PURIFYING NICKEL SULFATE SOLUTIONS BY ION EXCHANGE
GAVRILĂ LUCIAN*, ISTRATI LĂCRĂMIOARA*, CONSTANTIN MARIA-MAGDALENA*, SIMION ANDREI*, IVASCAN ŞTEFAN**
*UNIVERSITY OF BACĂU, DEPOLLUTION ENGINEERING LABORATORY, CALEA MARASESTI 157, RO 5500 BACĂU, ROMANIA, E-MAIL: LGAVRILA@UB.RO **TECHNICAL UNIVERSITY “GH. ASACHI” IAŞI, FACULTY OF INDUSTRIAL CHEMISTRY, BD. MANGERON 71, RO-6600 IAŞI, ROMANIA
Abstract
The paper presents the possibilities of purifying nickel sulfate solutions resulted at the acid leaching of spent steam reforming catalysts, in order to obtain electroplating grade NiSO4. The role of chelating ion exchange resins in the retention of aluminum, iron, calcium and magnesium is emphasized. A flow sheet for manufacturing purified nickel sulfate solutions is established.