数据中心脱碳中的生物炭.pdf

1、Dr.Seth Kane,Dr.Jin Fan,and Prof.Sabbie MillerUniversity of California,DavisMaterials Decarbonization and Sustainability CenterBiochar in data center decarbonization Data centers utilize 250 kt/year of cement in the US and 1900 kt of concreteResponsible for 225 kt CO2e emissionsWhy do you care?Ameri

2、can Cement Association,2025Large-scale of physical infrastructure creates pathways to offset hard-to-abate emission sourcesTech companies are already the largest purchasers of biochar carbon creditsWhy do you care?MineralizationBiocharData from cdr.fyiLarge-scale of physical infrastructure creates p

3、athways to offset hard-to-abate emission sourcesTech companies are already the largest purchasers of biochar carbon creditsWhy do you care?BiocharBECCSBiomass geologicstorageDAC Data from cdr.fyiMost delivered carbon dioxide removal(CDR)credit globallyWhat is biochar?What is concrete?Portland Cement

4、 Association,201890%of CO2emissions fromconcreteHow can biochar be integrated into concrete?Cement replacement:10 wt.%+High emissions component+High price component+Some biochar contributes to pozzolanic reactions-Primary contributor to strength-Limited%replacementBiocharBiocharHow can biochar be in

5、tegrated into concrete?Fine aggregate replacement:30 vol.%+High volume component+Reduced density-Higher uncertainty in strength-High water adsorption&permeability-Greater increase in price-Lower emission componentBiocharHow can biochar be integrated into concrete?Separate purchasing of biochar carbo

6、n credits+Current practice+Offset emissions not limited by concrete design-Higher price for equivalent emissions reduction-Shifts the use of biochar to other industriesBiocharAll biochars are not equalEfficient scenario“Poor-practices”scenarioKane,et al.,Environmental Research Le