With more than 20 years of research on emissions treatment of fuel burning processes, technology of making metal oxide catalysts of female professors, Dr. Le Minh Thang, Chemical Technology Institute (Hanoi University of Science and Technology) and colleagues who have been granted by the Intellectual Property Department of Patent 1-0020257 in 2019. Since then, Professor, Dr. .
Professor, Dr. Le Minh Thang researches in the field of catalysis to treat exhaust gases of fuel combustion and organic synthesis processes, protecting the environment, including: exhaust gases from automobiles, motorcycles, internal combustion engines, emissions from fuel-using industries, emissions from thermal power plants, toxic CO from fires, coal mine gases, emissions from factories, and volatile organic wastes from waste pyrolysis plants, especially wastes from rubber pyrolysis plants. aromatic rings such as exhaust gases from paint processing and processing processes, unsaturated polyester synthesis... Emissions from these sources contain polluting gases, mainly hydrocarbons, CO... which have adverse effects on the environment and human health.
The research field of exhaust gas catalysis includes four main research areas: three-component catalysts for treating exhaust gases of gasoline engines, catalysts to treat CO toxic gas at normal temperature conditions, catalysts to remove NOx from exhaust gases from thermal power plants, and catalysts for treatment of volatile aromatic compounds from rubber pyrolysis plants and plastics production. Currently, the researches on the catalytic flow of scientist Le Minh Thang are being completed to prepare for the process of widespread commercialization, community service, and environmental protection.
Professor, Dr. Le Minh Thang guides students in the laboratory. Photo: Phuong Hoa/VNA
Professor Le Minh Thang added: The advantage of this exhaust gas treatment and research method is that it can handle many substances in the air at the same time instead of having to treat each object separately. The process by which Professor Thang and his colleagues found the catalytic mixture was a long one, and the foundation was based on a lot of fundamental research. Although in the world there have been many studies on catalysis of mixed transition metal oxides with many applications, the decisive factor for the catalytic activity is the ratio of each oxide component. A transition metal usually does not have outstanding activity, so it is necessary to use several transition metals together to provide multiple active sites for different stages of the reaction in the exhaust gas treatment process.
In addition, the product's advantages are significantly reduced cost compared to imported products from expensive precious metals, higher stability because precious metal catalysts are easy to sinter in high temperature environment and easily lose activity after a short time when meeting chlorine and sulfur in the exhaust gas. The product has been initially commercialized, some waste rubber pyrolysis plants in Hai Duong have installed this catalyst on the exhaust system at a cost of about 100 million VND/time and after at least 2-3 years, new installed factories need to replace the catalyst.
Professor, Dr. Le Minh Thang further revealed, as a member of the Asia-Pacific Catalyst Association (APACS), wants to find a foreign catalyst manufacturing enterprise to transfer technology and create more commercial products. During the search period, the group is still willing to accept requests for direct emission treatment from domestic factories.
Exhaust gas treatment is the process of controlling and preventing pollution components from coming into contact with the environment. Based on the characteristics and different concentrations of pollution, it is possible to choose suitable technologies to thoroughly treat the waste source. In the process of industrialization and modernization of the country taking place strongly along with the Fourth Industrial Revolution taking place rapidly globally, with the goal of protecting the environment and avoiding the negative impacts of climate change that are seriously affecting human health, at the 26th Conference of the Parties to the United Nations Framework Convention on Climate Change (COP26), for the first time, Vietnam developed measures to reduce greenhouse gas emissions and Vietnam committed to taking measures to reduce greenhouse gas emissions for the first time, and Vietnam committed to implementing measures to reduce greenhouse gas emissions and implement measures that are seriously affecting human health. net zero emissions (Net Zero) by 0.
Vietnam has thousands of medium and small industrial plants, the treatment of waste gas plays an important role in many fields with the goal of improving environmental quality. Currently, most factories do not have exhaust gas treatment technology, but only use simple water absorption or coal adsorption methods to treat emissions, so the quality is not high, still creating a "burden" for later environmental treatment because these measures still retain pollutants, but do not treat them thoroughly. Research by Professor, Dr. Le Minh Thang, Institute of Chemical Engineering (Hanoi University of Science and Technology) has partly solved the environmental "problem" with the highest quality.
According to VNA/Newspapers
