Abstract
We examined recovery of silver ion using fatty acid sodium (Soap) and heat treatment of the formed fatty acid silver (Scum) under the oxygen atmosphere. Fatty acid sodium reacted with the silver ion, and the fatty acid silver was formed in the high yield. The formed fatty acid silver was thermally unstable, and it decomposed by the heating of low temperature of about 130 ℃ under the oxygen atmosphere, and the silver was formed.
The development of the low energy type of recycling system is greatly expected, because the silver can be by far formed in low temperature than the melting point of bulk silver.
