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Photo-thermal water evaporation device based on loofah sponge biomass

A loofah and biomass technology, applied in the field of water treatment, can solve the problems of complex forming process of graphene porous materials, restrictions on the application of large-scale solar water evaporation materials, poor cycle stability of organic polypyrrole materials, etc.

Inactive Publication Date: 2020-02-28
LUDONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the expensive price of nano-gold, the complex molding process of graphene porous materials with high specific surface area and porosity, and the poor cycle stability of organic polypyrrole materials restrict the application of large-scale solar water evaporation materials, and there is an urgent need for low-cost photothermal Development of Conversion Materials and Their Preparation Process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] The loofah slices were placed in a high-temperature furnace, and the temperature was raised to 500 ºC at a rate of 3 ºC / min under a nitrogen flow rate of 100 mL / min, and kept for 4 h to obtain carbonized loofah slices. at 1 kW·m -2 Under the irradiation of simulated sunlight, the evaporation rate of water is 1.21 kg m -2 h -1 .

example 2

[0017] The loofah slices were placed in a high-temperature furnace, and the temperature was raised to 800 ºC at a rate of 10 ºC / min under a nitrogen flow rate of 80 mL / min, and kept for 1 h to obtain carbonized loofah slices. at 3 kW·m -2 Under the irradiation of simulated sunlight, the evaporation rate of water is 3.37 kg m -2 h -1 .

example 3

[0019] The carbonized loofah slices were soaked in dopamine solution for 4 h, dried and placed in a high temperature furnace for calcination. Under the protection of nitrogen gas at 100 mL / min, the temperature was raised to 800 ºC at a rate of 5 ºC / min and kept for 2 h. Then the intermediate product was soaked in nickel nitrate solution, dried and then placed in a high-temperature furnace. Under the protection of nitrogen gas at 200 mL / min, the temperature was raised to 800 ºC at a rate of 5 °C / min. Then, a mixed gas of nitrogen and ethanol was introduced and kept at 800°C for 7 h to obtain carbonized loofah sheets with carbon nanotubes deposited. Place it in a container filled with heavy metal ions (Ni 2+ 、Ba 2+ , Mn 2+ 、Cu 2+ etc.), which are self-floating on the water surface. at 1 kW·m -2 Under the irradiation of simulated sunlight, the evaporation rate of water is 1.23kg m -2 h -1 . Ni in the collected water 2+ 、Ba 2+ , Mn 2+ 、Cu 2+ The concentration is lower...

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Abstract

The invention provides a design of an interface solar-energy steam generator based on loofah sponge biomass. The interface solar-energy steam generator based on loofah sponge biomass is used for wastewater treatment. Loofah sponge is used as a raw material, biomass charcoal sheets with porous structures are obtained through the steps of forming, carbonizing and the like, a prepared material has self-floating performance, sunlight can be efficiently absorbed and converted into heat energy, and good solar energy water evaporation performance is obtained. After in situ deposition of carbon nanotubes on the biomass charcoal sheets, the water evaporation performance is improved. The loofah sponge is used as a raw material, the raw material is environment-friendly and renewable, the water evaporation device preparation process is simple, and large-scale production can be realized; water evaporation operation is convenient, no specially-assigned person is needed for nursing, and good application prospects are achieved in the field of wastewater treatment.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to the design of an interface solar steam generator and its application in wastewater treatment. Background technique [0002] In recent years, chemical, metallurgical and other industries will produce a large amount of wastewater containing dyes and heavy metal ions in the production process. If such wastewater is discharged directly, it will cause irreversible pollution to the water body and the surrounding environment. Therefore, the treatment of wastewater containing dyes and heavy metals is very important. important. There are many kinds of dyes and heavy metal ions with different toxicity and different treatment methods, and the treatment process is more complicated. Evaporation can be used for wastewater treatment, and steam is used to provide heat energy, resulting in high energy consumption. Compared with traditional fossil energy, solar energy is an inexhaustib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14F22B1/00
CPCC02F1/043C02F1/14F22B1/006Y02A20/124Y02A20/142Y02A20/212
Inventor 杨丽霞张超凡陈厚梁英柏良久杨华伟魏东磊王文香
Owner LUDONG UNIVERSITY