Enhanced copper release from pipes by alternating stagnation and flow events

Simple item page
dc.contributor.authorCalle, Gustavo R.
dc.contributor.authorVargas, Ignacio T.
dc.contributor.authorAlsina, Marco A.
dc.contributor.authorPasten, Pablo A.
dc.contributor.authorPizarro, Gonzalo E.
dc.date.accessioned2024-01-10T13:12:45Z
dc.date.available2024-01-10T13:12:45Z
dc.date.issued2007
dc.description.abstractTraditional studies of copper release in plumbing systems assume that the water extracted from a pipefollows a plug-type flow and that the pipe surface does not interact with the bulk water under flow conditions. We characterized actual stagnation-flushing cycles in a household pipe undergoing Corrosion in the presence of a microbial biofilm. The mass of copper released in 10 experiments was on average 8 times the value estimated by using the plug-flow assumption. The experimental copper release pattern was explained by an advection-diffusion model only if a high copper concentration occurs near the pipe surface after stagnation. Microscopic examination of the pipe surface showed a complex assemblage of biotic and abiotic features. X-ray diffraction analyses identified only malachite, while X-ray absorption spectroscopy also revealed cupric hydroxide and cuprite. These results indicate that the surface serves as a storage compartment of labile copper that may be released under flow conditions. Thus, the diffusive transport from the pipe surface to the bulk during stagnation is not the only control of the flux of copper to the tap water when porous reactive microstructures cover the pipe. Our results highlight the need for models that consider the interaction between the hydrodynamics, chemistry, and structure at the solid-water interface to predict the release of corrosion byproducts into drinking water.
dc.fechaingreso.objetodigital2024-04-23
dc.format.extent7 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1021/es071079b
dc.identifier.issn0013-936X
dc.identifier.pubmedidMEDLINE:18044522
dc.identifier.urihttps://doi.org/10.1021/es071079b
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78227
dc.identifier.wosidWOS:000250556100041
dc.information.autorucIngeniería;Pastén P;S/I;87432
dc.information.autorucIngeniería;Pizarro G;S/I;83223
dc.issue.numero21
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final7436
dc.pagina.inicio7430
dc.publisherAMER CHEMICAL SOC
dc.revistaENVIRONMENTAL SCIENCE & TECHNOLOGY
dc.rightsacceso restringido
dc.subjectBY-PRODUCT RELEASE
dc.subjectSEDIMENT-WATER INTERFACE
dc.subjectDRINKING-WATER
dc.subjectORGANIC-MATTER
dc.subjectDISTRIBUTION-SYSTEM
dc.subjectBIOFILM STRUCTURE
dc.subjectPOTABLE WATER
dc.subjectCORROSION
dc.subjectMODEL
dc.subjectBIOCORROSION
dc.titleEnhanced copper release from pipes by alternating stagnation and flow events
dc.typeartículo
dc.volumen41
sipa.codpersvinculados87432
sipa.codpersvinculados83223
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Enhanced copper release from pipes by alternating stagnation and flow events.pdf
Size:
3.03 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Artículos de revistas