Effects of blending on surface characteristics of copper corrosion products in drinking water distribution systems

Weizhong Xiao; Seungkwan Hong; Zhijian Tang; Sudipta Seal; James S. Taylor

doi:10.1016/j.corsci.2006.04.018

Effects of blending on surface characteristics of copper corrosion products in drinking water distribution systems

Weizhong Xiao, Seungkwan Hong, Zhijian Tang, Sudipta Seal, James S. Taylor

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

Copper scales formed over 6-months during exposure to ground, surface and saline waters were characterized by EDS, XRD and XPS. Scale color and hardness were light red-brown-black/hard for high alkalinity and blue-green/soft for high SO₄ or Cl waters. Cl was present in surface or saline copper scales. The Cu/Cu₂O ratio decreased with time indicating an e transfer copper corrosion mechanism. Cu₂O, CuO, and Cu(OH)₂ dominated the top 0.5-1 A° scale indicating continuous corrosion. Cu₂O oxidation to CuO increased with alkalinity, and depended on time and pH. Total copper release was predicted using a Cu(OH)₂ model.

Original language	English
Pages (from-to)	449-468
Number of pages	20
Journal	Corrosion Science
Volume	49
Issue number	2
DOIs	https://doi.org/10.1016/j.corsci.2006.04.018
Publication status	Published - 2007 Feb

Keywords

A. Copper
B. Modelling studies
B. XPS
B. XRD
C. Corrosion potential

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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abstract = "Copper scales formed over 6-months during exposure to ground, surface and saline waters were characterized by EDS, XRD and XPS. Scale color and hardness were light red-brown-black/hard for high alkalinity and blue-green/soft for high SO4 or Cl waters. Cl was present in surface or saline copper scales. The Cu/Cu2O ratio decreased with time indicating an e transfer copper corrosion mechanism. Cu2O, CuO, and Cu(OH)2 dominated the top 0.5-1 A° scale indicating continuous corrosion. Cu2O oxidation to CuO increased with alkalinity, and depended on time and pH. Total copper release was predicted using a Cu(OH)2 model.",

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T1 - Effects of blending on surface characteristics of copper corrosion products in drinking water distribution systems

AU - Xiao, Weizhong

AU - Hong, Seungkwan

AU - Tang, Zhijian

AU - Seal, Sudipta

AU - Taylor, James S.

PY - 2007/2

Y1 - 2007/2

N2 - Copper scales formed over 6-months during exposure to ground, surface and saline waters were characterized by EDS, XRD and XPS. Scale color and hardness were light red-brown-black/hard for high alkalinity and blue-green/soft for high SO4 or Cl waters. Cl was present in surface or saline copper scales. The Cu/Cu2O ratio decreased with time indicating an e transfer copper corrosion mechanism. Cu2O, CuO, and Cu(OH)2 dominated the top 0.5-1 A° scale indicating continuous corrosion. Cu2O oxidation to CuO increased with alkalinity, and depended on time and pH. Total copper release was predicted using a Cu(OH)2 model.

AB - Copper scales formed over 6-months during exposure to ground, surface and saline waters were characterized by EDS, XRD and XPS. Scale color and hardness were light red-brown-black/hard for high alkalinity and blue-green/soft for high SO4 or Cl waters. Cl was present in surface or saline copper scales. The Cu/Cu2O ratio decreased with time indicating an e transfer copper corrosion mechanism. Cu2O, CuO, and Cu(OH)2 dominated the top 0.5-1 A° scale indicating continuous corrosion. Cu2O oxidation to CuO increased with alkalinity, and depended on time and pH. Total copper release was predicted using a Cu(OH)2 model.

KW - A. Copper

KW - B. Modelling studies

KW - B. XPS

KW - B. XRD

KW - C. Corrosion potential

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