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Mechanism Of Dissolution Of High Valence Lead Oxides In Water Under Depleting Chlorine Conditions, Daoping Guo

Electronic Thesis and Dissertation Repository

Destabilization of lead corrosion scales present in plumbing materials used in water distribution systems results in elevated lead concentrations in drinking water. Lead release caused by changes in water chemistry (e.g., redox conditions) is often due to the destabilization of lead carbonate and oxide solid phases. Although prior studies have examined the effects of varying water chemistry on the stability of β-PbO₂ (plattnerite), β-PbO₂ stability under depleting chlorine conditions is poorly understood. In addition little is known regarding the mechanisms by which Pb₃O₄ (minium) dissolves under drinking water conditions. In this thesis, long-term batch dissolution …