响应面法优化微波焙烧氧化锌烟尘脱氟、氯工艺参数（英文）-豆柴文库

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响应面法优化微波焙烧氧化锌烟尘脱氟、氯工艺参数（英文）
Introduction
Microwavetechnologyhasgainedsignificantattentioninrecentyearsinvariousindustrialprocessessuchasfoodprocessing,mining,andwatertreatmentduetoitseffectiveness,efficiency,andconvenience.Specifically,intheminingindustry,microwavetechnologyhasbeenproposedasapotentialsolutiontoaddressenvironmentalandoperationalchallengesassociatedwithtraditionalthermalandchemicaltreatmentprocesses.Inthisstudy,responsesurfacemethodologywasemployedtooptimizetheparametersofmicrowaveroastingprocessforthedefluorinationanddechlorinationofzincoxidefumes.
Background
Zincoxide(ZnO)iscommonlyusedasarawmaterialinavarietyofindustriessuchasrubber,glass,paint,andceramic.Duringtheproductionprocess,ZnOfumescontaininghighlevelsoffluorineandchlorinearegenerated,whichposessignificantenvironmentalandhealthrisks.Itis,therefore,essentialtodevelopanefficientandsustainabletreatmentprocessfortheremovaloftheseharmfulgases.
Microwavetechnologyhasbeenproposedasapotentialalternativetotraditionalthermalandchemicaltreatmentprocessesduetoitsuniquecharacteristicssuchashighheatingrates,uniformheating,andselectiveheating.MicrowaveroastingofZnOfumeshasbeenshowntobeeffectiveinreducingthelevelsoffluorineandchlorine,buttheprocessparameterssuchasmicrowavepower,roastingtime,andtemperaturearecriticalfactorsthatdeterminetheefficiencyoftheprocess.
Methodology
Theresponsesurfacemethodology(RSM)wasemployedtooptimizetheprocessparametersofthemicrowaveroastingprocessforthedefluorinationanddechlorinationofZnOfumes.Theexperimentaldesignwasbasedonacentralcompositedesign(CCD),andtheresponsevariablesweretheconcentrationsoffluorineandchlorineinthetreatedfumes.Theindependentvariablesweremicrowavepower,roastingtime,andtemperature,whichwerevariedwithintherangesof300-600W,5-15min,and250-450°C,respectively.
ResultsandDiscussion
Theresultsshowedthattheoptimalconditionsforthemicrowaveroastingprocessweremicrowavepowerof520W,roastingtimeof11.5min,andtemperatureof354°C,whichresultedinadefluorinationefficiencyof89