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1、Trans.TianjinUniv.2011,17:045-050DOI10.1007/s12209-011-1512-9DecolorizationKineticsofSludgeProteinSolution60*byCoγ-RayIrradiation/H2O2OxidationXIANGYulin(相玉琳)，ZHANGWeijiang(张卫江)，ZHENGHao(郑浩)(SchoolofChemicalEngineeringandTechnology,TianjinUniversity,Tianjin300072,China)©TianjinUniversitya
2、ndSpringer-VerlagBerlinHeidelberg2011Abstract：Inordertocarryoutdecolorization,sludgeproteinsolution,adarkbrownclosetoblacksolutionfrom60activatedsludge,wassubjectedtoCoγ-rayirradiationinthepresenceofhydrogenperoxide.UV/Visspectropho-tometricmethodwasusedtoinvestigatetheeffectofH2O2ontheco
3、lorationapparentkineticsandrateconstantsofsludgeproteinsolutionunderγ-rayirradiation.Inaddition,theeffectsofirradiationdose,initialsludgeproteinsolutionconcentration,andpHvalueonthedecolorizationefficiencyofsludgeproteinsolutionwerestudied.Resultsshowedthatthedecolorizationapparentkinetic
4、sofsludgeproteinsolutionwasafirst-orderreaction.Thesolutiondecoloriza-tionpercentageincreasedwiththeincreaseofirradiationdoseorthedecreaseofinitialsludgeproteinsolutionconcen-tration.TheexaminationresultsofpHvalueshowedthatthesludgeproteinsolutioncouldbemoreefficientlydecolor-izedinalkali
5、nemediathaninacidmedia.Moreover,sensoryevaluationandfoamabilityanalysisindicatedthatirradi-atedsamplesunderH2O2oxidationshowedbettersensoryscoreandfoamability.Keywords：sludgeproteinsolution;decolorizationkinetics;irradiation;hydrogenperoxide;sensoryevaluation;foamabilitySludgeproteinsolut
6、ionobtainedfromactivatedirradiation/H2O2oxidationisstillsparse,especiallyinsludgecanbeappliedintheareasoffoamconcreteandkineticsanalysis.foamfireextinguishingagentbecauseofitsgoodfoam-Thisstudyaimedatthedecolorizationofsludgepro-60ingproperties.However,thecolorofsludgeproteinsolu-teinsolu
7、tionunderCoγ-rayirradiationandH2O2oxida-tionistoodark,whichhasrestricteditswideapplication.tion.Thedatawereinterpretedintermsofkineticpa-Nowadays,therearemanyapproachestodecoloriza-rameters.Theeffectsofinitialsludgeproteinsolution[1]tion,suchasbiodegradation,activat
