Reutilization of environmental pollutants in Southeast Asia

东南亚环境污染物的再利用

基本信息

批准号：
07044145
负责人：
MIYAMOTO Kazuhisa
金额：
$ 10.24万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

项目摘要

The objective of this project is to improve the new technology for environmental protection, which is suitable for the developing countries in the Southeast Asia. As Thailand is one of most developing countries in the area, the environmental condition was searched. In addition, the useful biological resources are collected in Thailand. Using these organisms, the technology for treatment of environmental pollutant and reuse of biomass are investigated as follows.Cadmium removal was investigated using the filamentous cyanobacterium, Tolypothrix tenuis, which exhibited a high level of Cd tolerance and had the highest Cd removal ability among 17 cyanobacterial strains obtained in Thailand. T.tenuis showed consistent Cd-adsorption ability over a wide range of temperature and pH.These results suggest that T.tenuis may be applicable to the removal of Cd from surface and ground water in certain outdoor situations.Efficient conversion of CO_2 into organic material was attempted by using a therm … More ophilic algae, Chroococcidiopsis sp.strain TS-821. Condition for dense culture of the strain was determined by changing CO_2 concentration, light intensity and the amount of components. Content of protein, sugar, and lipid in the cells was also measured. Phycocyanin was purified from the washings of freeze-dried cells.Simultaneous removal of phosphorus and nitrogen from wastewater was studied utilizing a flocculated algal mat that had been isolated from a pond. The removal of phosphorus and nitrogen in wastewater was successful in a continuous culture with cell recycle system at a dilution rate of 1.0 d^<-1>. After a 4 week adaptation period, the system arrived in steady state and the removal rates of phosphorus and nitrogen were about 70% and 50%, respectively.To evaluate aquatic environmental pollutions in Bangkok, hepatic Metallothionein (MT) induction was evaluated in several kinds of fresh-water fishes in Chao Phraya river and in canals around the factories. Catfish and sucker in Chao Phraya river and common climbing perch and three spot gourami in canals showed relatively high levels of hepatic MT,indicating some environmental changes to the worse. Less

该项目的目的是改善新技术的环境保护技术，该技术适合东南亚的发展中国家。由于泰国是该地区最大的发展中国家之一，因此搜查了环境状况。此外，在泰国收集了有用的生物资源。使用这些生物体，研究了用于治疗环境污染物和生物质再使用的技术，如下所示。使用丝状蓝细菌，Tolypothrix tenuis进行了降低的去除，该技术暴露了高水平的CD耐受水平，并且在Thailand中获得的17个CD cd菌菌株中的CD去除能力最高。 T.Tenuis在广泛的温度和pH值中表现出一致的CD吸附能力。这些结果表明，在某些室外情况下，T.Tenuis可能适用于从表面和地下水中除去CD。尝试使用Thermo的co_2效率转化为有机材料，使用Thermo…更多的毛细血管藻类，Chroococcidiopsis sps sp.scrain ts-821。菌株致密培养的条件是通过改变CO_2浓度，光强度和成分量来确定的。还测量了细胞中蛋白质，糖和脂质的含量。使用从池塘中分离出来的絮凝藻垫，研究了从冻干细胞的洗涤中纯化植物苷。废水中磷和氮的去除在连续培养中与细胞回收系统的连续培养成功，稀释率为1.0 d^<-1>。经过4周的适应期，该系统以稳定状态到达，磷和氮的去除率分别约为70％和50％。为评估曼谷的水生污染，肝金属氨酸（MT）诱导在Chao phraya和Canters中的几种淡水鱼类中评估了，在Chao river和Cans中的几种淡水鱼类中进行了评估。 Chao Phraya河中的cat鱼和吸盘在运河中的常见攀岩鲈鱼和三个斑点gourami显示出相对较高水平的肝炎MT，这表明较差的环境变化。较少的