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1、TheresearchontheadsorptioneffectonmetalionsbyimmobilizedmarinealgaeActaOceanologicaSinica2006,Vo1.25,No.2,P.153-158http://www.oceanpress.com.cnE-mail:hyxbe@263.netTheresearchontheadsorptioneffectonmetalionsiilip'lip''■●'DV
2、mmob
3、lizenmarlnealgaeWANGXian,QIUHaiyuan',CAIZhenzhen',CHENLida
4、n,ZHENGShenghua',HUANGZhiwei1.CollegeofOceanogrophyandEnvironmentalScience,XiamenUniversity,Xiamen361005,ChinaReceived2August2005;accepted3November2005AbstractTheprocessofadsorptionofCu".Cd"byimmobilizedmarinealgaewasinvestigated.itcanbenotedfromtheresultsthat,theprocessforbiosorptiono
5、fheavymetals(copper,cadmium)byimmobilizedLaminariajaponicacanbedescribedbytheBanermmode1.Accordingtothemode1.theadsorptionrateconstantcalculatedwas0.1078and0.03028min一forCuandCd"respectively.TheexperimentalbiosorptionequilibriumdataforCu2andCdwereingoodagreementwiththosecalculatedbythe
6、Langmuirmode1.Themaximumuptakecapacitycalculatedwas83.3and112.4mg/gforCuandCdaccordingtotheLangmuirmode1.respectively.TheappetencyofLaminariajaponicatoCuwasbe~erthanCd.Keywords:marinealgae,desorptioneffect,metalion,immobilization1IntroductionBiosorptionisaprocessthatutilizesbiomasstoab
7、sorbheavymetalsandisparticularlyusefulfortheremovalofcontaminantsfromindustr/ale用uents.Inartificialorganismscannotbeusedinpracticalpro—ductionbecauseoftheirlowdensity,lowintensity,andsmalldiameter.Immobilizationbeforeusingcanin—creasetheirchemicalstabilizationandmechanicalin—tensity,an
8、dconsumedlyreducethedepletionduringtheadsorption--desorptionprocess,andalsocanpro—longtheusingperiods,makeiteasiertoberecovered.Themethodstoimmobilizethecellsoforganismsareofvariouskinds.Anytechnologythatcanrestrictthefreeflowofbiologicalcellscanbeusedintheimmobilizationofbiologicalsor
9、bents.Separationmethodshavebeenusedbyresearchersindifferentcountries.Thesemethodscanbebrokenupintofour+Correspondingauthor,E-mail:wangxian@jingxian.xmu.edu.cntypes:adsorption,covalentconjugation,crosslinking,andembedding(Tian,2000;Ma,1990).Theagentsusedinthecrosslinkingincludemethano
