Characterization, Dissolution and Solubility of Mimetite[Pb5(AsO4)3Cl] at 25°C

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

doi:10.4028/www.scientific.net/AMM.448-453.15

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

Characterization, Dissolution and Solubility of Mimetite[Pb₅(AsO₄)₃Cl] at 25°C

Abstract:

Mimetite [Pb₅(AsO₄)₃C was firstly synthesized by precipitation and characterized by various techniques, and then the batch dissolution experiment was conducted at 25°C and different initial pHs. XRD and SEM analysis indicated that the solid was indistinguishable before and after the dissolution. For the dissolution at the initial pH=2, the aqueous arsenate and lead concentration decreased firstly with time and reached a steady state after 480h. For the dissolution at the initial pH=4 and 6, the aqueous arsenate and lead concentrations varied between 0-0.0005mmol/L and 0-0.0008mmol/L, respectively.