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甘露低聚糖铜(Ⅱ)配合物对尿素的吸附研究 Title:AdsorptionStudyofMannoseOligosaccharideCopper(II)ComplexonUrea Abstract: Thisresearchaimstoinvestigatetheadsorptionbehaviorofmannoseoligosaccharidecopper(II)complex(MOCC)onurea.Theadsorptionprocessandthefactorsinfluencingadsorptionwerestudiedindetail.TheresultsindicatethepotentialuseofMOCCasaneffectiveadsorbentforurearemoval,whichcouldhavesignificantapplicationsinwastewatertreatmentandenvironmentalremediation. 1.Introduction Ureaisawidelyusednitrogenfertilizerinagriculture,butitsexcessiveusecanleadtoenvironmentalproblems,suchaseutrophicationofwaterbodiesanddegradationofsoilquality.Therefore,thedevelopmentofefficientandcost-effectiveurearemovalmethodsisofgreatimportance.Adsorptionhasbeenrecognizedasaneffectiveapproachduetoitshighefficiencyandsimplicity.However,conventionaladsorbentshavelimitedadsorptioncapacityandselectivity. 2.ExperimentalMethodology 2.1SynthesisofMOCC Mannoseoligosaccharidecopper(II)complexwassynthesizedviaatwo-stepmethod.Briefly,mannoseoligosaccharidewasmodifiedtointroducefunctionalgroups,followedbytheadditionofcopper(II)ionstoformthecomplex. 2.2AdsorptionStudies AdsorptionexperimentswerecarriedouttoinvestigatetheadsorptionbehaviorofMOCConurea.Theeffectsofvariousparameters,includinginitialureaconcentration,pH,contacttime,andtemperature,ontheadsorptionprocesswereevaluated.Theadsorptionisothermsandkineticsweredetermined,andthethermodynamicparameterswerecalculated. 3.ResultsandDiscussion 3.1AdsorptionBehaviorofMOCConUrea TheadsorptionofureabyMOCCfollowedatypicalFreundlichisotherm,indicatingmultilayeradsorption.TheadsorptioncapacityofMOCCwasfoundtobesignificantlyhigherthanthatoftraditionaladsorbents,suchasactivatedcarbonandzeolites.ThehighadsorptioncapacityofMOCCcanbeattributedtothestrongcoordinationinteractionsbetweenMOCCandureamolecules. 3.2FactorsInfluencingAdsorption ThepHofthesolutionstronglyinfluencedtheadsorptionprocess.MOCCexhibitedthehighestadsorptioncapacityatpH7.0,indicatingtheimportanceofthesurfacechargeandioniza