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Kinetics of aqueous Pb reaction with apatites



Kinetics of aqueous Pb reaction with apatites



Soil Science 165(12): 920-933



Apatite has been used to remediate Pb contamination; apatite dissolution releases phosphate, which combines with Pb to form highly insoluble Pb-phosphate minerals. This research focused on the effects of aqueous Pb (initial 0.185 mM) on the kinetics of apatite dissolution. Synthetic microcrystalline hydroxylapatite (HAP) and natural chlorapatite (CAP) and fluorapatite (FAP) were used in batch experiments at 22 degrees C, with pH within the range of 4.2-7.0, and in the presence of aqueous Cl.

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