Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/80852
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dc.contributorDepartment of Civil and Environmental Engineering-
dc.creatorIgalavithana, AD-
dc.creatorKwon, EE-
dc.creatorVithanage, M-
dc.creatorRinklebe, J-
dc.creatorMoon, DH-
dc.creatorMeers, E-
dc.creatorTsang, DCW-
dc.creatorOk, YS-
dc.date.accessioned2019-06-27T06:36:07Z-
dc.date.available2019-06-27T06:36:07Z-
dc.identifier.issn0160-4120-
dc.identifier.urihttp://hdl.handle.net/10397/80852-
dc.language.isoenen_US
dc.publisherPergamon Pressen_US
dc.rights© 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)en_US
dc.rightsThe following publication Igalavithana, A. D., Kwon, E. E., Vithanage, M., Rinklebe, J., Moon, D. H., Meers, E., ... & Ok, Y. S. (2019). Soil lead immobilization by biochars in short-term laboratory incubation studies. Environment International, 127, 190-198. is available at https://doi.org/10.1016/j.envint.2019.03.031en_US
dc.subjectBlack carbonen_US
dc.subjectCO 2 pyrolysisen_US
dc.subjectEngineered biocharen_US
dc.subjectMetals/metalloidsen_US
dc.subjectSoil stabilizationen_US
dc.subjectWaste valorization/recyclingen_US
dc.titleSoil lead immobilization by biochars in short-term laboratory incubation studiesen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage190-
dc.identifier.epage198-
dc.identifier.doi10.1016/j.envint.2019.03.031-
dcterms.abstractExchangeable lead (Pb) extracted by ammonium acetate from three independent incubation studies was assessed to understand the influence of feedstock, pyrolysis temperatures, and production conditions on Pb immobilization capacities of different biochars. Vegetable waste biochar, pine cone, wood bark, cocopeat, red pepper stalk, and palm kernel shell were used as feedstocks (food supply and agricultural wastes) to produce biochars at 200–650 °C with and without N 2 /CO 2 . Biochars were applied at 5 and 2.5% (w w −1 ) to a Pb contaminated (i.e., 1445 mg kg −1 ) agricultural soil collected near an old mine. Lead immobilization in biochar treated soils at the end of incubation period was normalized per gram of biochar applied. Biochar produced from vegetable waste at 500 °C showed the highest Pb immobilization (87%) and highest total exchangeable cations (13.5 cmol (+) kg −1 ) at the end of the 45 d incubation period. However, on the basis of Pb immobilization per gram of biochar, red pepper stalk biochar produced in CO 2 at 650 °C was the best in Pb immobilization (0.09 mg kg −1 g −1 biochar) compared to the other biochars. The enhanced ability to immobilize Pb by biochar produced in CO 2 could be due to the presence of siloxanes (–]Si–]O–]Si–]) on biochar surface. Pearson correlation analysis revealed that alkaline pH, ash%, and N% of biochars influence in Pb immobilization and exchangeable cation availability in soil. Biochar production atmosphere considerably change its properties that influence Pb immobilization. Further studies are needed on the modification of properties and Pb immobilization by biochars produced from various feedstocks in CO 2 .-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationEnvironment international, 2019, p. 190-198-
dcterms.isPartOfEnvironment international-
dcterms.issued2019-
dc.identifier.scopus2-s2.0-85063250985-
dc.identifier.pmid30925262-
dc.description.validate201906 bcma-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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