Investigate the role of biofilm and water chemistry on lead deposition onto and release from polyethylene: An implication for potable water pipes.
作者： Tanvir Ahamed , Shawn P. Brown , Maryam Salehi
DOI: 10.1016/J.JHAZMAT.2020.123253
关键词:
摘要: In this study, the influence of biofilm presence and water chemistry conditions on lead (Pb) deposition onto low density polyethylene (LDPE) surface was examined. The results demonstrated that LDPE surfaces strongly significantly enhanced Pb uptake, with 13-fold greater equilibrium loading when present (1602 μg/m2) compared to condition it absent (124 μg/m2). kinetics adsorption is best described by Pseudo 2nd order kinetic model. new reduced from 1101 μg/m2 134 increased aqueous solution's ionic strength 3 × 10-6 M 0.0072 M. chlorine residual (2 mg/L) possible oxidation Pb2+ Pb4+ species. release investigated under static dynamic through immediate exposure accumulated pellets synthetic at pH 5.0 7.8. a (86 %) 7.8 (58 %). An into contact found conditions.
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