Hong Kong researchers waste plastics cracking process

Published on:2015/1/27 9:25:55

Keyword:Catalyst, waste plastics, PVC, plastic, styrene, vinyl, polypropylene, polyethylene
Introduction:A university of ordinary laboratory can conquer the biggest technical challenge to the plastic recycling industry?Associate professor at the Hong Kong...

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university of ordinary laboratory can conquer the biggest technical challenge to the plastic recycling industry?Associate professor,
at the Hong Kong institute of education is engaged in chemical research Zhou Zhuohui hope so.
of his research is in order to conquer an increasingly prominent problem: how to deal with 7 million people in Hong Kong produced 6 million tons of solid waste every year.
, according to Hong Kong environment bureau in 2011 Hong Kong residents daily life garbage at 1.36 kilograms per capita, far higher than that of Seoul 0.95 kg to 0.77 kg of Tokyo.
according to the present rate of waste generated, the three landfill site is located in the New Territories are expected to fill in the end of this decade.But only 1014 square kilometers,
Hong Kong smaller than New York City, is a treasure land.
Zhou Zhuohui research focuses on the "split" or decomposition of polyethylene, polypropylene, polyvinyl chloride (PVC) and polystyrene.
he said: "we were able to restore a PS, PVC, PE and PP for organic fuel."Split polymer need heating and pressure -
& have spent"High temperature decomposition," sometimes used catalysts.Problem is to produce high temperature with X-ray rite504 high pressure, has always been to renewable industry since the cost of such sensitive industry has brought.
Zhou Zhuohui said: "it really is a very big problem for me. How to develop a catalyst, react with inert polymer."
Zhou Zhuohui says he development of catalyst, less than very clock can polymer pyrolysis.This kind of catalyst can work at low pressure and low temperature, energy saving up to 95%.
he said: "I've developed catalyst cleaner, faster."& have spentHis postdoctoral research is in, a Nobel laureate in chemistry at the university of Strasbourg Jean Marie Under the guidance of the Lehn implementation.
fully cracking constitutes a complex plastic chain with ring may take 20 minutes to 1 hour.This kind of treatment of waste plastics, you won't have to increase the burden of landfill, but will produce carbon dioxide, a greenhouse gas.
Zhou Zhuohui refused to disclose details, he has been in Hong Kong, the European Union, the United States, and submit the application for a patent in our country.Although he wrote dozens of research article, but not yet published its latest research results.
he readily lead journalists visited the lab of his own.
Zhou Zhuohui after be being consumed by the end of the current experiment is limited to one kilogram of packing samples, such as body spray bottle with dish detergent.
there is no doubt of his research is in progress.
Zhou Zhuohui said: "I'm still in dealing with the most basic scientific problems. For example, if I could control the catalytic reaction, so as to control the length of the hydrocarbon?"
in output point of view, he is not sure he PVC pyrolysis method - a full complex molecules of hydrogen and chlorine atom chain & have spent- & have spentWhether can produce highly poisonous chlorine or hydrochloric acid.He present in the test of nitric oxide, sulfur dioxide, and carcinogenic emissions of particulate matter.

Key-word:Catalyst, waste plastics, PVC, plastic, styrene, vinyl, polypropylene, polyethylene