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Solar photothermal purification method of water based on corncob integral carbon material

A technology of carbon materials and corn cobs, applied in chemical instruments and methods, general water supply conservation, water/sewage treatment, etc., can solve the problems of high cost, complicated preparation process, and no solution proposed, and achieve low cost and simple process Reliable, water-purity inexpensive results

Inactive Publication Date: 2019-03-19
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recent research is mainly aimed at improving the efficiency of solar thermal conversion and designing materials, including improving the absorption capacity of materials for solar energy, heating area control, water supply, and evaporation transmission control, but there are disadvantages such as complex preparation process and high cost of materials. No scientifically sound solution has yet been proposed

Method used

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  • Solar photothermal purification method of water based on corncob integral carbon material
  • Solar photothermal purification method of water based on corncob integral carbon material
  • Solar photothermal purification method of water based on corncob integral carbon material

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A method for purifying water based on corn cob monolithic carbon material solar light and heat, comprising the following steps:

[0032] 1) Soak a section of corncob in ethanol and distilled water for 6 hours, and then dry it in a vacuum drying oven at 60°C for 24 hours to obtain a dried corncob.

[0033] 2) Put the dried corncobs obtained in step 1) in a tube furnace, raise the temperature to 400°C at a rate of 5°C / min under a nitrogen atmosphere, keep the temperature for 4h, and cool naturally to obtain a monolithic carbon material.

[0034] 3) washing the pyrolysis product obtained in step 2) with ethanol to remove impurities in the pores of the monolithic carbon material;

[0035] 4) The washed product obtained in step 3) was washed three times with deionized water, and the obtained solid was dried in an oven at 60°C for 24 hours to obtain a corncob monolithic carbon material.

[0036] The digital photo of the corncob used in the present embodiment and its carboniz...

Embodiment 2

[0041] A kind of method based on corncob integral carbon material solar energy photothermal purification dye aqueous solution, comprises the following steps:

[0042] 1) Soak a section of corncob in ethanol and distilled water for 6 hours, and then dry it in a vacuum drying oven at 60°C for 24 hours to obtain a dried corncob.

[0043] 2) Put the dried corn cobs obtained in step 1) into a tube furnace, raise the temperature to 400°C at a rate of 5°C / min under a nitrogen atmosphere, keep the temperature for 4h, and cool naturally to obtain a carbonized product.

[0044] 3) Wash the carbonized product obtained in step 2) with de-ethanol to remove impurities in its pores;

[0045] 4) The washed product obtained in step 3) was washed three times with deionized water, and the obtained solid was dried in an oven at 60°C for 24 hours to obtain a corncob monolithic carbon material.

[0046] The corn cob monolithic carbon material prepared in this embodiment is used for the test of the...

Embodiment 3

[0048] A method for purifying seawater with solar light and heat based on corn cob monolithic carbon material, comprising the following steps:

[0049] 1) Soak a section of corncob in ethanol and distilled water for 6 hours, and then dry it in a vacuum drying oven at 60°C for 24 hours to obtain a dried corncob.

[0050] 2) Put the dried corn cobs obtained in step 1) into a tube furnace, raise the temperature to 400°C at a rate of 5°C / min under a nitrogen atmosphere, keep the temperature for 4h, and cool naturally to obtain a carbonized product.

[0051] 3) Use ethanol to remove the excess by-products in the pores of the carbonized product obtained in step 2);

[0052] 4) The washed product obtained in step 3) was washed three times with deionized water, and then dried in an oven at 60°C for 24 hours to obtain a corncob monolithic carbon material.

[0053] The corn cob water evaporation device prepared in this embodiment is used for the test of seawater evaporation rate, at 10...

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Abstract

The invention belongs to fields of solar photothermal conversion, sea water desalinization and new materials and relates to a solar photothermal purification method of water based on corncob integralcarbon material. According to the principle, the natural structural feature of corncob is utilized, the corncob is carbonized at a certain temperature but not powdered, and the integral corncob-basedcarbon material is prepared and is utilized to perform solar photothermal evaporation of water; part of the corncob integral carbon material is vertically soaked in water to be purified, and the otherpart is vertically exposed in air; clean water is produced with water vapor under sunlight irradiation. The method herein is suitable for purifying water, including sea water, bitter salty water, high-fluorine water, industrial wastewater, domestic wastewater and the like. Agricultural product wastes and renewable clean energy, solar energy, are utilized herein to produce clean fresh water; the method herein is simple and efficient, low in carbon, green and free of pollution; the water purification method is provided herein.

Description

technical field [0001] The invention relates to a method for purifying water with solar light and heat based on a corncob integral carbon material, and belongs to the fields of solar light and heat conversion, seawater desalination and new materials. Background technique [0002] With the development of society and the continuous improvement of human industrialization and living standards, water resources have become one of the key factors restricting human development. Drought and water pollution are getting worse all over the world, and the serious shortage of fresh water resources directly threatens the living environment and health of human beings. The water quality of tens of millions of residents in remote areas of my country is not up to standard, and they suffer from brackish water and high-fluorine water, which lead to the deterioration of their health. Therefore, it is urgent to improve the quality of drinking water. Seawater desalination and sewage purification a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14
CPCC02F1/14Y02A20/212
Inventor 赵宗彬孙洋邱介山
Owner DALIAN UNIV OF TECH
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