Effects of blending of desalinated and conventionally treated surface water on iron corrosion and its release from corroding surfaces and pre-existing scales

Journal Article

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Water research

Water Res.

1-Jul

3817

3826

CI: Copyright (c) 2013; JID: 0105072; 0 (Chlorides); 0 (Ferric Compounds); 0 (Iron Compounds); 0 (Minerals); 0 (Phosphates); 0 (Sulfates); 1310-14-1 (goethite); 39473-89-7 (ferrihydrite); E1UOL152H7 (Iron); SY7Q814VUP (Calcium); 2012/10/19 [received]; 201

England

1879-2448; 0043-1354

PMID: 23651514

eng

Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; IM

10.1016/j.watres.2013.03.052 [doi]

Unknown(0)

23651514

This study examined effects of blending desalinated water with conventionally treated surface water on iron corrosion and release from corroding metal surfaces and pre-existing scales exposed to waters having varying fractions of desalinated water, alkalinities, pH values and orthophosphate levels. The presence of desalinated water resulted in markedly decreased 0.45 mum-filtered soluble iron concentrations. However, higher fractions of desalinated water in the blends were also associated with more fragile corroding surfaces, lower retention of iron oxidation products and release of larger iron particles in the bulk water. SEM, XRD and XANES data showed that in surface water, a dense layer of amorphous ferrihydrite phase predominated in the corrosion products. More crystalline surface phases developed in the presence of desalinated water. These solid phases transformed from goethite to lepidocrocite with increased fraction of desalinated water. These effects are likely to result from a combination of chemical parameters, notably variations of the concentrations of natural organic matter, calcium, chloride and sulfate when desalinated and conventionally treated waters are blended.

Elsevier Ltd

Liu,H., Schonberger,K.D., Peng,C.Y., Ferguson,J.F., Desormeaux,E., Meyerhofer,P., Luckenbach,H., Korshin,G.V.

Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA. haizhou@engr.ucr.edu

20130416

http://vp9py7xf3h.search.serialssolutions.com/?charset=utf-8&pmid=23651514

2013