Application of microbe-induced carbonate precipitation for copper removal from copper-enriched waters: Challenges to future industrial application

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dc.contributor.authorDuarte Nass, Carla
dc.contributor.authorRebolledo, Katherina
dc.contributor.authorValenzuela, Tamara
dc.contributor.authorKopp, Matias
dc.contributor.authorJeison, David
dc.contributor.authorRivas, Mariella
dc.contributor.authorAzocar, Laura
dc.contributor.authorTorres Aravena, Alvaro
dc.contributor.authorCiudad, Gustavo
dc.date2020
dc.date.accessioned2021-04-30T17:05:08Z
dc.date.available2021-04-30T17:05:08Z
dc.description.abstractCopper contamination in watercourses is a recent issue in countries where mining operations are prevalent. In this study, the application of copper precipitation through microbe-induced carbonate precipitation (MICP) was analyzed using urea hydrolysis by bacteria to evaluate precipitated copper carbonates. This article demonstrates the application of a copper precipitation assay involving Sporosarcina pasteurii (in 0.5 mM Cu2+ and 333 mM urea) and analyzes the resultant low removal (10%). The analysis indicates that the low removal was a consequence of Cu2+ complexation with the ammonia resulting from the hydrolysis of urea. However, the results indicate that there should be a positive correlation between the initial urea concentration and the bacterial tolerance to copper. This identifies a challenge in the industrial application of the process, wherein a minimum consumption of urea represents an economic advantage. Therefore, it is necessary to design a sequential process that decouples bacterial growth and copper precipitation, thereby decreasing the urea requirement.
dc.identifier.citationJOURNAL OF ENVIRONMENTAL MANAGEMENT,Vol.256,,2020
dc.identifier.doi10.1016/j.jenvman.2019.109938
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/3990
dc.language.isoen
dc.publisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
dc.sourceJOURNAL OF ENVIRONMENTAL MANAGEMENT
dc.subject.englishMICP
dc.subject.englishCopper
dc.subject.englishBio-precipitation
dc.subject.englishUrea
dc.subject.englishSporosarcina pasteurii
dc.titleApplication of microbe-induced carbonate precipitation for copper removal from copper-enriched waters: Challenges to future industrial application
dc.typeArticle
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