SATO TATSUAKI,MIYAMOTO MASAYA,TOYOHARA NAOMI,OKAMOTO MASARU,TAKAMATSU YOSHINARI
申请号：
JP19990323284
公开号：
JP2000245278(A)
申请日:
1999.11.12
申请国别(地区):
日本
年份:
2000
代理人:
摘要：
PROBLEM TO BE SOLVED: To provide a method for mass-producing a culture medium for algae serviceable for solving global environmental problems by culturing a large amount of the algae in the ocean or lakes and marshes, absorbing gaseous carbon dioxide, obtaining a raw material for energy sources from the cultured algae, etc. SOLUTION: A mixture prepared by mixing a raw material containing an industrial waste such as coal ash or an incinerated ash with an inorganic material such as sand, a pulverized shell material or a diatom, a hardening material and a culturing nutrient for algae is molded into a molded product and cured to thereby mass-produce a culture medium for algae capable of floating on water. A cement, water glass, lime, a gypsum, etc., and the culturing nutrient for the algae such as a phosphoric acid compound can be used as the hardening material. A phosphorus component, a nitrogen component and an iron component can be used as the culturing nutrient. The mixture is extrusion molded and molded into a cylindrical form and both ends are closed to thereby make the interior thereof hollow. The apparent specific gravity is reduced to thereby make the molded product floatable on water. The specific gravity of the molded product can be reduced by using a material for reducing the weight. A compression molding method, a method for disintegrating a premolded product after premolding or an agitation molding method can be used. Waste heat of a power generation plant or an incineration furnace can be used as a waste for curing the molded product.
