THE INFLUENCE OF SORBENT NORM AND TIME ON THE PROCESS OF PURIFICATION OF PHOSPHORIC ACID FROM CATION OF LEAD (II) BY ACIDOMODIFICATED ZEOLITE FROM SHANKANAY DEPOSIT
Keywords:
heavy metals, lead cations, acid-modified zeolite, sorption, phosphoric acidAbstract
The effect of the norm of the acid-modified zeolite of the Shankanay deposit and the time on its sorption capacity with respect to the Pb (II) cations in 26 and 83% H3PO4 was studied. It was found that in 26 and 83% phosphoric acid, the modified zeolite exhibits a high sorption ability with respect to the Pb2 + cations, with the optimal ratio "acid-modified zeolite: H3PO4" equal to 10: 100. 26% and 83% of H3PO4 acid, respectively, are cleared at 98.94 and 99.60%. It has been established, that the curves of the residual content of Pb2+ cations after purification with 83% H3PO4 in time for all investigated temperatures and CPb are rectilinear and decrease with increasing duration of the process. The highest degree of sorption of Pb (II) by sorbent is achieved in 60 minutes of the process.
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