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Natural mineral/activated carbon composite material and preparation method thereof

A technology of natural minerals and composite materials, applied in chemical instruments and methods, alkali metal oxides/hydroxides, water pollutants, etc., can solve the problems of difficult to control production conditions, low adsorption capacity, and high production costs of adsorbents, To achieve the effect of improving wettability and improving adsorption efficiency

Inactive Publication Date: 2019-11-22
邓晖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To solve the problem of drinking water safety, the key point in the water production process is to transform the process. At present, the water supply treatment plant generally adopts the coagulation method mainly based on inorganic polymer flocculants and supplemented by the micro-flocculation-oxidation method of permanganate to purify water quality. It has a certain effect on conventional water purification, but its production conditions are difficult to control and the price is relatively expensive. The environmental effects of residual aluminum and the residual chromaticity and high corrosion of iron salts and permanganates will also affect human health. , Therefore, those skilled in the art have proposed the use of adsorption for water pollution treatment, which is a method of removing some substances (pollutants, substances to be recovered) through porous materials (larger specific surface area) or materials with special selective adsorption groups. Adsorption technology can not only achieve the goal of wastewater purification, but also realize the resource utilization of waste
Natural minerals, taking attapulgite as an example, is a natural crystalline hydrated magnesium aluminum silicate non-metallic clay mineral. Its special structure and large specific surface area determine its good adsorption performance and colloidal properties; Not only can it well adsorb pesticides, disinfection by-products and trace organic pollutants in drinking water, but it can also effectively remove trace heavy metals such as iron, manganese, copper, mercury, chromium, and arsenic in water. It is widely used in In industrial wastewater treatment and drinking water advanced treatment, but the adsorption capacity of natural mineral adsorbents for organic matter and chloride ions in industrial sewage or drinking water sources is relatively low and the production cost of adsorbents is usually relatively high. Therefore, a An adsorbent with high adsorption capacity for organic matter and chloride ions and low production cost is one of the technical problems urgently needed by those skilled in the art

Method used

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  • Natural mineral/activated carbon composite material and preparation method thereof
  • Natural mineral/activated carbon composite material and preparation method thereof
  • Natural mineral/activated carbon composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Weigh 10g asphalt powder, 20g KOH powder and 20g attapulgite, put them in a pulverizer and stir for 2min to obtain a uniform powder mixture;

[0032] (2) Put the mixture in a corundum porcelain boat, put it into a horizontal tube furnace and pass nitrogen gas, raise the temperature in the horizontal tube furnace to 800 °C at a rate of 10 °C / min and maintain it for 60 min, After the temperature in the horizontal tube furnace is naturally cooled to room temperature, take out the reaction product; put the product into a beaker and add 1L of water for stirring, while continuously adding concentrated hydrochloric acid and measuring the pH value of the solution at any time until the pH value is 2. Stop Hydrochloric acid was added dropwise, and finally washed with water to neutrality, and placed in an oven, dried at 80°C to obtain a natural mineral / activated carbon composite material.

Embodiment 2

[0034] (1) Weigh 10g of catalytic cracking oil slurry, 20g of NaOH powder and 10g of bentonite, put them in a pulverizer and stir for 3min to obtain a uniform powdery mixture;

[0035] (2) Put the mixture in a corundum porcelain boat, put it into a horizontal tube furnace and feed nitrogen gas, raise the temperature in the horizontal tube furnace to 700 °C at a rate of 15 °C / min and maintain it for 90 min, After the temperature in the horizontal tube furnace is naturally cooled to room temperature, take out the reaction product; put the product into a beaker and add 1L of water for stirring, while continuously adding concentrated hydrochloric acid and measuring the pH value of the solution at any time until the pH value is 2. Stop Hydrochloric acid was added dropwise, and finally washed with water until neutral, and placed in an oven, dried at 90°C to obtain a natural mineral / activated carbon composite.

Embodiment 3

[0037] (1) Weigh 10g vacuum residue, 20g ZnCl 2 powder and 5g vermiculite, placed in a pulverizer and stirred for 5min to obtain a uniform powdery mixture;

[0038] (2) Put the mixture in a corundum porcelain boat, put it into a horizontal tube furnace and pass nitrogen gas, raise the temperature in the horizontal tube furnace to 900 °C at a rate of 20 °C / min and maintain it for 100 min, After the temperature in the horizontal tube furnace is naturally cooled to room temperature, take out the reaction product; put the product into a beaker and add 1L of water for stirring, while continuously adding concentrated hydrochloric acid and measuring the pH value of the solution at any time until the pH value is 2. Stop Hydrochloric acid was added dropwise, and finally washed with water until neutral, and placed in an oven, dried at 100°C to obtain a natural mineral / activated carbon composite.

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Abstract

The invention discloses a preparation method of a natural mineral / activated carbon composite material, which comprises the following steps: (1) mixing a carbon-containing precursor, an activator and anatural mineral, and pulverizing the mixture to obtain a powdery mixture; (2) carrying out roasting treatment on the mixture, cooling the mixture to room temperature, washing the reaction product with acid, washing the reaction product with water to be neutral, carrying out suction filtration, and drying the product to obtain a natural mineral / activated carbon composite material; wherein the carbon-containing precursor is one or more of catalytic cracking slurry oil, asphalt and vacuum residuum. According to the invention, natural minerals and activated carbon are activated and compounded, sothat the prepared composite material not only can improve the adsorption performance of organic matters and chloride ions in sewage, but also can significantly reduce the production cost.

Description

technical field [0001] The invention belongs to the technical field of activated carbon processing, and in particular relates to a natural mineral / activated carbon composite material and a preparation method thereof. Background technique [0002] Water is an extremely important compound in human life. Water accounts for about 60% of the human body. Water is also an important resource for producing food, clothing and maintaining our health and environment. Therefore, it is very important to obtain safe drinking water around the world. With the obvious acceleration of industrialization and urbanization in our country, a large amount of various waste water is discharged, the water quality of the river network seriously exceeds the standard, and sudden water pollution incidents occur from time to time, such as water source water phenol pollution, algae bloom outbreaks and heavy metals Pollution, etc. The discharge of these sewage has caused a non-negligible impact on the surroun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28C02F1/28C02F101/20C02F101/30
CPCB01J20/12B01J20/14B01J20/20B01J20/2808B01J20/28083C02F1/281C02F1/283C02F2101/20C02F2101/30
Inventor 邓晖马新龙徐成根李圣平
Owner 邓晖
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