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

木质生物质是可再生资源，可以转换为有用的材料和能源。每年发生的木质废物中含有的碳量发生并在日本发射到环境中，约占碳消耗的30-40％，用于从石油中生产各种石化物。在不产生污染物（例如废气，废水和固体废料）的情况下，将原材料转化为有用的材料和产品的工业技术的开发非常明显，这对于零排放基础的全球环境保护非常明显。全纤维素，即纤维素和半纤维素，在木碎片，袋子，袋中，竹子，树皮和甜高粱等木材废料中是可用于生产糖的天然有机资源。然而，全纤维素是通过在本地状态的直接生物学方法转化为糖的，因为木质素网络覆盖了细胞壁中的全纤维素层。各种不同的物理，化学……已经尝试将生物量中的木质素降解或从全纤维素表面删除。近年来，由高温和压力的蒸汽水解组成的蒸汽爆炸，以及对水解产物的机械处理，并突然降低了压力，这是一种有效的预处理，可在木质生物量中解散木质素。在这项工作中，通过使用蒸汽爆炸和各种转化方法开发了植物生物量废物将植物生物量废物的处理和转化系统用于零排放。该系统是一种重要的转化方法，而没有产生污染物，即废气，废水和固体废料。研究了将木本废物转化为有用的材料，以有效利用其成分，例如全纤维素，水溶性材料，甲基溶解木质素和克拉森木质素。全纤维素，水溶性材料，甲醇 - 溶木蛋白和klason木质素被转化为有用的材料，即乳酸或抗菌紫色色素和甲烷气体，单糖和单糖类和寡糖，分别没有雌激素活性和激活碳。估计了从每个组件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，并确认了木质素树脂的排毒。较少的