Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/12048
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dc.contributor.authorSingh, Bhupinder Palen
dc.contributor.authorCowie, Annetteen
dc.contributor.authorSmernik, Ronald Jen
dc.date.accessioned2013-02-18T14:44:00Z
dc.date.issued2012en
dc.identifier.citationEnvironmental Science & Technology, 46(21), p. 11770-11778en
dc.identifier.issn0013-936Xen
dc.identifier.issn1520-5851en
dc.identifier.urihttps://hdl.handle.net/1959.11/12048en
dc.description.abstractThe stability of biochar carbon (C) is the major determinant of its value for long-term C sequestration in soil. A long-term (5 year) laboratory experiment was conducted under controlled conditions using 11 biochars made from five C3 biomass feedstocks (Eucalyptus saligna wood and leaves, papermill sludge, poultry litter, cow manure) at 400 and/or 550 °C. The biochars were incubated in a vertisol containing organic C from a predominantly C4-vegetation source, and total CO₂-C and associated δ¹³C were periodically measured. Between 0.5% and 8.9% of the biochar C was mineralized over 5 years. The C in manure-based biochars mineralized faster than that in plant-based biochars, and C in 400 °C biochars mineralized faster than that in corresponding 550 °C biochars. The estimated mean residence time (MRT) of C in biochars varied between 90 and 1600 years. These are conservative estimates because they represent MRT of relatively labile and intermediate-stability biochar C components. Furthermore, biochar C MRT is likely to be higher under field conditions of lower moisture, lower temperatures or nutrient availability constraints. Strong relationships of biochar C stability with the initial proportion of nonaromatic C and degree of aromatic C condensation in biochar support the use of these properties to predict biochar C stability in soil.en
dc.languageenen
dc.publisherAmerican Chemical Societyen
dc.relation.ispartofEnvironmental Science & Technologyen
dc.titleBiochar Carbon Stability in a Clayey Soil As a Function of Feedstock and Pyrolysis Temperatureen
dc.typeJournal Articleen
dc.identifier.doi10.1021/es302545ben
dc.subject.keywordsCarbon Sequestration Scienceen
dc.subject.keywordsForestry Sciencesen
local.contributor.firstnameBhupinder Palen
local.contributor.firstnameAnnetteen
local.contributor.firstnameRonald Jen
local.subject.for2008070599 Forestry Sciences not elsewhere classifieden
local.subject.for2008050301 Carbon Sequestration Scienceen
local.subject.seo2008829802 Management of Greenhouse Gas Emissions from Plant Productionen
local.subject.seo2008820199 Forestry not elsewhere classifieden
local.subject.seo2008961499 Soils not elsewhere classifieden
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailbsingh20@une.edu.auen
local.profile.emailacowie4@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20121127-14348en
local.publisher.placeUnited States of Americaen
local.format.startpage11770en
local.format.endpage11778en
local.peerreviewedYesen
local.identifier.volume46en
local.identifier.issue21en
local.contributor.lastnameSinghen
local.contributor.lastnameCowieen
local.contributor.lastnameSmerniken
dc.identifier.staffune-id:bsingh20en
dc.identifier.staffune-id:acowie4en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:12251en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleBiochar Carbon Stability in a Clayey Soil As a Function of Feedstock and Pyrolysis Temperatureen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.description.statisticsepubsVisitors: 264<br />Views: 264<br />Downloads: 0en
local.search.authorSingh, Bhupinder Palen
local.search.authorCowie, Annetteen
local.search.authorSmernik, Ronald Jen
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