Environmental Engineering Reference
In-Depth Information
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Fig. 9.1
Phosphorus flow within Japan. (Matsubae,
2011
)
Table 9.1
Estimated Phosphorus flow relating chemical products in 2005 (ver.20130330)
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the steel industry as a mineral resource, most of which is condensed in steelmaking
slag. The remaining phosphorus (approximately 45.4 kt) is used in industrial chemi-
cal products (excluding fertilizers), accounting for 7.4 % of the total phosphorus
input. The use and amount of phosphorus in chemical industrial products varies.
There exist no clear data on how much phosphorus is present in various products of
the chemical industry.
Further, it is important to clarify the flow of recycled phosphorus compounds;
thus, we estimated the use of phosphorus in chemical products, as shown in
Table
9.1
, based on a market survey and interview data.
