Preparation method of novel three-dimensional solar photo-thermal oil-water separator

Abstract

The invention discloses a preparation method of a novel three-dimensional solar photo-thermal oil-water separator. The preparation method comprises the following steps: cutting foam Cu into a rectangle, and respectively cleaning the rectangular foam Cu with hydrochloric acid, absolute ethyl alcohol, acetone and deionized water for later use; preparing a mixed aqueous solution of sodium hydroxide and ammonium persulfate, soaking the cleaned the rectangular foam Cu in the mixed aqueous solution, taking out the rectangular foam Cu, cleaning the rectangular foam Cu with deionized water, soaking the rectangular foam Cu in sodium sulfide, taking out the rectangular foam Cu, bending the rectangular foam Cu into an inverted U shape, and enabling the inverted U-shaped Cu<x>S / foam Cu to vertically penetrate through a supportable substrate to obtain a Cu<x>S composite photo-thermal film with a three-dimensional hierarchical structure. The Cu<x>S composite photo-thermal film with the three-dimensional hierarchical structure prepared by the method adopts a composite copper-based sulfide material which is low in cost, high in light absorption capacity and high in photo-thermal conversion efficiency, so the manufacturing cost of a device is greatly reduced, and the stability of the device is improved; and photo-thermal efficiency is high, separation performance is good, any electric drive isnot needed, and cost performance is high.

Description

technical field [0001] The invention relates to the technical field of membrane separation, in particular to a preparation method of a novel three-dimensional solar photothermal oil-water separator. Background technique [0002] Water is one of the most important resources for public health and social development. However, the shortage of fresh water has become one of the important issues of social concern. To solve this problem, a new water treatment technology that can recover fresh water from wastewater or seawater is urgently needed. In recent years, solar distillation technology has attracted great attention in the fields of seawater desalination and sewage treatment due to its zero emission of carbon dioxide. Its working principle is: put the photothermal film on the water surface, absorb solar energy and convert it into heat energy, accelerate the generation of water vapor from the gas-liquid interface through the heat energy, and finally condense to obtain fresh wa...

AI Technical Summary

Problems solved by technology

However, these photothermal films still show obvious deficiencies, they are susceptible to oil contamination during the oil-water separation process, resulting in a significant drop in freshwater extraction efficiency.

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