Tungsten Oxide

A tungsten heteropoly acid phtocatalyst is composed of heteropoly acid and its salt, it consists of a central (hetero) atom (P, Si, etc.) and a coordinated (multi) atom W. A group of metal complexes of oxygen groups bridged by oxygen atoms into space, which can be widely used in homogeneous and heterogeneous catalysis systems. Because of the development of petrochemical industry, especially the fine chemical industry, the multifunction of catalysts has become a new research target, tungsten heteropoly acid photocatalyst is a bifunctional catalytic material with acidity and basicity and redox property. It is an environmentally friendly catalyst and can reduce environmental pollution and equipment corrosion. Therefore, it is of great significance to study the new catalytic process. Under visible light or UV irradiation, tungsten heteropoly acid is excited to become a strong oxidant and can oxidize various organic compounds in water. Its photocatalytic activity is almo...

Not long ago, the first case of illegal dumping of landfill leachate and caused environmental pollution of Yunnan which has caused much concern has been adjudged; the defendant because of surrender and pleaded guilty with a good attitude, has jailed for 2 years and will respite for 2 years, also he was imposed a fine of 20,000 and do some service as a environment volunteer. It is reported that this case is because the defendant privately dumped his transportation of 29 cars which totaled 568.34 tons of pollutants into the environment, under the case of known the heavy metals, organic compounds should be transported to a special institution for professional treatment, and thus caused serious pollution to the surrounding environment. In this regard, the court verdict this case based on the principle of "spoiler repairs, polluter controls".   Landfill leachate is the high concentration of organic or inorganic ingredients liquid which generates from the landfill garbage pi...

In June, a primary school of Huayuan County of Hunan Province, China, occurred a serious mercury poisoning (Minamata disease) of many students, which resulted in 147 students urine mercury exceeded; its cause is a fifth-grade student took 50 ml of the remaining mercury in the wok of a waste workshop in a mineral water bottle to school, and gave it to the other students for playing. According to the source, this workshop was illegal constructed and operated unauthorized without Environmental Impact Assessment (EIA) and related procedures. For this accident, I am showing my deep sadness, someone innocent was suffered a serious injury because some unscrupulous manufacturers do not manage their hazardous substances.   China as the largest country which uses and emissions most  in global mercury, and has faced with the tremendous pressure to reduce emissions of mercury reductions in the "global mercury instrument" negotiations. This year, on June 18th to 19th, "the sec...