Use of bagasse
Bagasse is a kind of waste, so what is its use?
1. Production of Fuel Alcohol In the 1970s, bagasse in China's sugar factories was mainly burned or discarded by the sugar factories themselves as fuel, which had low economic value. Cellulose in bagasse can be converted into sugar and made into alcohol or feed yeast. Brazil's technology of producing alcohol from bagasse, which was developed in 1980s, is in a leading position in the world and has registered patents in many countries. By using the new technology, 65,438+000 liters of alcohol can be extracted per ton of bagasse, which can increase the alcohol production of sugarcane from 7,740 liters to 65,438+03,800 liters without expanding the planting area of sugarcane (65,438+000 liters in 2003/2004).
2. Bagasse as feed
Over the years, many scholars at home and abroad have devoted themselves to the development and research of sugar mill by-products as feed, and have achieved certain results. For example, an animal husbandry research institute in the United States invented a method of ammonifying bagasse and processing it into high-protein feed. The specific method is: mixing bagasse with urea or amine (aqueous solution of 100: 2), fully soaking bagasse, cooking in a heating pot at the pressure of 14kg for 2 hours, mixing and fermenting with yeast when the temperature drops to about 25℃ after taking out the pot, exhausting the gas generated after fermentation, and drying and grinding bagasse into fine powder, which can be used as feed.
Three, bagasse used as environmental protection materials:
1. Paper-making: At present, there are mature technologies to use bagasse as a substitute raw material for wood to produce paper cup base paper, fully degradable paper agricultural plastic film and paper tableware. Among them, the fully degradable paper agricultural mulching film is made of 100% bagasse pulp, which can be recycled and degraded naturally, and can solve the problem of white pollution caused by the use of polystyrene tableware for many years, and is considered as the most promising new achievement; The food and beverage made of bagasse has high whiteness, good compactness, good temperature and oil resistance, non-toxic and tasteless, can be completely degraded within three months, and there is no pollution of three wastes in the production process, and the production cost is much lower than that of the paper pulp molded snack box. For example, in mashan county Shuangfei Green Tableware Factory, this kind of green tableware made of bagasse has appeared, creating excellent conditions for the development of emerging environmental protection industries.
2. Bagasse is a kind of high-density composite material, and its chemical composition is similar to that of wood, so it is a good raw material for board making. Production of high density composites from bagasse resources. Due to the small specific gravity of bagasse and good fiber quality, the prepared board is high in strength and light in weight, and the produced board and profile are free from biological invasion, low in water absorption and free from seawater corrosion; Good fireproof performance, good flame retardant performance, good processability and decoration, and is suitable for furniture, buildings, carriages, ships, packing boxes and other manufacturing industries. The product has strong plasticity. By changing different molds or templates, various plates and profiles can be directly produced, which has great market value. The realization of high-density composite technology not only solves the pollution and discharge problems of agricultural wastes and municipal garbage, but also saves limited forestry resources, which will definitely have a great impact on China's environmental protection industry in 2 1 century.