中度嗜热氧化硫细菌及中度嗜热氧化亚铁细菌在难处理铜精矿浸出中

,(,100013;,100037):,,55,,55,,,LB,pH,:;;:TF18:A:1009-2617(2003)02-0079-03:2002-12-30:,1976-,,,,,,,,,,,1958Kennecot(),,11%,20%[1,2]60%,,,2040,6080,,,,5%[3]4060,SulfobacillusAcidimirobiumLeptospirillumthermoferrooxidansMt.leyll,1a,,,11.1,78,pH3.01.29K[4],(Fe2+);Wakesman[5],;pH2.0LB[6]222(86)20036HydrometallurgyofChinaVol.22No.2(Sum.86)Jun.20031.39K,55140römin55,Wakesman,5%1.4:9K,,:Wakesmans,pH:pH2.0LB,1.5:Cu15.57%,Fe41.11%,S34.26%,As0.81%60%70%2001%:9K,FeSO47H2O20göL:,10%,,5%,pH1.6K2Cr2O7Fe2+,,EDTA22.19K,5%Wakesmans2.22.2.19K55140römin,Wakesman,LB9K,5536h,85%,0.503kgö(m3h),0.105kgö(m3h)[6]2.2.25%Wakesmans,,pH1.09K9K,5536h,79.5%LB2.3,pHpH2.0,,pH2.5,,pH2.0,,,,pH1.5,1.52.0,,pH,pH1.52.0pH,110820036,,,,pH16d,58.0%,93.20%,58.8%,28.0%,,39K55,pH2.22.3,,pH,Wakesman,55,55,,5%,,,LB,pH,:[1]HenryL,Ehrlich.Past,PresentandFutureofbiohydromet2allurgy[J].Hydrometallurgy,2001,59(1):127-134.[2]BrierleyJA,BrierleyCL.PresentandFutureCommercialApplicaionsofBiohydrometallurgy[J].Hydrometallurgy,2001,59(2):233-239.[3]DouglasE.Biomining:Theory,MicrobesandIndurstrialPro2cess[M].Gegetountex:Landesbioscience.1997.[4]MelvinpSilvernmanandDonaldGLungdgren.StudiesontheAutotrophilicIronBacteriusFerrobacillusFerrooxidans[J].Bacteriol,,77(5):642-647.[5],.[M].:,1998.[6]NematiM,HarriwonSTL.AComparativeStudiesofThermophileandMesophileBioleachingofFerrous[J].MineralsEngneering,2000,13(1):19-24.LeachingofCopperfromCopperConcentratewithModeratelyThermophilicIron-oxidizingBacteriumandThermophilisSulfur-oxidiaingBacteriumLUOHai2Peng,YANGXiu2shan(BeijingCenterforDiseasePreventionandControl,Beijing100013;DepartmentofBiology,CapitalNormalUniversity,Beijing100037)Abstract:Amoderatelythermophiliciron2oxidizingbacteriumandamoderatelythermophilicsulfur2oxidiz2ingbacteriumwereisolatedfromgangueheapinShanxiusingselectiveculturemedium.Thethermophiliciron2oxidizingbacterium’stolerativetemperatureandpHis55and2.22.3,respectively.ItisobligatechemolithotrophandcangrowbyoxidizingFe2+toFe3+.Themoderatelythomophilicsulfur2oxidizingbac2teriumtolerativetemperatureis55,itisfacultativeautotroph,cangrowbyoxidizingFe2+andelementalsulfurinLBculturemedium.Resultsofbioleachingofcopperconcentrateusingthetwobacteriumshowthatthemoderatelythermophilicsulfur2oxidizingbacteriumcankeepsystematlowpHinfavorofbioleach2ingofcopperconcentrate.Keywords:moderatelythermophilicbacteria;microbioleaching;copperconcentrate18222,: