Solvent extraction of lanthanum and cerium ions from hydrochloric acidic aqueous solutions using partly saponified 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester

Synthesis of a New Phosphonate-Based Sorbent and Characterization of Its Interactions with Lanthanum (III) and Terbium (III)

“…Solvent extraction is a standard process currently employed for the removal of REEs from acidic leachates [ 18 , 19 , 20 , 21 ], especially for solutions containing high metal concentrations. Most of these highly efficient extractants are based on phosphorus reagents such as alkyl phosphate [ 19 , 22 , 23 , 24 , 25 , 26 ], alkyl phosphoric acid [ 27 , 28 , 29 ], alkyl phosphine oxide [ 30 , 31 ], phosphonium ionic liquids [ 32 , 33 ] and organophosphonic extractants [ 34 , 35 , 36 , 37 ]. The strong affinity of phosphorus-based extractants for rare earth easily explains that a strong effort has been made for designing synthetic resins bearing phosphorus-based reactive groups such as Tulsion CH-96 and T-PAR resins [ 38 , 39 ], Tulsion CH-93 [ 34 ], Purolite S957 and Diphonix [ 40 ] or metal-organic frameworks [ 41 ].…”

Synthesis of polyaminophosphonic acid-functionalized poly(glycidyl methacrylate) for the efficient sorption of La(III) and Y(III)

“…The α-aminophosphonate-based compounds are among the most useful organophosphorus derivatives; they have attracted increasing attention because of their biological properties and potential applications in pharmacological and agrochemical fields [20,21]. These organophosphorus compounds and their derivatives are also known as good metal-complexing agents for various transition metals in diagnostic and therapeutic applications [22], but also as industrial chemicals in water treatment, metal extraction, or pollution control [23][24][25], by analogy with synthetic resins [26] and liquid/liquid extractants [27][28][29]. Recently, the affinity of phosphate groups for uranium has been used for elaborating an inorganic/organic composite (based on the simple and readily encapsulation of microparticles of a mineral rock with chitosan) [30].…”

Integrated treatment of tailing material for the selective recovery of uranium, rare earth elements and heavy metals

“…processes are also commonly applied for the recovery of metals from concentrated effluents (Abreu and Morais, 2014;Agrawal et al, 2000;Hou et al, 2016;Matsumiya et al, 2014;Quinn et al, 2013;Xie et al, 2014;Zhu et al, 2016). However, these expensive and hazardous reagents may have non-negligible environmental effect due to partial dissolving in the effluent and contamination of receiving water bodies.…”