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Author Pavissich, J.P.; Vargas, I.T.; Gonzalez, B.; Pasten, P.A.; Pizarro, G.E. pdf  doi
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  Title Culture dependent and independent analyses of bacterial communities involved in copper plumbing corrosion Type
  Year (up) 2010 Publication Journal Of Applied Microbiology Abbreviated Journal J. Appl. Microbiol.  
  Volume 109 Issue 3 Pages 771-782  
  Keywords bacterial community; biofilm; copper plumbing; microbially influenced corrosion; water quality  
  Abstract Aims: This study used culture-dependent and culture-independent approaches to characterize bacterial communities in copper plumbing corrosion and to assess biofilm formation and copper resistance of heterotrophic bacteria isolated from copper pipes. Methods and Results: Water and copper pipes were collected from a cold-water household distribution system affected by 'blue water' corrosion and presenting biofilm formation. Corrosion-promoting ageing experiments were performed with conditioned unused copper pipes filled with unfiltered and filtered sampled water as nonsterile and sterile treatments, respectively. During 8 weeks, stagnant water within the pipes was replaced with aerated fresh water every 2 or 3 days. Total copper and pH were determined in sampled water, and copper pipe coupons were cut for microscopic analyses. Biofilms were extracted from field and laboratory pipes, and total DNA was isolated. Bacterial communities' composition was analysed by terminal restriction fragment length polymorphism (T-RFLP) and clonal libraries of 16S rRNA genes. Heterotrophic bacterial isolates were obtained from water and biofilm extracts and characterized in terms of biofilm formation capacity and copper minimum inhibitory concentration. The results indicated that copper concentration in stagnant water from nonsterile treatments was much higher than in sterile treatments and corrosion by-products structure in coupon surfaces was different. Multivariate analysis of T-RFLP profiles and clone sequencing showed significant dissimilarity between field and laboratory biofilm communities, and a low richness and the dominant presence of Gamma- and Betaproteobacteria in both cases. Several bacterial isolates formed biofilm and tolerated high copper concentrations. Conclusions: The study demonstrates microbially influenced corrosion (MIC) in copper plumbing. Gamma- and Betaproteobacteria dominated the corroded copper piping bacterial community, whose ability to form biofilms may be important for bacterial corrosion promotion and survival in MIC events. Significance and Impact of the Study: The characterization of micro-organisms that influence copper plumbing corrosion has significant implications for distribution system management and copper corrosion control.  
  Address [Pavissich, J. P.; Vargas, I. T.; Pasten, P. A.; Pizarro, G. E.] Pontificia Univ Catolica Chile, Dept Ingn Hidraul & Ambiental, Escuela Ingn, Santiago 6904411, Chile, Email: gpizarro@ing.puc.cl  
  Corporate Author Thesis  
  Publisher Wiley-Blackwell Publishing, Inc Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1364-5072 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000280979700004 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 93  
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Author Vargas, I.T.; Fischer, D.A.; Alsina, M.A.; Pavissich, J.P.; Pasten, P.A.; Pizarro, G.E. pdf  doi
openurl 
  Title Copper Corrosion and Biocorrosion Events in Premise Plumbing Type
  Year (up) 2017 Publication Materials Abbreviated Journal Materials  
  Volume 10 Issue 9 Pages 30 pp  
  Keywords copper; corrosion; biocorrosion; drinking water; premise plumbing; MIC  
  Abstract Corrosion of copper pipes may release high amounts of copper into the water, exceeding the maximum concentration of copper for drinking water standards. Typically, the events with the highest release of copper into drinking water are related to the presence of biofilms. This article reviews this phenomenon, focusing on copper ingestion and its health impacts, the physicochemical mechanisms and the microbial involvement on copper release, the techniques used to describe and understand this phenomenon, and the hydrodynamic effects. A conceptual model is proposed and the mathematical models are reviewed.  
  Address [Vargas, Ignacio T.; Fischer, Diego A.; Alsina, Marco A.; Pasten, Pablo A.; Pizarro, Gonzalo E.] Pontificia Univ Catolica Chile, Dept Ingn Hidraul & Ambiental, Santiago 7820436, Chile, Email: itvargas@ing.puc.cl;  
  Corporate Author Thesis  
  Publisher Mdpi Ag Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1996-1944 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000411506700120 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 806  
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