Spherical bead like walnut shell based porous carbon adsorption material and preparation method and applications thereof

A technology of adsorption materials and walnut shells, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of large specific surface area of ​​carbon materials and collapse of carbon framework, and achieve increased specific surface area and good stability Performance and regenerative properties, and the effect of ultra-high specific surface area

Pending Publication Date: 2019-09-20
HENAN UNIV OF URBAN CONSTR
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Problems solved by technology

However, these materials have no template support in the alkali activation process, which will lead to the collapse of the carbon framework. Therefore, although the obtained carbon materials have a large specific surface area, only micropores and small mesoporous (<4nm) porous carbon materials can be obtained.

Method used

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  • Spherical bead like walnut shell based porous carbon adsorption material and preparation method and applications thereof
  • Spherical bead like walnut shell based porous carbon adsorption material and preparation method and applications thereof
  • Spherical bead like walnut shell based porous carbon adsorption material and preparation method and applications thereof

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preparation example Construction

[0055] The embodiment of the present invention discloses a method for preparing a spherical microbead-shaped walnut shell-based porous carbon adsorption material, and the specific steps are as follows:

[0056] (1) Preparation of walnut shell-based solution

[0057] Wash walnut shells from Walnut Garden, Xinji Township, Lushan County, Pingdingshan City, Henan Province, with tap water, dry, crush, and sieve to 200-400um to make walnut shell powder, and add the walnut shell powder obtained in the above steps to the solution The concentration is 10%-20% phosphoric acid solution, the mass ratio of walnut shell powder to phosphoric acid solution is 1:2-4, the temperature is 50-70°C, and the water bath is heated for 1h-3h; 100--120°C Dry under vacuum for 12-24h. Grinding treatment to obtain the walnut shell active raw material. Prepare 600g-1000g of 2%-4% polyvinyl alcohol (PVA) solution, and stir evenly under the condition of 90°C to completely dissolve it, and the solution becom...

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Abstract

The invention discloses a preparation method of a spherical bead like walnut shell based porous carbon adsorption material. The preparation method comprises following steps: at first, activating walnut shell powder by phosphoric acid, preparing a uniform solution, wrapping the surface of cenospheres by the solution, filling the solution into the cavities of the cenospheres , carrying out carbonization, removing fly ash to obtain a hollow structure of fly ash, and finally generating micro holes by a high temperature alkali activation method to obtain the hierarchical porous carbon material with a high specific surface area. Cheap agricultural wastes namely walnut shells are taken as the carbon source, solid industrial wastes namely fly ash cenospheres (FACs) are taken as the hard template, and the prepared hierarchical porous carbon material is used to process sewage of beta-lactam antibiotics, and the processing effect is good.

Description

technical field [0001] The invention relates to the technical field of preparation of environmental functional materials, in particular to a spherical microbead-shaped walnut shell-based porous carbon adsorption material and a preparation method and application thereof. Background technique [0002] At present, β-lactam antibiotics (BLAs) have become the most widely used class of antibacterial drugs, and are widely used in the treatment and prevention of diseases in human medicine, poultry, livestock and aquaculture. The abuse and illegal use of drugs have led to a large amount of antibiotic residues entering water bodies and soil through human and animal excretion. Nowadays, in many countries including China, β-lactam antibiotics are used in the effluent of sewage treatment plants, surface water and Groundwater is frequently detected as a potential new pollutant in the environment. Therefore, it is of great research significance to establish a rapid and cost-effective meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F101/30
CPCB01J20/20B01J20/28019B01J20/28021B01J20/3057B01J20/3078C02F1/283B01J2220/4881C02F2101/305
Inventor 毛艳丽宋忠贤黄真真陈若曦田净沙郭鹏任高峰延旭崔弼峰张东令付清龙刘盼扶咏梅孙高升赵亮罗煜昽
Owner HENAN UNIV OF URBAN CONSTR
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