Studies Regarding the Obtaining Process of Iron (II) -Ammonium Phosphate from Residual Solutions

摘要

This paper presents the extraction of iron ions from waste, and their revaluation in mineral fertilizer, as iron[II)-ammonium phosphate. In order to obtain the iron(II) -ammonium phosphate, we used waste solutions, resulted from galvanic industry. To obtain the iron(II)-ammonium phosphate, we used diammonia phosphate and ammonia solution 25%. We studied the separation degree of iron depending on the variation of the pH of the reaction mass according to the added volume of ammonia solution, and temperature. After the analysis of the obtained products, we determined the optimum conditions of the obtaining process of iron(II)-ammonium phosphates, who determined a maximum separation degree of iron from solution. The phosphate was characterized by FTIR and X-ray powder diffraction analysis.