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Carbon material for adsorbing heavy metal ions in water and application of carbon material

A technology of heavy metal ions and carbon materials, which is applied in the fields of adsorption water/sewage treatment, other chemical processes, water/sewage treatment, etc. Good feasibility, simple process effect

Inactive Publication Date: 2015-12-30
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, the use of adsorbents to adsorb heavy metal ions is an effective method for treating wastewater containing heavy metal ions, but it is generally reported that the method for preparing adsorbents is cumbersome, the conditions are harsh, and the organic solvents used are not conducive to environmental protection. Therefore, a Adsorbents with low price, simple preparation process, mild reaction conditions, excellent adsorption performance, no secondary pollution, recyclability, wide application range and broad industrial application prospects have become the hotspots of current research.

Method used

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  • Carbon material for adsorbing heavy metal ions in water and application of carbon material
  • Carbon material for adsorbing heavy metal ions in water and application of carbon material
  • Carbon material for adsorbing heavy metal ions in water and application of carbon material

Examples

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Effect test

Embodiment 1

[0036] (1) Preparation of porous carbon material: Dissolve 4.5g carboxymethylcellulose in 100mL water, heat and dissolve at 70°C for 0.5h, add PVP (Mw=58000) to the prepared carboxymethylcellulose solution, PVP It is 10% of the mass of carboxymethyl cellulose, stirred at room temperature for 12 hours, then transferred to an autoclave for hydrothermal reaction at 180°C for 24 hours, and finally, washed alternately with distilled water and absolute ethanol for 3-5 times, at 80°C Dry in an oven for 12 hours to obtain a brown-black porous carbon material. Depend on figure 1 It can be seen that the prepared porous carbon material has a spherical structure, the particle size of the large porous sphere is about 4 μm, and the particle size of the small porous sphere is about 1 μm.

[0037] (2) Adsorption experiment of heavy metal ions: Dissolve the soluble salts of heavy metal ions in distilled water respectively to prepare a heavy metal ion solution of a certain concentration, take ...

Embodiment 2

[0041] (1) Preparation of porous carbon material: Dissolve 4.5g carboxymethylcellulose in 100mL water, heat and dissolve at 70°C for 12h, add PVP (Mw=58000) to the prepared carboxymethylcellulose solution, PVP is 10% of the mass of carboxymethyl cellulose, stirred at room temperature for 12 hours, then transferred to an autoclave for hydrothermal reaction at 180°C for 20 hours, finally, washed alternately with distilled water and absolute ethanol for 3-5 times, and dried in an oven at 80°C Drying in medium temperature for 12h yields a brown-black porous carbon material.

[0042] (2) Adsorption experiment of heavy metal ions: Dissolve the soluble salts of heavy metal ions in distilled water respectively to prepare a heavy metal ion solution of a certain concentration, take 50 mL of the heavy metal ion solution and put it into an 80 mL beaker, and weigh 50 mg of porous carbon The material was added to the above heavy metal ion solution for adsorption at 30° C., and stirred slowl...

Embodiment 3

[0046] (1) Preparation of porous carbon material: Dissolve 4.5g of potatoes in 100mL of water, heat and dissolve at 70°C for 24h, add PVP (Mw=58000) to the prepared starch solution, PVP is 10% of the starch mass, and Stir at low temperature for 12 hours, then transfer to an autoclave for hydrothermal reaction at 180°C for 16 hours, finally, alternately wash with distilled water and absolute ethanol for 3-5 times, and dry in an oven at 80°C for 12 hours to obtain a brown-black porous carbon material . Depend on figure 2 It can be seen that the prepared porous carbon material has an irregular block structure, and it can be seen from SEM that these block structures are full of macropores and mesopores.

[0047] (2) Adsorption experiment of heavy metal ions: Dissolve the soluble salts of heavy metal ions in distilled water respectively to prepare a heavy metal ion solution of a certain concentration, take 50 mL of the heavy metal ion solution and put it into an 80 mL beaker, and...

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Abstract

The invention provides a carbon material for adsorbing heavy metal ions in water and application of the carbon material. The carbon material is prepared from a method which comprises the following steps: (1) preparing a polysaccharide solution : dissolving polysaccharide in water and stirring for 0.5-24 h at the temperature of 70-100 DEG C; (2) adding PVP into the polysaccharide solution prepared in the step (1), stirring for 4-12 h at the room temperature, then transferring the mixture into a autoclave, enabling hydrothermal reaction for 8-24 h at the temperature of 160-200 DEG C, washing, and then drying for 12 h in a drying oven at the temperature of 80 DEG C to obtain the porous carbon material. The prepared porous carbon material is controllable in structure: the structure and the appearance can be controlled through adjusting the content of PVP, the concentration of the polysaccharide solution and the like, and the operation is simple. The prepared porous carbon material has a favorable adsorption effect on heavy metal ions in wastewater, has different adsorption capacities to different heavy metal ions, and shows favorable adsorption selectivity, and the lead ion adsorption capacity reaches 89.22 mg / g.

Description

technical field [0001] The invention belongs to the technical field of carbon materials, and in particular relates to a preparation method for regulating carbon materials by using polysaccharide as a carbon source and polyvinylpyrrolidone as an additive. Background technique [0002] The ocean is the cradle of life and an important place to maintain the balance of the global ecosystem. In recent years, with the rapid development of urbanization and the growth of population, marine pollution has become increasingly serious. Severe pollution has greatly damaged the marine environment in coastal waters, destroyed the ecological balance, and affected the health of coastal residents. In 2002, the seriously polluted area of ​​my country's coastal waters reached 26,000 km 2 , the area of ​​the sea area that does not meet the standard of clean sea water is 174,000 km2, of which, the area of ​​the Bohai Sea's non-clean sea area has reached 41.3% of the total area, and the main pollu...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/62
Inventor 李银辉李坤宇陈建新韩健苏敏卢爱党李雷李莹
Owner HEBEI UNIV OF TECH