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http://dx.doi.org/10.1016/S1003-6326(15)63980-2

has been cited by the following article:

• TITLE: A Review on Alternative Gold Recovery Re-agents to Cyanide

  AUTHORS: Mertol Gökelma, Alexander Birich, Srecko Stopic, Bernd Friedrich

  KEYWORDS: Hydrometallurgy, Leaching, Cyanide, Alternative Reagents, Recovery

  JOURNAL NAME: Journal of Materials Science and Chemical Engineering, Vol.4 No.8, August 18, 2016

  ABSTRACT: The importance of gold recovery from low grade ores and flotation tailings is continuously increasing due to raising gold demand and thereby high gold prices. However, due to raising social awareness of the ecological impacts of cyanidic gold extraction and environ-mental specifications, the development and the implementation of alternative hydrometallurgical extraction processes have been a focus for many research institutions in last decades. Present work gives a comparison between compatible extraction reagents, with focus on less harmful processes. The target of this review is to point out the best cyanide-free processes of following methods and reagents: Bioleaching, Chlorination, Aqua Regia, Bromine, Thiocyanate, Thiosulfate and Thiourea leaching. For this propose, the gold leaching reagents are described and discussed in terms of their environmental and economical points of view. As result of this comparison, thiourea stands out as the most promising alternative gold leaching reagent to cyanide.