权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development of Total Utilization Method of Woody Waste by Green Technology

绿色技术开发木本废弃物综合利用方法

基本信息

批准号：
15360483
负责人：
NAKAMURA Yoshitoshi
金额：
$ 9.92万
依托单位：
Kanazawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

项目摘要

Woody biomass is renewable resources that can be converted into useful materials and energy. The amount of carbon contained in woody waste annually occurred and emitted into environment in Japan is about 30-40% of carbon consumed to produce a variety of petrochemicals from oil. The development of industrial technique for converting a raw material into useful materials and products completely without generating pollutants such as waste gas, wastewater, and solid waste materials is expected significantly for the global environmental protection on the base of zero emission. The holocellulose, i.e. cellulose and hemicellulose, in woody waste such as wood chips, baggase, bamboo, bark, and sweet sorghum are natural organic resources utilizable for the production of sugars. However, the holocellulose are with difficulty converted into sugars by direct biological means in a native state because a lignin network covers the holocellulose layers in the cell walls. Various different physical, chem … More ical and biological pretreat-ments have been attempted to degrade the lignin in the biomass or to remove it from the holocellulose surface. In recent years, a steam explosion that consists of steam hydrolysis with a high temperature and pressure and a mechanical treatment of the hydrolyzed product with a sudden reduction of the pressure, has been attractive as an effective pretreatment for depolymelizing the lignin in woody biomass. In this work, the treatment and conversion system of plant biomass waste into useful materials was developed for zero emissions by using steam explosion and various conversion methods. This system was a significant conversion approach without generating pollutants, i.e. waste gas, wastewater, and solid waste materials. The conversion of woody wastes into useful materials was studied for the effective utilization of its components such as holocellulose, water-soluble material, methanol-soluble lignin, and Klason lignin. The holocellulose, water-soluble material, methanol-soluble lignin, and Klason lignin were converted into useful materials, i.e. lactic acid or antibacterial violet pigment and methane gas, monosaccharides and oligosaccharides, epoxy resin without an estrogenic activity, and activated carbon, respectively. The amounts of useful materials and products produced from each component were estimated, and the reduction of pollutants generated in their production process and waste treatment, and the detoxification of the lignin resin were confirmed. Less

木质生物质是一种可再生资源，可以转化为有用的材料和能源。在日本，每年产生并排放到环境中的木质废弃物中所含的碳量约为从石油生产各种石油化学品所消耗的碳的30-40%。开发将原材料完全转化为有用材料和产品而不产生污染物如废气、废水和固体废料的工业技术，对于基于零排放的全球环境保护具有重大意义。木质废弃物如木屑、蔗渣、竹子、树皮和甜高粱中的全纤维素，即纤维素和半纤维素，是可用于生产糖的天然有机资源。然而，由于木质素网络覆盖细胞壁中的综纤维素层，综纤维素难以通过直接生物手段在天然状态下转化为糖。各种不同的物理，化学 ...更多信息已经尝试了化学和生物预处理来降解生物质中的木质素或将其从全纤维素表面除去。近年来，由高温高压蒸汽水解和突然减压机械处理水解产物组成的蒸汽爆破作为木质生物质中木质素解聚的有效预处理已经受到关注。在这项工作中，植物生物质废物的处理和转化系统开发为有用的材料，零排放，通过使用蒸汽爆炸和各种转化方法。该系统是一种重要的转化方法，不会产生污染物，即废气，废水和固体废料。为了有效利用木质废弃物中的综纤维素、水溶性物质、醇溶性木质素和克拉森木质素等成分，对木质废弃物的资源化进行了研究。将综纤维素、水溶性材料、甲醇溶性木质素和Klason木质素分别转化为有用的材料，即乳酸或抗菌紫色颜料和甲烷气体、单糖和寡糖、无雌激素活性的环氧树脂和活性炭。估算了从每种组分产生的有用材料和产品的量，并确认了其生产过程和废物处理中产生的污染物的减少以及木质素树脂的解毒。少