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Showing 1 to 8 of 8 for “"hydrocerussite"”.
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Influence of Water Chemistry Parameters on the Dissolution Rate of the Lead (II) Carbonate Hydrocerussite
… kinetic dissolution of the lead (II) carbonate hydrocerussite (Pb3(CO3)2(OH)2) under four pH conditions (7.5, 8, 9, 10), three dissolved inorganic concentrations (DIC; 10, 20, 50 mg C/L), and three initial hydrocerussite concentrations (10, 20, 50 mg/L) in batch experiments. Experiments were …
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The Effect Of Free Chlorine And Chloramines On Lead Release In A Distribution System
… presence of free chlorine and Pb3(CO3)2(OH)2(s) (hydrocerussite) was the controlling solid phase in the presence of chloramines at the lower ORP, which mechanistically accounted for the observed release of total lead as PbO2 is much less soluble than hydrocerussite. The lack of differences in …
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A Thesis on the Interactions between Lead Pipe Scales and Dissolved Silica from the Addition of Sodium Silicate as a Corrosion Inhibitor
… scales removed from lead service lines and by hydrocerussite, which is one of the dominant lead-containing solids found in such scales. The study used batch experiments with these solid phases at environmentally relevant water chemistry conditions. Statistic models were built for different …
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Dissolution, Transport, and Fate of Lead on Shooting Ranges
… X-ray diffraction analysis identified hydrocerussite (Pb₃(CO₃)₂(OH)₂) as the corrosion phase present on lead shot recovered from the range. Hydrocerussite dissolution can produce soluble lead concentrations ranging from 2 ppb to 2 ppm for the soil pH values at this site. This soluble …
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Lead silicate solubility and the control of lead contamination in drinking water
… lead to the formation of lead hydroxycarbonate (hydrocerussite) because this carbonate phase is more stable in the pH range of natural waters (pH 5-8) than lead silicate.
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Redox Reactions Influencing Lead Concentrations in Drinking Water: Formation and Dissolution of Lead(IV) Oxide and Impact of Galvanic Corrosion
… solids formed, scrutinyite formed from hydrocerussite, and mixtures of scrutinyite and plattnerite formed from lead(II) chloride and massicot.</p><p>The dissolution rates of PbO2 were quantified at various pH values and concentrations of DIC, free chlorine, and iodide using continuously …
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Dissolution, Formation, and Transformation of the Lead Corrosion Product PbO<sub>2</sub>: Rates and Mechanisms of Reactions that Control Lead Release in Drinking Water Distribution Systems
… water conditions contained PbO<sub>2</sub> and hydrocerussite: Pb<sub>2</sub>(CO3)<sub>2</sub>(OH)<sub>2</sub>). In experiments with these pipe scales, when compared with stagnant conditions water flow significantly accelerated the release of both dissolved and total lead from pipe scales. Among …
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Study of spatiotemporal changes within the abandoned flotation plant site of Kirki (NE Greece) via clustering on Sentinel-2 data
… and lead-bearing phases (cerussite, anglesite, hydrocerussite, pb-jarosite, beaverite) — using Pearson correlation as the primary similarity metric. The temporal evolution of mineral assemblages was further analyzed through K-means clustering (k=4), hierarchical clustering with Ward's linkage, …