INFLUENCE OF CYANIDE ON REMOVAL OF COPPER ION FROM THE SOLUTION BY PHOTOCATALYTIC REDUCTION METHOD WITH TiO2 SUSPENSION - Wahyuni, Endang Tri; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara POB.Bls. 21 Yogyakarta 55281 (Universitas Gadjah Mada, 2010)