Publicaciones

Experimental evidence for enhanced copper release from domestic copper plumbing under hydrodynamic control

Investigadores

Rodrigo Cienfuegos

Journal

Corrosion Science

Institución

Pontificia Universidad Católica de Chile

afiliacion

Tomás E. Olivares, Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago, Chile

Rodrigo Cienfuegos, Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago, Chile. Centro Nacional de Investigación para la Gestión Integrada de Desastres Naturales (CIGIDEN), Chile

Ignacio T. Vargas, Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago, Chile. Centro de Desarrollo Urbano Sustentable (CEDEUS), Chile

Gonzalo E. Pizarro, Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago, Chile. Centro de Desarrollo Urbano Sustentable (CEDEUS), Chile

Abstract

We present experimental results to analyze copper release from biotic and abiotic pipe surfaces and its relation to flow parameters, from Reynolds Number (Re) 1027–11,618.
For abiotic and biotic surfaces, increasing the flow velocity affected the time scale of the copper release but not necessarily the net amount of total copper incorporated into the bulk flow.
For biotic conditions the total copper concentration in the bulk flow was an order of magnitude higher than for abiotic surfaces (3.65 mg/L vs. 0.32 mg/L). Similarly, higher flow velocities enhance the presence of larger size copper nanoparticles in the bulk flow.

Keywords

Copper, SEM, Microbiological corrosion

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