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Composite photothermal conversion material based on shaddock peel as well as preparation and application of composite photothermal conversion material

A technology of grapefruit peel and composite light, applied in the field of solar thermal conversion, can solve the problems of high cost and complicated preparation process, and achieve the effects of ultra-low cost, wide material sources, and improved photothermal conversion rate.

Active Publication Date: 2021-08-13
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides a composite photothermal conversion material based on pomelo peel and its preparation method to solve the problems of high cost and complicated preparation process of the solar photothermal conversion material in the prior art

Method used

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  • Composite photothermal conversion material based on shaddock peel as well as preparation and application of composite photothermal conversion material
  • Composite photothermal conversion material based on shaddock peel as well as preparation and application of composite photothermal conversion material
  • Composite photothermal conversion material based on shaddock peel as well as preparation and application of composite photothermal conversion material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The preparation of grapefruit peel composite photothermal conversion material is prepared by the following steps:

[0038] (1) Take the fresh pomelo peel, cut off the yellow skin and keep the white pomelo sac, the size of the pomelo sac is 3*3*1 (cm);

[0039] (2) Mix pomelo capsules with manganese carbonate and water (concentrations of manganese carbonate aqueous solution are 0, 10, 15, 20mg / ml, use 40ml), and shake for 5h to obtain pomelo capsules adsorbed with manganese carbonate. Manganese pomelo sacs were dried (for example, at 80°C for 10 hours), and the completely dried pomelo sacs adsorbed with manganese carbonate were carbonized. The carbonization treatment conditions were: under nitrogen atmosphere, the heating rate was 5°C / min, After 2 hours of heat preservation, four different grapefruit peel composite photothermal conversion materials were obtained; when the concentration of manganese carbonate aqueous solution was 15 mg / ml, the corresponding grapefruit pee...

Embodiment 2

[0041] Example 2, test of distilled water evaporation rate of grapefruit peel composite photothermal conversion material

[0042](1) Place the grapefruit peel composite light-to-heat conversion material (MCPP prepared by 15 mg / ml manganese carbonate) in Example 1 in a foam with a diameter of 2.2 cm that has been cut and a through hole of 2*2 cm in the middle, The light-to-heat conversion material is placed in the through hole of the foam, and it is placed in a container filled with water, and the area of ​​the water surface in the container is greater than or equal to the area of ​​the foam cross section (for example: the foam cross section area is 99% of the water surface area ), and the photothermal conversion material is in direct contact with the water surface. The function of the foam is to avoid the evaporation of water other than the non-grapefruit skin composite light-to-heat conversion material, resulting in a high evaporation rate. Using a solar simulator equipped w...

Embodiment 3

[0046] (1) Fabrication of evaporation device for grapefruit peel composite light-to-heat conversion material

[0047] Schematic diagram of the evaporator Figure 5 As shown, it includes a water storage device 1, a light-to-heat conversion material 5, a water absorbing device and a heat insulating material 3; the water absorbing device includes a water absorbing paper 4 and a water absorbing rod 2, and the heat insulating material 3 is located above the water surface in the water storing device 1, specifically at The open end of the water storage device (seal the open end), the water-absorbing paper 4 is arranged on the upper surface of the heat insulating material 3 (heat-insulating foam, polystyrene foam), the light-to-heat conversion material 5 is placed on the water-absorbing paper 4, and the water-absorbing rod 2 Insert the insulation material 3, one end into the water, and the other end in contact with the absorbent paper 4. The photothermal conversion material is the ph...

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Abstract

The invention belongs to the technical field of solar photo-thermal conversion, and discloses a composite photo-thermal conversion material based on shaddock peel and preparation and application of the composite photo-thermal conversion material. The method comprises the following steps of: (1) removing yellow outer skins of shaddock peels to obtain white shaddock sacs; and (2) soaking the shaddock sacs in an aqueous solution of manganese carbonate, and carrying out adsorption treatment, drying and carbonization treatment to obtain the composite photo-thermal conversion material based on shaddock peel. The method disclosed by the invention is simple, wide in raw material source and low in cost, and meanwhile, the prepared composite photo-thermal conversion material based on shaddock peel is good in photo-thermal conversion effect and excellent in salt-resistant effect. The composite photo-thermal conversion material based on shaddock peel is used for the field of solar seawater desalination and the field of purification of printing and dyeing wastewater and / or heavy metal ion wastewater, and the purification effect is good.

Description

technical field [0001] The invention belongs to the technical field of solar photothermal conversion, and in particular relates to a composite photothermal conversion material based on pomelo peel and its preparation method and application. The photothermal conversion material is applied in the field of solar seawater desalination and / or the field of wastewater purification. Background technique [0002] In order to solve the problem of water shortage in the world, scientific researchers have adopted different water treatment technologies to desalinate seawater. At present, the commonly used seawater desalination technologies are: multi-effect flash evaporation, multi-effect seawater desalination, membrane distillation, reverse osmosis membrane, etc. However, most of these methods are composed of a complete set of processes. The equipment is huge, covers a large area, and requires a lot of energy to drive. In addition, the corrosion of equipment by seawater and the scaling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14C01G45/02C01B32/05C02F103/08
CPCC02F1/14C01B32/05C01G45/02C02F2103/08Y02A20/212Y02A20/124Y02A20/142
Inventor 肖凯军叶鹏辉谌凯银玉容
Owner SOUTH CHINA UNIV OF TECH
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