1. THE RECOVERY OF THE ZINC AND NICKEL IONS BY IONIC EXCHANGE FROM ELECTROPLATING WASTEWATERS. Authors: IGOR CREŢESCU, GABRIELA ŞOREANU, MARIA PETRUC, GABRIELA CÂRJE, MATEI MACOVEANU.2. EQUILIBRIUM AND KINETIC STUDIES OF IRON (II) REMOVAL FROM 34% CALCIUM CHLORIDE SOLUTIONS BY CHELATING RESIN PUROLITE S930. Authors: MATEI MACOVEANU, PETRU BULAI, CAMELIA POPA.