Photocatalytic Performance of Functionalized Biopolymer for Neodymium (III) Sorption and the Recovery from Leachate Solution

Successive grafting of new sorbent bearing amino phosphonic groups based on chitosan nano magnetite particles was performed through successive coupling with formaldehyde. The produced composite characterized by the high sorption capacity toward rare earth elements (REEs) and consists different types functional (phosphonic, hydroxyls amine groups) that are used for enhancing properties. chemical modification mechanism were investigated analytical tools; i.e., FTIR, SEM, SEM-EDX, TGA, BET (surface area) pHpzc. Nd(III) as one REE(III) members under ultraviolet (UV) visible light (VL) conditions. optimum found at pH0 4 recorded 0.871 0.779 mmol Nd g?1 UV VL respectively. Sorption isotherms uptake kinetics fitted Langmuir Sips pseudo-first order rate equation (PFORE) functionalized sorbent, showed a relatively high-speed kinetic (20 min). bounded metal ions progressively eluted using 0.2 M HCl solution desorption 10–15 min, while loss in total after series recycling (sorption/desorption) (five cycles) limited (around 3%) 100% efficiency, indicating stability an acidic medium. recovery REEs from leach liquor residue pretreatment extraction particular elements. From these results (high loading capacity, selectivity against acid treatments), we can see is promising tool selective field valorization.