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
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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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