Arsenic transformation behaviour during thermal decomposition of P. vittata, an arsenic hyperaccumulator

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dc.contributor.authorDuan, Lunbo
dc.contributor.authorLi, Xiaole
dc.contributor.authorJiang, Ying
dc.contributor.authorLei, Mei
dc.contributor.authorDong, Ziping
dc.contributor.authorLonghurst, Philip J.
dc.date.accessioned2017-01-24T10:45:33Z
dc.date.available2017-01-24T10:45:33Z
dc.date.issued2017-01-22
dc.description.abstractThermal treatment of P. vittata, an arsenic hyperaccumulator harvested from contaminated land is a promising method of achieving volume reduction, energy production and arsenic (As) recovery simultaneously. In this paper, the arsenic transformation characteristics of field-harvested P. vittata were investigated during its pyrolysis and gasification process. The produced solid residue and flue gas were analysed by a high performance liquid chromatography coupled with inductively coupled plasma mass spectrometry (HPLC-ICP-MS) to determine both the arsenic concentration and speciation. Moreover, the occurrence of arsenic in the solid residues was further identified as soluble and insoluble, which can feed information to the next arsenic recovery step. Results show that the fuel arsenic into gas phase increases firstly from 400 °C to 600 °C, but then drops from 600 °C to 800 °C, probably due to the self-retention of arsenic by CaO enriched in this P. vittata. Further increasing temperature to 900 °C will result in fast arsenic release. Gasification results in slightly higher arsenic release into the gas phase compared with pyrolysisen_UK
dc.identifier.citationLunbo Duan, Xiaole Li, Ying Jiang, Mei Lei, Ziping Dong, Philip Longhurst, Arsenic transformation behaviour during thermal decomposition of P.vittata, an arsenic hyperaccumulator, Journal of Analytical and Applied Pyrolysis, Vol. 124, March 2017, pp. 584-591en_UK
dc.identifier.issn0165-2370
dc.identifier.urihttp://dx.doi.org/10.1016/j.jaap.2017.01.013
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/11348
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjecthyperaccumulatoren_UK
dc.subjectthermal treatmenten_UK
dc.subjectarsenicen_UK
dc.subjectspeciationen_UK
dc.subjectsolubilityen_UK
dc.titleArsenic transformation behaviour during thermal decomposition of P. vittata, an arsenic hyperaccumulatoren_UK
dc.typeArticleen_UK

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