DIURNAL CHANGE OF PAHS AND NITRO-PAHS IN THE ATMOSPHERIC PARTICULATE MATTER AT THE ROADSIDE IN HO CHI MINH CITY, VIETNAM

Joint Research on Environmental Science and Technology for the Eart

Atmospheric polycyclic aromatic hydrocarbons in air samples of Hanoi

Joint Research on Environmental Science and Technology for the Eart

SECONDARY GENERATION OF GASEOUS HONO AND ITS EFFECT ON OUR HEALTH

Joint Research on Environmental Science and Technology for the Eart

Polycyclic aromatic hydrocarbons and nitro-polycyclic aromatic hydrocarbons in urban air particulate matter in Ho Chi Minh City, Viet Nam

Joint Research on Environmental Science and Technology for the Eart

INVESTIGATION ON AIR POLLUTION IN VIETNAM : VOLATILE ORGANIC COMPOUNDS IN HANOI AND HO CHI MINH

Joint Research on Environmental Science and Technology for the Eart

Determining the rate constants for the gas-phase reactions of low-volatile compounds with radical using a relative-rate method in CCL4 liquid phase-system

大阪府立大学Promoting Environmental Pesearch in Pan-Japan Sea Area : Young Researchers\u27 Network, Schedule: March 8-10,2006,Kanazawa Excel Hotel Tokyu, Japan, Organized by: Kanazawa University 21st-Century COE Program, Environmental Monitoring and Prediction of Long- & Short- Term Dynamics of Pan-Japan Sea Area ; IICRC(Ishikawa International Cooperation Research Centre), Sponsors : Japan Sea Research ; UNU-IAS(United Nations University Institute of Advanced Studies)+Ishikawa Prefecture Government ; City of Kanazaw

Study on formation processes of nitrated polycyclic aromatic hydrocarbons in the atmosphere

大阪府立大学 /　金沢大学大学院自然科学研究科Promoting Environmental Pesearch in Pan-Japan Sea Area : Young Researchers\u27 Network, Schedule: March 8-10,2006,Kanazawa Excel Hotel Tokyu, Japan, Organized by: Kanazawa University 21st-Century COE Program, Environmental Monitoring and Prediction of Long- & Short- Term Dynamics of Pan-Japan Sea Area ; IICRC(Ishikawa International Cooperation Research Centre), Sponsors : Japan Sea Research ; UNU-IAS(United Nations University Institute of Advanced Studies)+Ishikawa Prefecture Government ; City of Kanazaw

Pollution of Polyaromatic Hydrocarbons in the Airborne Particles in the Developing Countries in Asia Region

Joint Research on Environmental Science and Technology for the Eart

Proceeding of The International Seminar on Chemistry

Abstract Currently, most of the biodiesel is produced from vegetable oils and methanol in the presence of base catalysts using mechanical stirring method at temperature 50-65 o C. This method consumes much energy because oils and methanol must be heated up to desired temperature, and also requires rather long reaction time. Ultrasound-assisted reaction can reduce the reaction time much shorter than mechanical stirring and the reaction can be carried out at room temperature, so energy can be saved. In the pilot scale the trans-esterification was performed by circulation process under low frequency ultrasound (20 kHz) with the input capacity of 1 kW. Effect of various process parameters such as the amount of KOH, molar ratio of oil to methanol and also reaction time were investigated. The optimal conditions for the process were: oil/methanol molar ratio 1:5, the amount of KOH to oil 0.7 % w/w. Under these conditions, conversion of triglycerides to fatty acid methyl esters (FAMEs) was 96.3% within the reaction time 60 minutes . Glycerin, catalyst and excess methanol were separated easily from FAMEs phase. Crude biodiesel was purified by washing with tap water and drying at 65 o C under reduced pressure at 520torr

DISTRIBUTION OF PERSISTENT ORGANIC POLLUTANTS AND POLYCYCLIC AROMATIC HYDROCARBONS IN SEDIMENT SAMPLES OF VIETNAM

Joint Research on Environmental Science and Technology for the Eart