Mobilization of heavy metals from urban contaminated soils under water inundation conditions Mukwaturi, M and Lin, Chu Xia 2015, Mobilization of heavy metals from urban contaminated soils under water inundation conditions, Journal of Hazardous Materials, vol. 285, pp. 445-452, doi: 10.1016/j.jhazmat.2014.10.020. Attached Files Name Description MIMEType Size Downloads Title Mobilization of heavy metals from urban contaminated soils under water inundation conditions Author(s) Mukwaturi, M Lin, Chu Xia orcid.org/0000-0002-2273-0560 Journal name Journal of Hazardous Materials Volume number 285 Start page 445 End page 452 Total pages 8 Publisher Elsevier Place of publication Amsterdam, The Netherlands Publication date 2015-03-21 ISSN 0304-3894 1873-3336 Keyword(s) Contaminated soil Heavy metal Water inundation Metal mobility Environmental risk Brownfield Summary A microcosm experiment was conducted to investigate heavy metal release from the urban soils heavily contaminated by past industrial activities. The aim was to assess the mobility of various heavy metals under inundation with water. The results show that reductive dissolution of iron and manganese compounds was markedly enhanced by organic matter. However, mobilization of Fe and Mn was affected by the abundance of these metals in the soils. The dissolution of Fe and Mn oxides led to the release of As and Zn that were bound to them. However, mixed temporal variation patterns were observed for As, suggesting complication of As mobility by other factors. It is likely that the added organic matter played a role in the formation of organic matter-Fe(III)-arsenic association, leading to partial re-immobilisation of the liberated As at the latter stage of the experiment. Zn showed a consistent trend where it was initially released with reductive dissolution of Fe and Mn compounds and then re-immobilised, possibly through hydrolysis to form insoluble zinc hydroxide. In spite of abundant presence, release of Pb was limited due to its low solubility under less acidic conditions. It appears that anaerobic environment stabilized the soil-borne Cr by forming insoluble Cr(OH)3. Language eng DOI 10.1016/j.jhazmat.2014.10.020 Indigenous content off Field of Research 03 Chemical Sciences 05 Environmental Sciences 09 Engineering HERDC Research category C1.1 Refereed article in a scholarly journal Copyright notice ©2014, Elsevier B.V. Persistent URL http://hdl.handle.net/10536/DRO/DU:30140734 Document type: Journal Article Collection: Faculty of Science, Engineering and Built Environment Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Mon, 10 Aug 2020, 17:10:34 EST Tue, 11 Aug 2020, 05:01:21 EST Tue, 11 Aug 2020, 06:04:44 EST Wed, 23 Sep 2020, 12:02:50 EST Wed, 23 Sep 2020, 12:04:09 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 33 times in Scopus Search Google Scholar Access Statistics: 16 Abstract Views, 3 File Downloads  -  Detailed Statistics Created: Mon, 10 Aug 2020, 17:10:34 EST

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