A study on selective leaching of heavy metals vs. iron from fly ash

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Elomaa, Heini
dc.contributor.author Seisko, Sipi
dc.contributor.author Lehtola, Jenna
dc.contributor.author Lundström, Mari
dc.date.accessioned 2019-05-06T09:12:14Z
dc.date.available 2019-05-06T09:12:14Z
dc.date.issued 2019-04-01
dc.identifier.citation Elomaa , H , Seisko , S , Lehtola , J & Lundström , M 2019 , ' A study on selective leaching of heavy metals vs. iron from fly ash ' JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT . https://doi.org/10.1007/s10163-019-00858-w en
dc.identifier.issn 1438-4957
dc.identifier.issn 1611-8227
dc.identifier.other PURE UUID: 5a3932b8-4ba0-4525-a054-f86fe4e97332
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/a-study-on-selective-leaching-of-heavy-metals-vs-iron-from-fly-ash(5a3932b8-4ba0-4525-a054-f86fe4e97332).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85064348048&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/33416057/CHEM_Elomaa_et_al_A_Study_on_Selective_Leaching_2019_Journal_of_Material_Cycles_and_Waste_Management.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/37669
dc.description.abstract Incinerator plant waste streams contain underexploited metals originating from households and industrial operators. The objective was to investigate the dissolution behavior of fly ash in: 0.2–7 M HCl, 0.2–7 M H 2 SO 4 , 0.5–1 M oxalic acid, 0.5–4 M citric acid, 0.5–7 M acetic acid, water, and ethaline, at 33 °C during 24 h leaching. The capability for high metals’ extraction of Zn, Cu, Ni, Pb, and Fe and management of the heavy metal Pb through leaching or precipitation was investigated. Selective leaching of valuable metals vs. Fe was observed. The target was to find a sustainable leaching method and provide a basis for further development of metal recovery from fly ash. The highest Zn extraction (> 80%) was achieved with 3 M H 2 SO 4 and 7 M HCl, which also dissolved Cu (> 87%) and Ni (> 65%). However, more dilute HCl, 0.2 M, was able to provide Zn, Cu, and Ni extractions of 43, 86, and 18%, respectively. Efficient Pb leaching was achieved in HCl—complete extraction was provided by 3 and 5 M HCl, whereas H 2 SO 4 did not extract Pb due to PbSO 4 formation; similarly, in oxalic acid, Pb precipitated as PbC 2 O 4 . Ethaline could extract 50% of Pb with high selectivity towards Fe. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Springer Japan
dc.rights openAccess en
dc.subject.other Waste Management and Disposal en
dc.subject.other Mechanics of Materials en
dc.subject.other 216 Materials engineering en
dc.subject.other material efficiency en
dc.subject.other recycling en
dc.title A study on selective leaching of heavy metals vs. iron from fly ash en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Hydrometallurgy and Corrosion
dc.contributor.department Department of Chemical and Metallurgical Engineering en
dc.subject.keyword Waste Management and Disposal
dc.subject.keyword Mechanics of Materials
dc.subject.keyword 216 Materials engineering
dc.subject.keyword material efficiency
dc.subject.keyword recycling
dc.identifier.urn URN:NBN:fi:aalto-201905062789
dc.identifier.doi 10.1007/s10163-019-00858-w
dc.type.version publishedVersion

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