Energy efficient copper electrowinning and direct deposition on carbon nanotube film from industrial wastewaters

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Hannula, Pyry Mikko Khalid, Muhammad Kamran Janas, Dawid Yliniemi, Kirsi Lundström, Mari 2018-12-10T10:15:34Z 2018-12-10T10:15:34Z 2019-01-10
dc.identifier.citation Hannula , P M , Khalid , M K , Janas , D , Yliniemi , K & Lundström , M 2019 , ' Energy efficient copper electrowinning and direct deposition on carbon nanotube film from industrial wastewaters ' Journal of Cleaner Production , vol. 207 , pp. 1033-1039 . DOI: 10.1016/j.jclepro.2018.10.097 en
dc.identifier.issn 0959-6526
dc.identifier.issn 1879-1786
dc.identifier.other PURE UUID: 42cbe321-4fbc-400e-a3fa-0f62f2aa73b9
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE LINK:
dc.identifier.other PURE FILEURL:
dc.description.abstract Heavy metal pollution is one of the most serious environmental issues of today. Removal of one common pollutant, copper, from synthetic wastewaters (containing copper, iron, sulfur and sodium) and complex authentic metallurgical plant wastewater (containing copper, iron, aluminum, zinc, nickel, arsenic, sulfur and lead among others) was studied by electrowinning. Due to the complexity and low concentration of these wastewater streams, energy efficient copper removal is challenging. The copper concentration in the investigated solutions varied from 100 to 428 ppm, while the iron concentration was an order of magnitude larger. Copper was recovered energy efficiently on glassy carbon from all investigated solutions that contained iron with a small specific energy consumption (1.5–2.5 kWh/kg Cu), depending on the solution composition and employed parameters. In the absence of iron, the specific energy consumption increased to ca. 3.5 kWh/kg Cu with the same parameters. The results indicate that the presence of iron in copper containing wastewater induces lower energy consumption during electrowinning, due to a decrease in cell voltage. Due to the low applied polarization the produced copper deposits from the authentic industrial wastewater were smooth and bright with no other metals as impurities, confirmed by energy-dispersive X-ray spectroscopy. Electrowinning was also applied on a carbon nanotube film as the working electrode to create carbon nanotube-copper composite structures of high purity directly from the industrial wastewater. These results highlight the energy efficient recovery of high purity copper from complex industrial wastewaters by electrowinning and furthermore, that the method may be used in producing high added value materials. en
dc.format.extent 7
dc.format.extent 1033-1039
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Journal of Cleaner Production en
dc.relation.ispartofseries Volume 207 en
dc.rights openAccess en
dc.subject.other Environmental Science(all) en
dc.subject.other Industrial and Manufacturing Engineering en
dc.subject.other Renewable Energy, Sustainability and the Environment en
dc.subject.other Strategy and Management en
dc.subject.other 216 Materials engineering en
dc.title Energy efficient copper electrowinning and direct deposition on carbon nanotube film from industrial wastewaters en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Hydrometallurgy and Corrosion
dc.contributor.department Silesian University of Technology
dc.contributor.department Department of Chemistry and Materials Science
dc.contributor.department Department of Chemical and Metallurgical Engineering en
dc.subject.keyword Carbon nanotubes
dc.subject.keyword Copper
dc.subject.keyword Electrowinning
dc.subject.keyword Energy efficiency
dc.subject.keyword Recovery
dc.subject.keyword Wastewater
dc.subject.keyword HEAVY-METAL IONS
dc.subject.keyword WASTE-WATER
dc.subject.keyword Environmental Science(all)
dc.subject.keyword Industrial and Manufacturing Engineering
dc.subject.keyword Renewable Energy, Sustainability and the Environment
dc.subject.keyword Strategy and Management
dc.subject.keyword 216 Materials engineering
dc.identifier.urn URN:NBN:fi:aalto-201812106030
dc.identifier.doi 10.1016/j.jclepro.2018.10.097
dc.type.version publishedVersion

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