A kind of hydrophilic functional carbon sphere and its application in removing heavy metal ions in wastewater

A heavy metal ion, hydrophilic technology, used in alkali metal compounds, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problems of unfavorable environmental protection, harsh conditions, and complicated steps of organic solvents, and achieve rich content in nature. , the effect of mild reaction conditions and simple process

Active Publication Date: 2015-08-05
HEBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

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  • A kind of hydrophilic functional carbon sphere and its application in removing heavy metal ions in wastewater

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Embodiment 1

[0029] a. Preparation of starch solution: Dissolve potato starch in water, heat and dissolve at 100° C. for 0.5 h, and prepare a 10 g / L transparent solution.

[0030] b. Preparation of hydrophilic functional carbon spheres: Take 120mL of the prepared solution and put it into a 200mL autoclave for 4 hours of hydrothermal reaction at 200°C. After the reaction is completed, cool naturally to room temperature to obtain hydrophilic functional carbon brown solution of balls;

[0031] c. Take the brown solution containing hydrophilic functional carbon spheres and freeze-dry to obtain monodisperse hydrophilic functional carbon sphere powder.

[0032] d. Preparation of copper ion solution: the cupric chloride taken by weighing is mixed with the solution that concentration is 0.05M for subsequent use;

[0033] f. The method for removing copper ions in wastewater by hydrophilic functional carbon spheres: take 50mL of the hydrophilic functional carbon sphere solution obtained in step b i...

Embodiment 2

[0035] a. Preparation of starch solution: Dissolve wheat starch in water, heat and dissolve at 90° C. for 24 hours, and prepare a transparent solution of 0.1 g / L.

[0036] b. Preparation of hydrophilic functional carbon spheres: Take 150mL of the prepared solution and put it into a 200mL autoclave for 24 hours of hydrothermal reaction at 120°C. After the reaction is completed, cool naturally to room temperature to obtain hydrophilic functional carbon brown solution of balls;

[0037] c. Take the brown solution containing hydrophilic functional carbon spheres and freeze-dry to obtain monodisperse hydrophilic functional carbon sphere powders.

[0038] d. The preparation of zinc ion solution: take a certain amount of zinc chloride and be mixed with the solution that concentration is 0.001M for subsequent use;

[0039] f. The method for removing zinc ions in wastewater by hydrophilic functional carbon spheres: take 100mL of the hydrophilic functional carbon sphere solution obtain...

Embodiment 3

[0041] a. Preparation of starch solution: Dissolve cornstarch in water, heat and dissolve at 100° C. for 6 hours, and prepare a transparent solution of 15 g / L.

[0042] b. Preparation of hydrophilic functional carbon spheres: Take 120mL of the prepared solution and put it into a 200mL autoclave for 12 hours of hydrothermal reaction at 180°C. After the reaction is completed, cool naturally to room temperature to obtain hydrophilic functional carbon brown solution of balls;

[0043] c. Freeze-drying the brown solution containing the hydrophilic functional carbon spheres to obtain a monodisperse hydrophilic functional carbon sphere powder.

[0044] d. Preparation of cadmium heavy metal ion solution: take a certain amount of cadmium chloride and prepare a solution with a concentration of 0.05M for subsequent use;

[0045] f. The method for removing cadmium ions in wastewater by hydrophilic functional carbon spheres: take 50mL of the hydrophilic functional carbon sphere solution o...

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Abstract

The invention provides a hydrophilic functional carbon sphere and a preparation method thereof. The hydrophilic functional carbon sphere uses starch as a raw material, the hydrophilic functional carbon sphere with uniform size is prepared through hydrothermal reaction, then the hydrophilic functional carbon sphere is used to remove heavy metal ions in the waste water in the form of a solution, and the invention further provides the application of the hydrophilic functional carbon sphere for removing the heavy metal ions in the waste water. The hydrophilic functional carbon sphere prepared through the method has favorable dispersity and stability, and can be stably dispersed in water for more than one month without precipitating, so that the effect of removing the heavy metal ions in water treatment is improved, the removal rate of the heavy metal ions of the hydrophilic functional carbon sphere is higher than that of a hydrophobic carbon material by 35% under the same conditions, the hydrophilia of the carbon sphere is controlled through controlling the hydrothermal temperature and the hydrothermal time, and the operation is simple.

Description

technical field [0001] The invention relates to the field of inorganic functional materials, in particular to a preparation method of hydrophilic functional carbon spheres and its application in treating heavy metal ion pollution in wastewater. Background technique [0002] The ocean area is vast, accounting for about 71% of the earth's surface area, and it is an important place to maintain the balance of the global ecosystem. Pollutants that flow into the ocean from the land are accepted by the ocean. When the discharge of the inflowing pollutants is lower than the purification capacity of the ocean itself, the marine environment will not change significantly. When the discharge of the inflowing pollutants is higher than the purification capacity of the ocean itself capacity, the oceans are polluted. Marine pollution is characterized by multiple pollution sources, strong persistence, wide spread and difficulty in control, which poses severe challenges to the utilization of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28C02F1/28C02F1/62C02F101/20
Inventor 李银辉陈建新韩健卢爱党苏敏
Owner HEBEI UNIV OF TECH
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