A Material Flow Analysis of Phosphorus in Japan

摘要: Summary The demand for biofuels has recently increased because of rising prices fossil fuels and diversification energy resources. As a result, the sugarcane corn been increasing, not only food production, but also as sources energy. In this context, securing supplies phosphorus, required an essential nutrient in agricultural considerable implications that extend beyond policy. It is therefore important to consider quantity availability phosphorus resources remain untapped, supply phosphate ore currently becoming very tight, Japan no domestic resources. To identify potential resources, we have investigated material flow within Japan, including iron steel industry, on basis statistical data 2002. Our major finding steelmaking slag almost equivalent imported terms both amount concentration. We found, by means waste input–output analysis total materials requirement study, potentially recoverable from new process proposed environmental economic benefits. Concerning restricted resource, it untapped. From viewpoint, would be expected great resource phosphorus.