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dc.contributor.authorShen, Zhengtao
dc.contributor.authorMcMillan, Oliver
dc.contributor.authorJin, Fei
dc.contributor.authorAl-Tabbaa, Abir
dc.date.accessioned2019-04-02T14:32:20Z
dc.date.available2019-04-02T14:32:20Z
dc.date.issued2016-10-05
dc.identifier.issn0304-3894
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/291048
dc.description.abstractSalisbury biochar (produced from British broadleaf hardwood) with two different particle sizes (≤2mm and ≤0.15mm) was applied on a kaolin with three different lead (Pb(2+)) contamination levels (50mg/kg, 300mg/kg and 1000mg/kg) at the dosage of 1% in w/w. The short-term impact of biochar on the mobility and speciation of Pb(2+) in the kaolin was investigated using attenuation periods of 1, 7 and 28 days. The leachability and extractability of Pb(2+) in carbonic acid leaching and EDTA extraction tests as well as the speciation of Pb(2+) in soils were not significantly affected by biochar treatment during all periods. The insignificant effects of biochar on Pb(2+) immobilisation were most likely attributed to the high adsorption capacity of Pb(2+) on the kaolin and biochar failed to competitively adsorb Pb(2+) against kaolin. The kaolin immobilised Pb(2+) primarily through cation exchange, which represents the readily bioavailable fractions of Pb(2+) in soils and may still pose environmental risks. This paper suggests the inefficiency of biochar treament on heavy-metal contaminated clay-rich soils. Therefore a laboratory treatablity study with respect to the soil type may be crucial when large-scale biochar applications in heavy-metal associated soil remediation are evaluated.
dc.languageeng
dc.publisherElsevier BV
dc.subjectBiochar
dc.subjectImmobilise
dc.subjectKaolin
dc.subjectLead
dc.subjectSpeciation
dc.subjectAdsorption
dc.subjectCations
dc.subjectCharcoal
dc.subjectEdetic Acid
dc.subjectEnvironmental Restoration and Remediation
dc.subjectHydrogen-Ion Concentration
dc.subjectKaolin
dc.subjectLead
dc.subjectMetals
dc.subjectMetals, Heavy
dc.subjectSoil
dc.subjectSoil Pollutants
dc.titleSalisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study.
dc.typeArticle
prism.endingPage220
prism.publicationDate2016
prism.publicationNameJournal of Hazardous Materials
prism.startingPage214
prism.volume316
dc.identifier.doi10.17863/CAM.38228
dcterms.dateAccepted2016-05-13
rioxxterms.versionofrecord10.1016/j.jhazmat.2016.05.042
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
rioxxterms.licenseref.startdate2016-10-05
dc.contributor.orcidShen, Zhengtao [0000-0002-4841-710X]
dc.contributor.orcidJin, Fei [0000-0003-0899-7063]
dc.identifier.eissn1873-3336
dc.publisher.urlhttps://www.sciencedirect.com/science/article/pii/S0304389416304800?via%3Dihub#!
rioxxterms.typeJournal Article/Review
cam.issuedOnline2016-05-13
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S0304389416304800?via%3Dihub#!


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