活動報告
Studying of Bio-ethanol application in Thailand -Investigation of environmental pollution by Bio-ethanol production plant-
Genki Muto
1st grade of Master Program, Department of Applied Chemistry, Tokyo University of Agriculture and Technology
Destination and period: Kasetsart University Thailand, 4th-12th, Aug., 2012
Abstract:
In Japan, there are 255 million ton/year biomasses but they aren’t made effective use. On the other hand, much
Bio-ethanol are made from biomasses like a sugar cane and so on, and utilized as a gasoline in Thailand. So,
I learned Bio-ethanol application system that relationship among government, engineers and farmers in Thailand
because of widespread Bio-ethanol in Japan. Then, chemical plants generally emit wastewater. Investigate of how
to treat a wastewater, and wastewater treatments don’t effect environmental pollution.
Bio-ethanol application system has two key points. First, cut down the tax stimulates a demand of gasohol which
is gasoline includes bio-ethanol, and biomass price increase. Second, engineers and farmers make a win-win
relationship.
I surveyed MITR PHOL Bio Fuel Company’s Bio-ethanol plant at Suphan-Buri in Thailand to learn wastewater
treatments. This plant used wastewater which was emitted from distillation as a fertilizer they called “Viness”.
Nitrogen concentration of Viness was 4700 mg-N/ml. It was 3.7 times higher than general liquid fertilizers. And
adsorbed nitrogen concentration of a soil at sugar cane field was 8.2 mg-N/kg-soil. This data indicated water
pollution of nitrogen salts at sugar cane fields, but this data weren’t enough to evaluate environmental pollution.
We need to know viness application rate into sugar cane field and investigate water near sugar cane field or
leaching solution.
Key words: Bio-ethanol, Sugar cane, Water pollution, Liquid fertilizer