The influence of biochar and black carbon on reduction and bioavailability of chromate in soils.
摘要：
The widespreadsefhromium (Cr)as deleterious impactnhe environment. numberf pathways,othioticndbiotic inharacter, determineheatendpeciationfr inoils.hromium exists inwo predominantpecies inhe environment:rivalent [(Cr(III)]ndexavalent [Cr(VI)].fhesewoorms,r(III) is nontoxicnd istronglyoundooil particles, whereasr(VI) isoreoxicndolublendeadily leaches into groundwater.heoxicityfr(VI)aneitigatedyeducing itor(III)pecies.hebjectivefhistudy waso examinehe effectfrganicarbonourcesnheeduction,icrobialespiration,nd phytoavailabilityfr(VI) inoils.rganicarbonources,uchslackarbon (BC)ndiochar, wereestedorheir potential ineducingr(VI) incidicndlkalineontaminatedoils.nlkalineoil waselectedoonitorhe phytotoxicityfr(VI) inunflower plant.uresultshowedhatsingCesulted in greatereductionfr(VI) inoilsompared withiochar.his isttributedohe differences in dissolvedrganicarbonndunctional groupshat provide electronsorheeductionfr(VI). When increasing levelsfr wereddedooils,othicrobialespirationnd plant growth decreased.hepplicationfC wasore effectivehaniochar in increasingheicrobial populationnd initigatinghe phytotoxicityfr(VI).he netenefitfC emergedsn increase in plantiomassnd decrease inroncentration in plantissue.onsequently, it wasoncludedhatC is potentialeducingmendment initigatingr(VI)oxicity inoilnd plants
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DOI：
10.2134/jeq2011.0145
被引量：
年份：
2012
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