Browsing by Author "Escobar, V"

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    Use of quillaja saponins (Quillaja saponaria Molina) to control acid mist in copper electrowinning processes - Part 1. Laboratory scale evaluation
    (ELSEVIER SCIENCE BV, 2005) San Martin, RM; Otero, AF; Figueroa, M; Escobar, V; Cruz, A
    This work describes the use of extracts of the Chilean quillaja tree (Quillaja saponaria Molina) as alternative low cost surfactants for the control of acid mist in copper electrowinning (EW). Quillaja extracts contain triterpenoid saponins, which are natural surfactants traditionally used as foaming agents in food and beverages. Two commercial products with different degrees of purification were tested: QL 1000 (R) (non-refined product, 8.4% saponin content) and Mistop (R) (refined product, 16% saponin content). Laboratory experiments determined the effects of both products on electrolyte surface tension (ST), solvent extraction process (SX), current efficiency (CE) and cathode quality.