Publications by authors named "Javier A Locsin"
Orthophosphate-polyphosphate blends are commonly used to control lead release into drinking water, but little is known about how they interact with lead corrosion scale. Conventional corrosion control practice assumes that orthophosphate controls lead release by forming insoluble Pb-phosphate minerals, but this does not always occur, and under certain conditions, phosphate blends may increase lead release. Here, we used continuously-stirred tank reactors to compare orthophosphate-polyphosphate blends with orthophosphate on the basis of lead (II) carbonate dissolution and transformation at environmentally relevant phosphate concentrations.
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- * A study conducted in Halifax, Canada showed a seasonal pattern in lead release linked to aluminum levels in orthophosphate-treated water.
- * Experiments revealed that higher aluminum concentrations increase lead release from pipe materials by 41%, suggesting aluminum's role in reducing the effectiveness of orthophosphate in controlling lead solubility.