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1、komnitsas.qxd1/2/20024:27Page109GlobalNest:theInt.J.Vol3,No2,pp109-116,2001Copyright©2001GLOBALNESTPrintedinGreece.AllrightsreservedENVIRONMENTALIMPACTSATCOALWASTEDISPOSALSITES-EFFICIENCYOFDESULFURIZATIONTECHNOLOGIESK.KOMNITSAS1*1Dep.ofMiningandMetallurgicalEng.,I.PASPALIARIS1NationalTechnical
2、UniversityofAthens,ZografosCampus,GR15780Athens,GREECEM.ZILBERCHMIDT22MoscowStateMiningUniversity,S.GROUDEV3Dep.ofPhysicsofRockResearch,LeninskyAve.6,117935Moscow,RUSSIA3UniversityofMiningandGeologySofia,Dept.ofEngineeringGeoecology,StudentskiGradDurvenitza,1100Sofia,BULGARIAReceived:04/10/01*
3、towhomallcorrespondenceshouldbeaddressedAccepted:05/12/01e-mail:komni@central.ntua.grABSTRACTDuringbeneficiationofcoalatthecoalminingareaofTula,Russia,hugevolumesofcoalwasteswithconsiderableresidualpyritecontentareproduced.Thesewastesthatareusuallydisposedofwithoutspecificcareintheenvironmenta
4、reactivesourcesofcoalminedrainagegenerationwhichseverelycontaminatessoils,surface-andgroundwaterandendangerstheecosystemsofthearea.Inthepresentpaperacompleteenvironmentalcharacterizationresearchiscarriedoutinordertodeterminethecharacteristicsofthewastes,establishtheiracidgenerationpotential,th
5、eleachabilityandbio-availabilityofseveralhazardousconstituentsandpredicttheenvironmentalimpactsatthedis-posalsites.Basedonthisdataaswellasonprocessparametersanddisposalpractices,anevaluationofdesulphurizationtechnologiesiscarriedout.Experimentalstudiesrevealthatthesewastesareconsideredasperman
6、entsourcesofcoalminedrainagegenerationandthereforecauseextensivecontaminationatthedisposalsites.Inaddition,duetoseveraltechnologicalconstraintsofthedesulphurizationtechnologiesandthecharacteristicsofthewastes,thepotentialofinsitudesulphurizationisconsideredlow.Desulphurizationtechnologiespre-s
7、entahigherpotentialonlyifappliedintheframeworkofanintegratedwastemanagementscheme.INTRODUCTIONAtTulacoalregion,200kmsouthofMoscow,inherentpyriteandthegenerationofacidity.Russia,coalbeneficiationwasteswithhighScon-Oxidationofpyriterelea
