Performance of phosphonates as copper(II) ions stabilization agents for industrial water systems

• Z. Amjad

Walsh University, School of Arts and Sciences, North Canton, OH 44720, USA

Abstract: Copper(II) salts have long been used to kill algae in water systems, but they can precipitate as insoluble salts and form deposits on equipment surface. It is important to remove toxic metal from industrial waste because of contamination and toxicity issues. This paper discusses the testing and effects of various phosphonates to control copper-based fouling in the industrial water systems. It has been found that Cu(II) ions stabilization (complexation, precipitation, dispersion, etc.) strongly depends on solution pH, reaction time, and phosphonate concentration. Results on the evaluation of various phosphonates suggest the following order, in terms of decreasing effectiveness: HEDP ≈ HPA > PAPEMP > AMP >> PBTC.

Keywords: copper(II), precipitation, inhibition, stabilization, dispersion, phosphonates

Int. J. Corros. Scale Inhib., 2015, 4, no. 1, 75-84 PDF (352 K)
doi: 10.17675/2305-6894-2015-4-1-075-084

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