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Adsorption type bone apatite and preparation method and application thereof

A bone apatite, adsorption-type technology, applied in chemical instruments and methods, adsorption water/sewage treatment, phosphorus compounds, etc., can solve the problem of insufficient adsorption capacity of bone apatite, achieve good adsorption effect, absorb energy Good, high specific surface area effect

Active Publication Date: 2020-02-28
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Adsorption type bone apatite and preparation method and application thereof
  • Adsorption type bone apatite and preparation method and application thereof
  • Adsorption type bone apatite and preparation method and application thereof

Examples

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Effect test

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 environment-friendly materials, and particularly relates to adsorption type bone apatite and a preparation method and application thereof. The preparation methodcomprises the following steps: removing organic matters in animal bones; calcining the animal bones without the organic matters to obtain bone apatite; and carrying out surface chemical modification on the bone apatite by adopting a phosphoric acid solution to obtain the adsorption type bone apatite. The adsorption type bone apatite can be used for adsorbing heavy metal ions in industrial sewage,and the specific surface area of the adsorption type bone apatite is increased from 47.832 (m<2> / g) to 131.566 (m<2> / g) compared with the specific surface area of the adsorption type bone apatite before modification; when the initial concentration of Pb<2> is 200 mg / L, a removal rate can reach 98.3%; for Zn<2> and Cu<2> ions with an initial concentration of 200 mg / L, the removal rate of the ions can reach 70% or above; so the adsorption type bone apatite has good heavy metal ion removal capacity. The technical problem that bone apatite in the prior art is not high enough in adsorption capacityis solved.

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 Applications(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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