Assessment of waste oyster shells and coal mine drainage sludge

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1、EnvironSciPollutRes(2016)23:2362–2370DOI10.1007/s11356-015-5456-9RESEARCHARTICLEAssessmentofwasteoystershellsandcoalminedrainagesludgeforthestabilizationofAs-,Pb-,andCu-contaminatedsoil112DeokHyunMoon&KyungHoonCheong&AgamemnonKoutsospyros&3456Yoon-YoungChang&

2、SeunghunHyun&YongSikOk&Jeong-HunParkReceived:5July2015/Accepted:17September2015/Publishedonline:28September2015#Springer-VerlagBerlinHeidelberg2015AbstractAnoveltreatmentmixwasdesignedforthesimul-(XANES)resultsshowedthatAswaspresentintheformoftaneousimmobiliz

3、ationofAs,Cu,andPbincontaminatedAs(V)inthecontrolsampleandthatnochangesinAsspeci-soilsusingnatural(wasteoystershells(WOS))andindustrialationwereobservedfollowingtheCOS-CMDStreatments.(coalminedrainagesludge(CMDS))wastematerials.TheThescanningelectronmicroscop

4、y(SEM)-energydispersivetreatmentswereconductedusingthestandardU.S.sievesizeX-rayspectroscopy(EDX)sampletreatedwith10wt%COSno.20(0.85mm)calcinedoystershells(COS)andCMDSand10wt%CMDSindicatedthatAsimmobilizationmaybematerialswithacuringtimeof1and28days.TheAsimmo

5、-associatedwiththeformationofCa–AsandFe–Asprecipi-bilizationtreatmentswereevaluatedusingthe1-NHClextrac-tateswhilePbandCuimmobilizationwasmostprobablytionfluid,whereasthePbandCuimmobilizationtreatmentslinkedtocalciumsilicatehydrates(CSHs)andcalciumalumi-weree

6、valuatedusingthe0.1-NHClextractionfluidbasedonnumhydrates(CAHs).theKoreanleachingstandards.ThetreatmentresultsshowedthattheimmobilizationofAs,Cu,andPbwasbestachievedKeywordsImmobilization.As.Heavymetals.Calcinedusingacombinationmixof10wt%COSand10wt%CMDS.oyste

7、rshell.Coalminedrainagesludge.XANESThistreatmentmixwashighlyeffectiveleadingtosuperiorleachabilityreductionsforallthreetargetcontaminants(>93%forAsand>99%forCuandPb)foracuringperiodIntroductionof28days.TheX-rayabsorptionnear-edgestructurePbandCusoilcontaminat

8、ionincivilandmilitaryfiringrangesResponsibleeditor:ZhihongXuisaseriousproblemthatoftenrequiresimmediateremedialaction.Typicalmilitary-gradebullets,madeofPballoyslugs*Jeong-HunParkenclosed