SORPTION EXTRACTION OF LEAD(II) USING ACHELATING SORBENT BASED ON MALEICANHYDRIDE-STYRENE

A new sorbent has been synthesized based on a maleic anhydride-styrene copolymer modified with 2-allyl phenol ether.The conditions for the preliminary concentration of Pb(II) using the synthesized sorbent have been investigated.The adsorption isotherm for lead(II) ions with the sorbent has been constructed.It has been established that as the concentration of lead in the solution increases, the amount of adsorbed metal also increases, reaching a maximum at a concentration of 610 mol/L (pH=5, CPb=610 mol/L, adsorption capacity=420 mg/g).The influence of different mineral acids (HClO, HSO, HNO, HCl) at equal concentrations on the desorption of lead(II) from the sorbent has also been studied.Maximum desorption of lead(II) is observed in hydrochloric acid.The degree of extraction of lead(II) ions under optimal conditions exceeds 95%.