bones in 30vol.% hydrogen peroxide for 24h, then boil in boiling water at a temperature of 100°C for 2h, repeat the boiling operation 3 times, each time Change the water again.

[0050] Then put the massive animal bone into a TC-12X2 muffle furnace for high-temperature calcination. The calcination temperature is 550°C, the heating rate is 5°C / min, the holding time is 5h, and the bone apatite is obtained by air cooling.

[0051] Bone apatite was modified by stationary phosphoric acid etching, and the surface of bone apatite (BHAP) was chemically modified. Eight blocks of bone apatite with a mass of 0.9 g were soaked in phosphoric acid solution. The phosphoric acid concentration in the phosphoric acid solution is 10vol.%, the acid etching time is 10min, and the ad...

Embodiment 2

[0055] The process of the preparation method of the adsorption type bone apatite in this embodiment is as follows:

[0056] Cut the animal bone into block animal bones with a size of 1cm×1cm×1cm, soak the block animal bones in 30vol.% hydrogen peroxide for 24h, then boil in boiling water at a temperature of 100°C for 2h, repeat the boiling operation 3 times, each time Change the water again.

[0057] Then put the massive animal bone into a TC-12X2 muffle furnace for high-temperature calcination. The calcination temperature is 600°C, the heating rate is 5°C / min, the holding time is 4h, and the bone apatite is obtained by air cooling.

[0058] Bone apatite was modified by stationary phosphoric acid etching, and the surface of bone apatite (BHAP) was chemically modified. Eight blocks of bone apatite with a mass of 0.9 g were soaked in phosphoric acid solution. The concentration of phosphoric acid in the phosphoric acid solution was 10vol.%, and the acid etching time was 40 minut...

Embodiment 3

[0062] The process of the preparation method of the adsorption type bone apatite in this embodiment is as follows:

[0063] Cut the animal bone into block animal bones with a size of 1cm×1cm×1cm, soak the block animal bones in 30vol.% hydrogen peroxide for 24h, then boil in boiling water at a temperature of 100°C for 2h, repeat the boiling operation 3 times, each time Change the water again.

[0064] Next, put the massive animal bone into a TC-12X2 muffle furnace for high-temperature calcination at a temperature of 600°C, a heating rate of 5°C / min, and a holding time of 4 hours to obtain bone apatite.

[0065] Bone apatite was modified by stationary phosphoric acid etching, and the surface of bone apatite (BHAP) was chemically modified. Eight blocks of bone apatite with a mass of 0.9 g were soaked in phosphoric acid solution. The concentration of phosphoric acid in the phosphoric acid solution was 10vol.%, and the acid etching time was 30 minutes to obtain adsorbed bone apati...

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Abstract

The invention belongs to the field of environmental protection materials, and specifically relates to an adsorption-type bone apatite and its preparation method and application. During the preparation, the organic matter in the animal bone is removed; the animal bone from which the organic matter has been removed is calcined to obtain the bone apatite; The phosphoric acid solution is used to chemically modify the surface of the bone apatite to obtain the adsorbed bone apatite. The adsorption-type bone apatite of the present invention can be used to adsorb heavy metal ions in industrial sewage, compared with the specific surface area before modification from 47.832 (m 2 / g) increased to 131.566(m 2 / g); in Pb 2+ When the initial concentration is 200mg / L, the removal rate can reach 98.3%. For the initial concentration of 200mg / LZn 2+ 、Cu 2+ Ions, the removal rate can reach more than 70%, and it has good ability to remove heavy metal ions. The invention solves the technical problem of insufficient bone apatite adsorption capacity in the prior art.

Description

technical field [0001] The invention belongs to the field of environment-friendly materials, and in particular relates to an adsorption type bone apatite and its preparation method and application. Background technique [0002] Heavy metal ions (mainly including copper, lead, cadmium, chromium, mercury, arsenic, nickel, zinc, etc.) are easy to accumulate in the internal organs after ingestion, and will cause chronic poisoning and even cancer after reaching a certain level. The major Japanese pollution incidents that once shook the world, "Minamata Disease" and "Bone Pain Disease", were caused by mercury and cadmium poisoning respectively. The sources of heavy metal ion emissions are extremely extensive. At present, many factories, such as metal plating, paint production, papermaking, pesticide production, petroleum refining, battery production, and mining industries, discharge a large amount of wastewater containing heavy metal ions every day. According to statistics, the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/04B01J20/30C01B25/32C02F1/28C02F101/20
CPCB01J20/048B01J2220/4806B01J2220/4875C01B25/32C02F1/281C02F2101/20
Inventor 郭大刚杨永超张文丽郑艳李丹李睿
Owner XI AN JIAOTONG UNIV
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