Innocenzi V1, Ippolito NM2, De Michelis I1, Medici F3, Vegliò F1.
J Environ Manage. 2016 Dec 15;184(Pt 3):552-559. doi: 10.1016/j.jenvman.2016.10.026. Epub 2016 Oct 24.Terbium and rare earths recovery from fluorescent powders of exhausted lamps by acid leaching with hydrochloric acid was the objective of this study. In order to investigate the factors affecting leaching a series of experiments was performed in according to a full factorial plan with four variables and two levels (42). The factors studied were temperature, concentration of acid, pulp density and leaching time. Read More