Biologically induced corrosion of copper pipes in low-pH water (Journal article)

Reyes, A./ Letelier, M. V./ De la Iglesia, R./ Gonzalez, B./ Lagos, G.

The aim of this paper was to study the influence of microbial biofilms oil the high copper levels measured in the drinking water of rural houses. Drinking water parameters and copper pipe surfaces were analysed in the copper plumbing systems of rural and urban houses. The water in rural houses had pH values of 6.2 and alkalinity values of 63 mg/L as CaCO3, whereas in urban houses the pH values were 6.9 with alkalinity values of 98 mg/L as CaCO3. The stagnant water of rural houses contained more than 5 mg/L of soluble copper in comparison with just 0.41 mg/L in urban houses. The inner surface of copper pipes in rural houses showed very porous deposit of malachite and cuprite along with extracellular polymeric substances, rod-shaped microorganisms, and pits. A bacterial strain identified as Variovorax sp. was isolated from bacterial biofilms. In contrast, the copper pipes of urban houses did not contain bacterial biofilms, the deposit of malachite and cuprite were homogenous and showed uniform attack. The existence of bacterial biofilms along with the aggressive water quality could contribute to the increase of the copper by-product release to water and to the formation of pits oil copper pipe surfaces. (C) 2007 Elsevier Ltd. All rights reserved.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής
Keywords: copper,corrosion products,bacterial biofilms,low-ph drinking water,microbiologically influenced corrosion,deterioration,degradation,system
URI: https://olympias.lib.uoi.gr/jspui/handle/123456789/23462
ISSN: 0964-8305
Link: <Go to ISI>://000254224800002
http://ac.els-cdn.com/S0964830507000820/1-s2.0-S0964830507000820-main.pdf?_tid=a8626c6d1ceff194d603002d0954d8ce&acdnat=1332827713_de237598da19fbb183fd8ea447bff730
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

Files in This Item:
File Description SizeFormat 
Reyes-2008-Biologically induced.pdf844.94 kBAdobe PDFView/Open    Request a copy


 Please use this identifier to cite or link to this item:
https://olympias.lib.uoi.gr/jspui/handle/123456789/23462
  This item is a favorite for 0 people.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.