Štefica Cerjan-Stefanović

TL;DR: In this article, the lead and cadmium removal from wastewaters by natural and pretreatment zeolites was examined by using a batch-type method, and the results demonstrated that the natural zeolite contained a complement of exchangeable Na, K and Ca ions but exposing them to 2 M NaCl solution at 22 and 70°C, respectively, converted them to a near homoionic state in Na-form.

TL;DR: In this paper, the removal of nitrogen in the form of ammonium ions (N-NH+4) from aqueous solutions using natural clay and zeolite was investigated.

TL;DR: The metal concentration, anions, pH value and conductivity in water eluates was determined in order to define the influence of EAF dust on the environment.

TL;DR: Data from this study indicated the potential use of the tested electric furnace slag, a by-product from "Felis" foundry in Sisak, Croatia, as Pb2+ and Cu2+ sorbents from the industrial effluents.

TL;DR: In this paper, the influence of 2% HNO 3 on LEWATIT S 4428 ion exchange resins was examined under laboratory conditions, and four types of anion resins were used under industrial conditions.