Experimental Investigations Modelling and Optimization of Reactive Precipitation for Recovering Ammonium Perchlorate from Reject Brine

Abstract

Ammonium Perchlorate (AP) manufacturing process generates a reject brine with high newlinesalinity of 20-25% and 7-8 % of perchlorates by weight. Among all the technologies newlinedeveloped globally, the reactive precipitation is the most promising one for recovering newlinehigher percentage of AP from reject brine. Reject brine is transformed into two newlinematerials viz. an admixture of AP with ammonium chloride and sodium bicarbonate newlineusing Reactive Precipitation. In pursuit of demonstrating the technology in higher newlinescale, the complex dependency of process or operating parameters on reactive newlineprecipitation have to be addressed. newlineExperimental trials were conducted at 0.3 kL/batch capacity for optimization of newlinereactive precipitation. Since the operating conditions play a crucial role on the kinetics newlineof reactive precipitation, taguchi design and statistical ANOVA were applied to newlineestimate significant operating conditions and their contributions to process newlineperformances. The study reveals the potential impact of mixing, impeller configuration, newlineand temperature on the process efficiency. newline