Bagasse is a kind of waste, so what are its uses?
Production of Fuel Alcohol in the 1970s, sugarcane bagasse from sugar mills in China was mainly used as fuel for sugar mills to burn or waste, which had very low economic value. The cellulose in bagasse can be converted into sugar to make alcohol or feed yeast. The technology developed by Brazil in the 1980s to produce alcohol from bagasse occupies a leading position in the world, and patents have been registered in many countries. By using the new technology, 100 liters of alcohol can be extracted from bagasse per ton, increasing the alcohol yield of sugarcane from 7,740 liters to 13,800 liters. Ethanol production (14.8 billion litres in 2003/2004) could be doubled and costs reduced by 40 per cent without expanding sugarcane acreage.
2. Bagasse as feed
For many years, many scholars at home and abroad have devoted themselves to the development and research of sugar plant by-products as feed, and have made certain achievements. For example, an Animal husbandry institute in the United States invented a method to process bagasse into high-protein feed after ammonification. Particular way is: bagasse with urea or amine compound aqueous solution (100:2) mix, bagasse to saturated, under the pressure of 14 kg to heat the pan to cooking for 2 hours, after the pot when cooled to 25 ℃ or so stir in yeast fermentation, the fermentation after its gas emissions from the clean, and dry bagasse, ground into a fine powder can be used as feed.
3. Bagasse used as environmentally friendly material:
1. Paper making: at present, there is a mature technology to produce paper cup base paper, fully degraded paper agricultural mulching film and paper catering utensils using bagasse as an alternative raw material for wood. Fully degradable paper mulching film for agricultural use is made of 100% bagasse pulp, which can be recycled for papermaking and degraded naturally. It can solve the problem of white pollution caused by the use of POLYstyrene tabletop for many years, which is considered as the most promising new achievement. Made from bagasse food with high whiteness and tightness, good oil resistance of heat-resistant, non-toxic, tasteless, three months can be completely degradation, no "three wastes" pollution production process, and the production cost is much lower than molded pulp snack box, such as green tableware factory, mashan county in guangxi has been this kind of green tableware using bagasse as raw materials, It has created excellent conditions for the development of emerging environmental protection industry.
2. The chemical composition of sugarcane bagasse is similar to that of wood, which is a good raw material for making board. Production of high density composite materials using bagasse resources. Because of the small proportion of bagasse and the good quality of fiber, the plank made has high strength and light weight, and the plank and profile produced are not harmed by organisms, low water absorption rate and corrosion from sea water. Good fire performance, good flame retardant performance, good mechanical processing performance and decorative performance, suitable for furniture, construction, carriage, ship, packing boxes and other production industries. Products have strong plasticity, replace different mold or template, directly produce a variety of plates and profiles, has a great market value. The realization of high density composite material technology not only solves the pollution discharge problem of agricultural waste and urban waste, but also saves limited forestry resources, which will have a great impact on China's environmental protection industry in the 21st century.
