Fuel from bagasseUpdate: 8/7/2013
Fuel from bagasse
(BGDT)-Use of cellulose to biofuels production not only enhance the value of the agricultural production process, but also contribute to environmental protection. According to many experts, out of straw, wood ... are considered common materials, the choice of a new bagasse is used to produce biofuels, in accordance with Vietnam agriculture.
For the first time in Vietnam, Huynh Quyen and colleagues at the Research Center for Petrochemical Technology (Polytechnic University of Ho Chi Minh City) has succeeded in developing process technology butanol synthetic fuels from bagasse in the laboratory. This is considered as a basis to take advantage of a large amount of waste bagasse from sugar mills in Vietnam today.
Dr. Huynh Quyen, in the kind of alcohol they biofuel, butanol is considered one of the fuels with the highest value. Specifically, compared with ethanol, butanol calorific value (heat generated by burning solid fuels entirely 1kg) 1.5 times higher. Besides, butanol index RON, MON high, low consumption of oxygen when burned. If used as a gasoline additive phase will increase the octane, improves combustion and fuel use.
The researchers found the method most effective synthetic butanol, at least energy and avoid pollution. Anaerobic fermentation method gives better results. In particular, the preprocessing stage of raw materials used by the steam explosion method the scientists from the Polytechnic University of Ho Chi Minh City to host research and technology, to increase the amount of cellulose.
The composition analysis of bagasse fiber after steam explosion research team also carefully considered, in order to identify and remove unnecessary components in the input source. Since then helped create butanol process standards. "The results were then achieved beyond expectations. Cellulose content increased from 50% to 68% after steam explosion. Butanol amount obtained after the process is also quite high, 6.3 liters of butanol chat/100 kg raw material Initial bagasse. Fully meet the requirements that we set out from the beginning of the research process is 3-6 liters butanol/100 kg raw material, "said Quyen Huynh.
User studies are consistent with the situation of agricultural production in Vietnam, especially the disposal of bagasse quite large. For example at Bourbon Street Factory (Tay Ninh), with a processing capacity of 8,000 tons cane / day, the plant emitted about 2,800 tons of bagasse / day. Meanwhile, Bien Hoa Sugar Company (Dong Nai) has three factories, two factories which use sugar cane as raw material with a total capacity of 5,000 tons cane / day. Each year, sugarcane production is 600000-750000 tons, equivalent 174000-217500 tons of bagasse (sugarcane bagasse accounts for about 29% of sugar cane).
The scientific evaluation of the results achieved are satisfactory, but the process is still flawed, should continue to improve. In particular, the team needs to continue to find ways to improve the percentage recovery of fibers, especially cellulose and then make use of the steam explosion to enhance economic performance during this period. In addition to butanol fuel obtained with low cost manufacturing processes also need the ability to calculate energy consumption ...
According to Pham Hong Duong, Director of Plant Bourbon Street, one carrying burning bagasse generated electricity for the operation of the plant, the rest remain unused. If the total is more than 40 sugar mills in the country, the use of bagasse entire disposal will help reduce pressure on the source of biofuels from corn, tapioca ...
Currently, Vietnam has started implementing the project "Development of biofuels by 2015, with a vision to 2025". Under this scheme, during the period 2011 - 2015, Vietnam will build and develop the production facilities and use of biofuels in the country. By 2025, production of ethanol and vegetable oil will reach 250,000 tons, enough to mix 5 million tonnes of petrol E5, B5, 1% oil to meet the country ... "But the question is how to achieve but that number does not affect food, food. therefore, waste materials, particularly bagasse will contribute both to ensure medium build sustainable agriculture, has solved many needs biological materials, "stresses Dr. Huynh Quyen.
According to Linda Walls - (SGGP)