Catalytic Photodecomposition of Ferrocyanide
DOI:
https://doi.org/10.36790/epistemus.v18i36.328Keywords:
Ferrocyanide, Sunlight, Decomposition, Catalyst, Oxidizing agentsAbstract
In the hydrometallurgical processes, cyanide is one of the most widely used compounds in gold extraction; however, the main problem is the generation of wastewater containing this compound and its derivatives, including cyanide-iron compounds, or better known as ferrocyanide. For the decomposition of this type of compounds there are techniques known as advanced oxidation processes, based on the formation of hydroxyl radicals. The present work focuses on the decomposition of ferrocyanide with advanced oxidation processes with solar radiation as the main agent and the use of a catalyst. Experimental tests were carried out with a synthetic solution of ferrocyanide (500 ppm) under controlled laboratory conditions. The results showed that a 62% recovery of iron in the form of precipitates was obtained in a period of one hour, while with a catalyst it reached 79%.
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