Teaching Materials for Environmental Education-Water Circulation System and Clarification Power in Nature-
Grant-in-Aid for Scientific Research (C)
|Research Institution||KUMAMOTO UNIVERSITY|
SATO Shigeya KUMAMOTO UNIVERSITY,FACULTY OF EDUCATION,ASSISTANT PROFESSOR, 教育学部, 助教授 (60109626)
|Project Fiscal Year
1995 – 1996
Completed(Fiscal Year 1996)
|Budget Amount *help
¥1,900,000 (Direct Cost : ¥1,900,000)
Fiscal Year 1996 : ¥400,000 (Direct Cost : ¥400,000)
Fiscal Year 1995 : ¥1,500,000 (Direct Cost : ¥1,500,000)
|Keywords||Environmental Education / Water pollution / Surfactant / Air pollution / Clarification power / Aquatic weeds / Biodegradation / Acid rain / 環境教育 / 水質分析 / 酸性雨 / 大気汚染 / 水生植物 / 浄化作用 / 緩衝作用 / 生分解 / チッ素酸化物 / 自然の浄化 / 緩衝能 / 微生物分解 / ホテイアオイ / 自浄作用|
As one of the teaching materials for environmental education, both developments of simple determination methods for environmental pollution matters and several kinds of interesting clarification powers in nature have been widely investigated and applied to teachings in compulsory education.
It was found that river water could be easily biodegraded of most surfactants that were the main constituents of domestic waste water. Moreover, sediments or sandy soils in rivers have been found to be effective for both diodegradation and adsorption of surfactants. On the other hand, it was clarified the soil availability (the buffer action and adsorption power).
The metal elution in acidic solution and the influence of metal eluted for the growth of aquatic weeds have been examined. The metals examined are Cu Fe Al and Zn, which are utilized as coin, can and dry cell. The increase in acidity causes a large a mounts of metal elution and has a negative effect on the growth of aquatic weeds. In particular both Cu and Zn give remarkable hindrance. On the other hand, the water hyacinth, a kind of aquatic weed, absorbs some harmful metals and is available for clarification of river water.
The improved determination method for nitrogen dioxide was applied to the measurement of the air pollution condition in Kumamoto prefecture. It was found that the amounts of nitrogen dioxise and weather considerable correlated to each other, and nitrogen dioxide could be removed from air with a leaf of plant.
Finally, it was found that the nature thought of many clever tricks to protect themselves against the pollution.
Research Output (4results)