Influence of phosphate on the transport properties of lead in sand.

摘要: Temporal moment analysis was used to examine the transport of lead species in sand columns. The influence sodium phosphate (PO(4(aq))) and hydroxyapatite (HA) on also evaluated. Transport properties microparticles (diameter>0.45 μm) were a function electrophoretic mobility: those particles with mobility less than -1 × 10(-8)m(2)/Vs exhibited significantly lower dimensionless first temporal (θ) second (σ(θ)(2)). forms investigated this work had tendency move over wide pH range. Although PO(4(aq)) amendment substantially reduced mass recoveries column effluent, formed that rapidly minimal dispersion when compared controls. Treatments HA provided limited reduction recovery changes properties. A colloid stability model predict attachment sand.