This paper addresses changes of lead release and colloidal mobilization from lead dioxide
(PbO<sub>2</sub>) associated with the introduction of chloramine, presence of natural organic matter (NOM) and addition of
phosphate corrosion inhibitors in drinking water distribution systems. Experimental work
showed that when NOM was present, the surface potential of PbO<sub>2</sub> exhibited a prominent
negative shift and colloidal mobilization of Pb(IV) particles became prominent. The presence
of chloramine did not significantly change these effects of NOM on the colloidal behavior of
PbO<sub>2</sub>. Effects of phosphate corrosion inhibitors on colloidal lead release were examined. It
was determined that the formation of nano particles of hydroxypyromorphite Pb<sub>5</sub>(PO<sub>4</sub>)<sub>3</sub>OH greatly decreased lead release. Includes 9 references, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 900 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 6 |
| Published : | 11/01/2009 |
