Abstract
Recently, biological techniques have been reported on the recovery and accumulation of gold from solutions containing auric complex ions. The Galvanic cell used aqueous and juicy solution of spinach leaves, a biological electric cell, was made out. In this preliminary report, the accumulation of gold by bacteria was recognized in a part of the experimental systems in which auric complex ions were gradually added into the spinach solutions. Pseudomonas putida was predominantly identified in a sample accumulating gold.
