Characterization, Dissolution and Solubility of Pyromorphite [Pb5(PO4)3Cl] at 25°C

Liu Qin Dai; Zong Qiang Zhu; Zong Lan Zhang; Yi Nian Zhu; Liang Liang Tan; Yan Hua Huang; Cai Chun Wei

doi:10.4028/www.scientific.net/AMM.448-453.11

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 448-453Characterization, Dissolution and Solubility of...

Characterization, Dissolution and Solubility of Pyromorphite [Pb₅(PO₄)₃Cl] at 25°C

Abstract:

Pyromorphite was synthesized by precipitation and characterized by various techniques. The batch dissolution experiment was conducted at 25°C and different initial pHs (2, 4 and 6). The solid phase showed no obvious change before and after dissolution. The aqueous phosphate concentration decreased quickly from 0.22 to 0.01mmol/L and then increased very slowly with time. After 2160h dissolution, it reached a steady-state value of about 0.13mmol/L. The aqueous lead concentration increased initially and reached a peak value after 72h dissolution.