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Can Plastic White Pollution Turn Cleaner? Experts Say So!
Mar 21, 2018

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England and Brazil joint research team on the ACS applied materials and interfaces published an article, it describes how the synthetic dyes are used in the global apparel industry plastic processing in packaging and containers.

Using polystyrene as raw material, a new method of freezing and expansion is adopted to make a new kind of intelligent nano-particle material.

In solid conditions, it can be used to remove harmful synthetic dyes, which are carcinogenic and are a chronic reproductive toxin in humans and animals.

The project was conducted by professor Julian Eastoe of the department of chemistry at Bristol university and professor Rodrigo JdeOliveira of the state university of brabalba. Professor east commented: 

"Released recently, the BBC series" the blue planet II "emphasizes: dealing with the size of the plastic debris in the ocean (so-called" white pollution "), and the development process of decomposition, waste plastic recycling and reusing is crucial.

The study suggests a good way to turn a large amount of plastic white pollution into another resource, to treat environmental damage elsewhere in the form of water materials.

Recent studies have shown that these pollutants are causing serious damage to aquatic ecosystems: the development of methods to remove these compounds from industrial wastewater is becoming increasingly important.

The breakthrough will be of interest to water companies around the world, and the next stage will be to study how to remove other pollutants.Pollutants (such as dye) can be resolved by the activity of the oxidation process (AOP), which usually involves polyphase (solid) light catalyst, with less harmful pollutants can be converted to the final product, such as water and carbon dioxide.

In the new study, waste plastics (polystyrene) from cyclohexane as solvent, freezing temperature is 6 ℃) frozen formation of the porous solid using again, once the solvent is removed, will leave the expansion of the solid polystyrene foamed plastic,the high specific surface area is then coated with photocatalytic nanoparticles to form a solid photocatalyst, such as RhodamineB, and then the contaminated waste water samples are introduced to dissolve the dye.The dye is banned in food production but is widely used in sewage treatment plants to detect leaks.