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Preparation method for diatomaceous earth-supported nanometer carbon composite adsorption material

A technology of composite adsorption material and diatomite, which is applied in the field of preparation of diatomite-loaded nano-carbon composite adsorption material, can solve the problems of high reaction equipment and production safety requirements, difficult production wastewater treatment, and potential safety hazards. Adsorption efficiency and adsorption capacity, low cost, good practicability

Inactive Publication Date: 2015-12-09
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The concentrated sulfuric acid, concentrated nitric acid, and hydrogen peroxide used in the preparation process of the preparation method are all highly corrosive raw materials, which have high requirements for reaction equipment and production safety, and there are certain safety hazards, and the production wastewater is difficult to handle and pollutes the environment.

Method used

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  • Preparation method for diatomaceous earth-supported nanometer carbon composite adsorption material
  • Preparation method for diatomaceous earth-supported nanometer carbon composite adsorption material
  • Preparation method for diatomaceous earth-supported nanometer carbon composite adsorption material

Examples

Experimental program
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Embodiment 1

[0015] The specific implementation steps are as follows:

[0016] Raw material introduction: Diatomite comes from Liudaogou mining area in Linjiang, Jilin Province, and its main chemical composition and content are SiO 2 88.19%, Al 2 o 3 3.59%, Fe 2 o 3 1.53%, TiO 2 0.11%, CaO0.62%, K 2 O0.55%, Na 2 O0.11%. Using glucose as carbon source, glucose is analytically pure, white powder, chemical formula is C 6 h 12 o 6 ·H 2 O.

[0017] The preparation process steps are as follows:

[0018] (1) Take 2.5g of diatomite mineral sample and 3.5g of glucose and place them in 75ml of water, and ultrasonically disperse them for 30min, so that the diatomite and glucose are fully and uniformly dispersed in the suspension.

[0019] (2) Add the suspension obtained in step (1) into a 100 mL hydrothermal autoclave, seal it well, and conduct a hydrothermal reaction at a temperature of 180° C. for 12 hours. The obtained precipitated product was alternately washed with absolute ethanol...

Embodiment 2

[0022] The raw materials and steps are the same as in Example 1, except that 3.0 g of diatomaceous earth and 3.5 g of glucose are placed in 75 ml of water; hydrothermal reaction is carried out at 200° C. for 14 hours.

Embodiment 3

[0024] The raw materials and steps are the same as in Example 1, except that 2.5 g of diatomaceous earth and 3.75 g of glucose are placed in 75 ml of water; hydrothermal reaction is carried out at 220° C. for 8 hours.

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Abstract

The invention relates to a preparation method for a diatomaceous earth-supported nanometer carbon composite adsorption material, and belongs to the field of nonmetallic mineral material deep-processing and environmental engineering. The surface and pore passages of diatomaceous earth are taken as micro-reaction areas, glucose or starch is taken as a carbon source, and generated nanometer carbon particles are uniformly supported to the surface and the pore passages of diatomaceous earth to obtain the efficient nanometer carbon composite adsorption material with diatomaceous earth as a supporter by a hydrothermal synthesis method. According to the method, a process is simple, the nanometer carbon particles are uniformly and densely distributed on the surface and in the pore passages of diatomaceous earth, the adsorption of nanometer carbon and diatomaceous earth to pollutants in water is greatly improved, and nanometer carbon and diatomaceous earth have high potential application value in the field of wastewater treatment.

Description

Technical field: [0001] The invention relates to a preparation method of a diatomite-loaded nano-carbon composite adsorption material, which belongs to the fields of deep processing of non-metallic mineral materials and environmental engineering. Background technique: [0002] Due to its large specific surface area, developed pore structure and excellent adsorption performance, carbon-based adsorption materials can be widely used in the fields of water treatment and air pollution control, and are an ideal environmental pollution control material. Activated carbon adsorption materials can remove most of the organic matter in organic wastewater. The removal rate of dissolved organic matter can usually reach more than 90%. Biological oxygen demand (BOD) and chemical oxygen demand (COD) can generally remove 30% to 60%. In addition, it can also effectively remove some some heavy metal ions. However, due to the relatively high price of commercial activated carbon, short service l...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01J20/28
Inventor 孙志明郑水林姚光远李春全
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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