1. PARTICULATE BED CATHODE FOR COPPER ION REMOVAL FROM WASTE WATERS. Authors: ANCA MIHAELA MIHAI, LIVIU ONICIU.2. PARTICULATE BED CATHODE FOR COPPER ION REMOVAL FROM WASTEWATERS. PART II: A CORRELATION BETWEEN COPPER RECOVERY, CURRENT EFFICIENCY AND ENERGY CONSUMPTION. Authors: ANCA MIHAELA MIHAI, LIVIU ONICIU.