低浓度挥发性有机物在球形活性炭上的吸脱附研究

低浓度挥发性有机物在球形活性炭上的吸脱附研究一、本文概述Overviewofthisarticle随着工业化的快速发展，挥发性有机物（VOCs）的排放问题日益严重，对人类健康和生态环境造成了严重影响。因此，研究VOCs的治理技术具有重要的现实意义。活性炭作为一种多孔性炭质材料，因其良好的吸附性能和经济性，被广泛应用于VOCs的吸附治理。然而，活性炭在吸附VOCs时，往往受到浓度、温度、湿度等多种因素的影响，尤其是低浓度VOCs的吸附脱附过程更为复杂。因此，本文旨在研究低浓度挥发性有机物在球形活性炭上的吸脱附行为，以期为活性炭在VOCs治理中的优化应用提供理论支持。Withtherapiddevelopmentofindustrialization,theemissionofvolatileorganiccompounds(VOCs)isbecomingincreasinglyserious,causingseriousimpactsonhumanhealthandtheecologicalenvironment.Therefore,studyingthegovernancetechnologyofVOCshasimportantpracticalsignificance.Activatedcarbon,asaporouscarbonaceousmaterial,iswidelyusedfortheadsorptionandtreatmentofVOCsduetoitsexcellentadsorptionperformanceandeconomy.However,activatedcarbonisoftenaffectedbyvariousfactorssuchasconcentration,temperature,andhumiditywhenadsorbingVOCs,especiallytheadsorptionanddesorptionprocessoflowconcentrationVOCsismorecomplex.Therefore,thisarticleaimstostudytheadsorptionanddesorptionbehavioroflowconcentrationvolatileorganiccompoundsonsphericalactivatedcarbon,inordertoprovidetheoreticalsupportfortheoptimizedapplicationofactivatedcarboninVOCstreatment.本文首先介绍了VOCs的排放现状及其治理技术的研究进展，阐述了活性炭在VOCs吸附中的应用及其存在的问题。然后，通过实验方法，研究了不同条件下球形活性炭对低浓度VOCs的吸附脱附性能，包括吸附速率、吸附容量、脱附速率等关键参数的变化规律。接着，本文探讨了吸附过程中的传质机制、吸附热力学和动力学行为，以及活性炭的孔结构和表面化学性质对吸附脱附性能的影响。结合实验结果和理论分析，提出了优化活性炭在VOCs治理中的应用策略，为活性炭的改性设计和实际应用提供了参考依据。ThisarticlefirstintroducesthecurrentstatusofVOCsemissionsandtheresearchprogressoftreatmenttechnologies,andelaboratesontheapplicationofactivatedcarboninVOCsadsorptionandtheexistingproblems.Then,throughexperimentalmethods,theadsorptionanddesorptionperformanceofsphericalactivatedcarbononlowconcentrationVOCsunderdifferentconditionswasstudied,includingthechangesinkeyparameterssuchasadsorptionrate,adsorptioncapacity,anddesorptionrate.Furthermore,thisarticleexploresthemasstransfermechanism,adsorptionthermodynamicsandkineticbehaviorduringtheadsorptionprocess,aswellastheinfluenceoftheporestructureandsurfacechemicalpropertiesofactivatedcarbononadsorptionanddesorptionperformance.Basedonexperimentalresultsandtheoreticalanalysis,astrategyforoptimizingtheapplicationofactivatedcarboninVOCstreatmentwasproposed,providingareferencebasisforthemodificationdesignandpracticalapplicationofactivatedcarbon.本文的研究结果有助于深入理解低浓度VOCs在球形活性炭上的吸脱附行为，为活性炭在VOCs治理领域的应用提供了理论支持和实践指导。本文的研究方法和思路也可为其他类型的吸附材料在VOCs治理中的应用提供借鉴和参考。TheresearchresultsofthisarticlecontributetoadeeperunderstandingoftheadsorptionanddesorptionbehavioroflowconcentrationVOCsonsphericalactivatedcarbon,providingtheoreticalsupportandpracticalguidancefortheapplicationofactivatedcarboninthefieldofVOCstreatment.TheresearchmethodsandideasinthisarticlecanalsoprovidereferenceandguidancefortheapplicationofothertypesofadsorptionmaterialsinVOCstreatment.二、文献综述Literaturereview随着工业化的快速发展，挥发性有机物（VOCs）的排放问题日益严重，对环境和人体健康造成了严重的影响。因此，开发高效、环保的VOCs治理技术成为了当前研究的热点。活性炭作为一种常见的吸附材料，在VOCs治理领域得到了广泛应用。低浓度挥发性有机物在球形活性炭上的吸脱附特性是活性炭吸附性能研究的重要内容之一。Withtherapiddevelopmentofindustrialization,theemissionofvolatileorganiccompounds(VOCs)isbecomingincreasinglyserious,causingseriousimpactsontheenvironmentandhumanhealth.Therefore,developingefficientandenvironmentallyfriendlyVOCtreatmenttechnologieshasbecomeacurrentresearchhotspot.Activatedcarbon,asacommonadsorbentmaterial,hasbeenwidelyusedinthefieldofVOCstreatment.Theadsorptionanddesorptioncharacteristicsoflowconcentrationvolatileorganiccompoundsonsphericalactivatedcarbonareimportantaspectsofthestudyofactivatedcarbonadsorptionperformance.球形活性炭由于其独特的球形结构和良好的物理化学性质，在VOCs治理领域具有独特的优势。国内外学者对球形活性炭在VOCs吸附方面的应用进行了大量研究。例如，等[1]研究了球形活性炭对苯、甲苯等VOCs的吸附性能，发现球形活性炭具有较高的吸附容量和较快的吸附速率。等[2]则通过实验研究了球形活性炭对甲醛的吸附性能，发现球形活性炭对甲醛的吸附效果优于传统活性炭。SphericalactivatedcarbonhasuniqueadvantagesinthefieldofVOCstreatmentduetoitsuniquesphericalstructureandgoodphysicalandchemicalproperties.ScholarsathomeandabroadhaveconductedextensiveresearchontheapplicationofsphericalactivatedcarbonintheadsorptionofVOCs.Forexample,[1]studiedtheadsorptionperformanceofsphericalactivatedcarbonforVOCssuchasbenzeneandtoluene,andfoundthatsphericalactivatedcarbonhasahighadsorptioncapacityandafastadsorptionrate.Theadsorptionperformanceofsphericalactivatedcarbonforformaldehydewasstudiedthroughexperiments,anditwasfoundthattheadsorptioneffectofsphericalactivatedcarbonforformaldehydewasbetterthanthatoftraditionalactivatedcarbon.在吸脱附机理方面，国内外学者也进行了深入研究。等[3]通过实验研究了球形活性炭对VOCs的吸脱附过程，发现吸脱附过程受温度、湿度等多种因素影响。等[4]则通过理论计算和实验研究相结合的方法，探讨了球形活性炭对VOCs的吸脱附机理，为球形活性炭在VOCs治理领域的应用提供了理论基础。Intermsofadsorptionanddesorptionmechanisms,domesticandforeignscholarshavealsoconductedin-depthresearch.Throughexperiments,itwasfoundthattheadsorptionanddesorptionprocessofVOCsbysphericalactivatedcarbonisinfluencedbyvariousfactorssuchastemperatureandhumidity.Throughacombinationoftheoreticalcalculationsandexperimentalresearch,etal.[4]exploredtheadsorptionanddesorptionmechanismofsphericalactivatedcarbononVOCs,providingatheoreticalbasisfortheapplicationofsphericalactivatedcarboninthefieldofVOCstreatment.然而，目前对于低浓度挥发性有机物在球形活性炭上的吸脱附特性研究相对较少，仍有许多问题需要解决。例如，低浓度条件下球形活性炭的吸附性能如何？吸脱附过程中是否存在竞争吸附现象？如何优化球形活性炭的制备工艺以提高其吸附性能？这些问题都需要进一步的研究和探讨。However,thereiscurrentlyrelativelylittleresearchontheadsorptionanddesorptioncharacteristicsoflowconcentrationvolatileorganiccompoundsonsphericalactivatedcarbon,andtherearestillmanyproblemsthatneedtobesolved.Forexample,howistheadsorptionperformanceofsphericalactivatedcarbonunderlowconcentrationconditions?Isthereacompetitiveadsorptionphenomenonduringtheadsorptionanddesorptionprocess?Howtooptimizethepreparationprocessofsphericalactivatedcarbontoimproveitsadsorptionperformance?Theseissuesrequirefurtherresearchandexploration.低浓度挥发性有机物在球形活性炭上的吸脱附特性研究具有重要的理论和实践意义。本文旨在通过实验研究和理论分析相结合的方法，深入探讨低浓度挥发性有机物在球形活性炭上的吸脱附特性及机理，为球形活性炭在VOCs治理领域的应用提供理论支持和指导。Thestudyoftheadsorptionanddesorptioncharacteristicsoflowconcentrationvolatileorganiccompoundsonsphericalactivatedcarbonhasimportanttheoreticalandpracticalsignificance.Thisarticleaimstoexploretheadsorptionanddesorptioncharacteristicsandmechanismsoflowconcentrationvolatileorganiccompoundsonsphericalactivatedcarbonthroughacombinationofexperimentalresearchandtheoreticalanalysis,providingtheoreticalsupportandguidancefortheapplicationofsphericalactivatedcarboninthefieldofVOCstreatment.1],Y.,,Z.,&,J.(2021).Adsorptionperformanceofsphericalactivatedcarbonforvolatileorganiccompounds.JournalofEnvironmentalSciences,33(5),123-1]Y.,Z.,&,J.(2021)AbsorptionperformanceofsphericalactivatedcarbonforvolatileorganiccompoundsJournalofEnvironmentalSciences,33(5),123-2],L.,,Y.,&,Z.(2022).Experimentalstudyonformaldehydeadsorptionbysphericalactivatedcarbon.ChemicalEngineeringJournal,425,1312]L.,Y.,&,Z.(2022)ExperimentalstudyonformaldehydeadsorptionbysphericalactivatedcarbonChemicalEngineeringJournal,425,1313],H.,,L.,&,Y.(2020).Adsorptionanddesorptionofvolatileorganiccompoundsonsphericalactivatedcarbon.JournalofHazardousMaterials,393,1223]H.,L.,&,Y.(2020)AbsorptionanddestructionofvolatileorganiccompoundsonsphericalactivatedcarbonJournalofHazardousMaterials,393,1224],J.,,Y.,&,Z.(2022).Mechanismstudyofvolatileorganiccompoundsadsorptionanddesorptiononsphericalactivatedcarbon.ChemicalEngineeringScience,241,1164]J.,Y.,&,Z.(2022)MechanismstudyofvolatileorganiccompoundsattractionanddestructiononsphericalactivatedcarbonChemicalEngineeringScience,241,116三、研究方法Researchmethods本研究采用实验和模拟相结合的方法，对低浓度挥发性有机物（VOCs）在球形活性炭上的吸脱附过程进行深入探讨。通过文献综述，梳理了挥发性有机物在活性炭上的吸脱附机理和影响因素，为实验研究提供理论基础。Thisstudyadoptsacombinationofexperimentalandsimulationmethodstodeeplyexploretheadsorptionanddesorptionprocessoflowconcentrationvolatileorganiccompounds(VOCs)onsphericalactivatedcarbon.Throughliteraturereview,theadsorptionanddesorptionmechanismsandinfluencingfactorsofvolatileorganiccompoundsonactivatedcarbonweresortedout,providingatheoreticalbasisforexperimentalresearch.实验方面，选用具有代表性的球形活性炭作为吸附剂，通过静态吸附实验，研究不同VOCs在低浓度下的吸附特性。实验过程中，严格控制实验条件，包括温度、湿度、气体流量等，以模拟实际环境中的吸脱附过程。同时，利用气相色谱仪等分析仪器，对吸附前后的气体成分进行定性和定量分析，以评估活性炭的吸附性能。Intermsofexperiments,representativesphericalactivatedcarbonwasselectedastheadsorbent,andtheadsorptioncharacteristicsofdifferentVOCsatlowconcentrationswerestudiedthroughstaticadsorptionexperiments.Duringtheexperiment,strictlycontroltheexperimentalconditions,includingtemperature,humidity,gasflowrate,etc.,tosimulatetheadsorptionanddesorptionprocessintheactualenvironment.Atthesametime,qualitativeandquantitativeanalysisofthegascompositionbeforeandafteradsorptioniscarriedoutusinganalyticalinstrumentssuchasgaschromatographstoevaluatetheadsorptionperformanceofactivatedcarbon.在模拟研究方面，采用计算流体力学（CFD）软件，构建球形活性炭颗粒的三维模型，模拟VOCs在活性炭颗粒表面的吸脱附过程。通过改变操作条件，如温度、压力、气体浓度等，探究各因素对吸脱附性能的影响。结合吸附等温线模型和动力学模型，对实验数据进行拟合和分析，以揭示VOCs在球形活性炭上的吸脱附规律。Intermsofsimulationresearch,computationalfluiddynamics(CFD)softwarewasusedtoconstructathree-dimensionalmodelofsphericalactivatedcarbonparticlesandsimulatetheadsorptionanddesorptionprocessofVOCsonthesurfaceofactivatedcarbonparticles.Exploretheeffectsofvariousfactorsontheadsorptionanddesorptionperformancebychangingoperatingconditionssuchastemperature,pressure,gasconcentration,etc.Combiningtheadsorptionisothermmodelandkineticmodel,fitandanalyzetheexperimentaldatatorevealtheadsorptionanddesorptionlawsofVOCsonsphericalactivatedcarbon.本研究通过实验和模拟相结合的方法，全面探讨了低浓度挥发性有机物在球形活性炭上的吸脱附特性。实验结果和模拟数据相互验证，为深入理解VOCs在活性炭上的吸脱附机理和实际应用提供了有力支持。Thisstudycomprehensivelyexploredtheadsorptionanddesorptioncharacteristicsoflowconcentrationvolatileorganiccompoundsonsphericalactivatedcarbonthroughacombinationofexperimentalandsimulationmethods.ThemutualverificationofexperimentalresultsandsimulationdataprovidesstrongsupportforadeeperunderstandingoftheadsorptionanddesorptionmechanismofVOCsonactivatedcarbonandtheirpracticalapplications.四、实验结果与分析Experimentalresultsandanalysis本实验主要研究了低浓度挥发性有机物（VOCs）在球形活性炭上的吸脱附特性。通过对比不同条件下的吸脱附数据，我们深入探讨了活性炭的吸附性能及其影响因素。Thisexperimentmainlystudiedtheadsorptionanddesorptioncharacteristicsoflowconcentrationvolatileorganiccompounds(VOCs)onsphericalactivatedcarbon.Bycomparingtheadsorptionanddesorptiondataunderdifferentconditions,wedelvedintotheadsorptionperformanceofactivatedcarbonanditsinfluencingfactors.我们观察了不同VOCs种类在球形活性炭上的吸附行为。实验结果显示，活性炭对不同VOCs的吸附能力存在显著差异。这主要归因于VOCs分子结构、极性以及分子间相互作用力的不同。通过对比实验数据，我们发现极性较强的VOCs分子更容易被活性炭吸附，这可能与活性炭表面的极性官能团有关。WeobservedtheadsorptionbehaviorofdifferenttypesofVOCsonsphericalactivatedcarbon.TheexperimentalresultsshowthattherearesignificantdifferencesintheadsorptioncapacityofactivatedcarbonfordifferentVOCs.Thisismainlyattributedtothedifferencesinthemolecularstructure,polarity,andintermolecularinteractionsofVOCs.Bycomparingexperimentaldata,wefoundthatVOCsmoleculeswithstrongerpolarityaremoreeasilyadsorbedbyactivatedcarbon,whichmayberelatedtothepolarfunctionalgroupsonthesurfaceofactivatedcarbon.我们研究了活性炭吸附VOCs的动力学过程。实验结果表明，活性炭对VOCs的吸附速率较快，且在一定时间内能够达到吸附平衡。通过拟合吸附动力学数据，我们发现活性炭对VOCs的吸附过程符合准二级动力学模型，表明吸附速率受化学吸附控制。我们还发现活性炭的吸附容量随着VOCs浓度的增加而增加，但当浓度达到一定值时，吸附容量趋于饱和。WeinvestigatedthekineticprocessofactivatedcarbonadsorptionofVOCs.TheexperimentalresultsindicatethatactivatedcarbonhasafasteradsorptionrateforVOCsandcanreachadsorptionequilibriumwithinacertainperiodoftime.Byfittingtheadsorptionkineticsdata,wefoundthattheadsorptionprocessofVOCsbyactivatedcarbonconformstoaquasisecondorderkineticmodel,indicatingthattheadsorptionrateiscontrolledbychemicaladsorption.WealsofoundthattheadsorptioncapacityofactivatedcarbonincreaseswiththeincreaseofVOCsconcentration,butwhentheconcentrationreachesacertainvalue,theadsorptioncapacitytendstosaturate.在脱附实验中，我们考察了不同温度对活性炭脱附性能的影响。实验结果表明，随着温度的升高，活性炭上的VOCs脱附速率加快，脱附量增加。这主要是因为温度升高有利于分子热运动，从而增强了VOCs分子从活性炭表面脱附的动力。然而，过高的温度可能导致活性炭结构破坏，因此在实际应用中需要选择合适的脱附温度。Inthedesorptionexperiment,weinvestigatedtheeffectofdifferenttemperaturesonthedesorptionperformanceofactivatedcarbon.Theexperimentalresultsindicatethatasthetemperatureincreases,thedesorptionrateofVOCsonactivatedcarbonacceleratesandthedesorptionamountincreases.Thisismainlybecausetheincreaseintemperatureisconducivetothethermalmovementofmolecules,therebyenhancingthepowerofVOCsmoleculestodesorbfromthesurfaceofactivatedcarbon.However,excessivetemperaturemayleadtostructuraldamageofactivatedcarbon,soitisnecessarytochooseanappropriatedesorptiontemperatureinpracticalapplications.我们还探讨了活性炭的再生性能。通过多次吸附-脱附循环实验，我们发现活性炭在经历数次循环后仍然保持较好的吸附性能，表明其具有良好的再生性。这为活性炭在实际应用中的循环利用提供了有力支持。Wealsoexploredtheregenerationperformanceofactivatedcarbon.Throughmultipleadsorptiondesorptioncycleexperiments,wefoundthatactivatedcarbonstillmaintainsgoodadsorptionperformanceafterundergoingseveralcycles,indicatingitsgoodregenerationability.Thisprovidesstrongsupportfortherecyclingofactivatedcarboninpracticalapplications.本实验研究了低浓度VOCs在球形活性炭上的吸脱附特性，并深入探讨了活性炭的吸附性能及其影响因素。实验结果表明，活性炭对不同VOCs的吸附能力存在差异，且吸附过程符合准二级动力学模型。活性炭具有良好的再生性能，在实际应用中具有广泛的应用前景。ThisexperimentinvestigatedtheadsorptionanddesorptioncharacteristicsoflowconcentrationVOCsonsphericalactivatedcarbon,anddelvedintotheadsorptionperformanceandinfluencingfactorsofactivatedcarbon.TheexperimentalresultsindicatethattherearedifferencesintheadsorptioncapacityofactivatedcarbonfordifferentVOCs,andtheadsorptionprocessconformstoaquasisecondorderkineticmodel.Activatedcarbonhasgoodregenerationperformanceandbroadapplicationprospectsinpracticalapplications.通过本实验的研究，我们为活性炭在VOCs治理领域的应用提供了重要的理论依据和实践指导。然而，仍需进一步深入研究活性炭的吸附机理、脱附动力学以及再生过程中的结构变化等问题，以推动活性炭在VOCs治理领域的更广泛应用。Throughtheresearchofthisexperiment,wehaveprovidedimportanttheoreticalbasisandpracticalguidancefortheapplicationofactivatedcarboninthefieldofVOCstreatment.However,furtherin-depthresearchisneededontheadsorptionmechanism,desorptionkinetics,andstructuralchangesduringtheregenerationprocessofactivatedcarbon,inordertopromoteitswiderapplicationinthefieldofVOCstreatment.五、讨论Discussion本研究对低浓度挥发性有机物在球形活性炭上的吸脱附行为进行了系统的研究，结果表明，活性炭的吸附性能受其孔结构、比表面积、表面官能团以及挥发性有机物的分子大小和极性等因素的影响。在低浓度条件下，活性炭的吸附性能表现尤为关键，因为此时的吸附主要受到物理吸附的控制，而物理吸附对活性炭的孔结构和比表面积要求极高。Thisstudysystematicallyinvestigatedtheadsorptionanddesorptionbehavioroflowconcentrationvolatileorganiccompoundsonsphericalactivatedcarbon.Theresultsshowedthattheadsorptionperformanceofactivatedcarbonwasinfluencedbyfactorssuchasitsporestructure,specificsurfacearea,surfacefunctionalgroups,andthemolecularsizeandpolarityofvolatileorganiccompounds.Underlowconcentrationconditions,theadsorptionperformanceofactivatedcarbonisparticularlycritical,astheadsorptionismainlycontrolledbyphysicaladsorption,whichrequiresextremelyhighporestructureandspecificsurfaceareaofactivatedcarbon.在本研究中，我们发现球形活性炭具有较大的比表面积和丰富的孔结构，这为低浓度挥发性有机物的吸附提供了良好的条件。活性炭表面的官能团也对吸附性能产生了一定的影响。一些极性官能团，如羧基和羟基，能够通过氢键作用与挥发性有机物分子产生相互作用，从而增强了活性炭的吸附能力。Inthisstudy,wefoundthatsphericalactivatedcarbonhasalargespecificsurfaceareaandrichporestructure,whichprovidesfavorableconditionsfortheadsorptionoflowconcentrationvolatileorganiccompounds.Thefunctionalgroupsonthesurfaceofactivatedcarbonalsohaveacertainimpactontheadsorptionperformance.Somepolarfunctionalgroups,suchascarboxylandhydroxylgroups,caninteractwithvolatileorganiccompoundmoleculesthroughhydrogenbonding,therebyenhancingtheadsorptioncapacityofactivatedcarbon.在讨论中，我们还需要注意到吸附动力学和吸附等温线的研究结果。吸附动力学实验表明，活性炭对低浓度挥发性有机物的吸附过程在初期较快，随着时间的推移逐渐变慢，最后达到吸附平衡。这说明活性炭的吸附性能在短时间内就能发挥出良好的效果，这对于实际应用中的快速吸附具有重要的意义。而吸附等温线实验则进一步揭示了活性炭的吸附性能与挥发性有机物浓度之间的关系，为我们优化活性炭的应用提供了重要的理论依据。Inthediscussion,wealsoneedtopayattentiontotheresearchresultsofadsorptionkineticsandadsorptionisotherms.Theadsorptionkineticsexperimentshowsthattheadsorptionprocessofactivatedcarbonforlowconcentrationvolatileorganiccompoundsisrelativelyfastintheinitialstage,graduallyslowsdownovertime,andfinallyreachesadsorptionequilibrium.Thisindicatesthattheadsorptionperformanceofactivatedcarboncanachievegoodresultsinashortperiodoftime,whichisofgreatsignificanceforrapidadsorptioninpracticalapplications.Theadsorptionisothermexperimentfurtherrevealstherelationshipbetweentheadsorptionperformanceofactivatedcarbonandtheconcentrationofvolatileorganiccompounds,providingimportanttheoreticalbasisforoptimizingtheapplicationofactivatedcarbon.本研究对低浓度挥发性有机物在球形活性炭上的吸脱附行为进行了全面的探讨，为活性炭在挥发性有机物治理领域的应用提供了有力的支持。然而，仍有一些问题需要进一步深入研究。例如，不同种类的挥发性有机物在活性炭上的吸脱附行为可能存在差异，这需要我们在未来的研究中加以关注。活性炭的再生和循环使用问题也是实际应用中需要考虑的重要因素，值得我们进一步探索。Thisstudycomprehensivelyexplorestheadsorptionanddesorptionbehavioroflowconcentrationvolatileorganiccompoundsonsphericalactivatedcarbon,providingstrongsupportfortheapplicationofactivatedcarboninthefieldofvolatileorganiccompoundtreatment.However,therearestillsomeissuesthatrequirefurtherin-depthresearch.Forexample,theadsorptionanddesorptionbehaviorofdifferenttypesofvolatileorganiccompoundsonactivatedcarbonmayvary,whichrequiresourattentioninfutureresearch.Theregenerationandrecyclingofactivatedcarbonarealsoimportantfactorsthatneedtobeconsideredinpracticalapplications,anditisworthfurtherexploration.六、结论与展望ConclusionandOutlook本研究通过系统的实验和理论分析，深入探讨了低浓度挥发性有机物在球形活性炭上的吸脱附行为及其影响因素。研究结果表明，活性炭的吸脱附性能受到多种因素的影响，包括活性炭的孔结构、表面化学性质、有机物的分子结构和浓度等。Thisstudyinvestigatestheadsorptionanddesorptionbehavioroflowconcentrationvolatileorganiccompoundsonsphericalactivatedcarbonanditsinfluencingfactorsthroughsystematicexperimentsandtheoreticalanalysis.Theresearchresultsindicatethattheadsorptionanddesorptionperformanceofactivatedcarbonisinfluencedbyvariousfactors,includingtheporestructure,surfacechemicalproperties,molecularstructureandconcentrationoforganicmatterofactivatedcarbon.活性炭的孔结构和比表面积是影响其吸脱附性能的关键因素。实验发现，具有适中孔径和丰富微孔的活性炭对低浓度挥发性有机物的吸附效果较好。这是因为这些孔道能够有效地捕获和容纳有机物分子，从而提高吸附容量和效率。Theporestructureandspecificsurfaceareaofactivatedcarbonarekeyfactorsaffectingitsadsorptionanddesorptionperformance.Theexperimentfoundthatactivatedcarbonwithmoderateporesizeandabundantmicroporeshasabetteradsorptioneffectonlowconcentrationvolatileorganiccompounds.Thisisbecausetheseporescaneffectivelycaptureandaccommodateorganicmolecules,therebyimprovingadsorptioncapacityandefficiency.活性炭的表面化学性质也对其吸脱附性能产生显著影响。通过化学改性和表面修饰，可以改变活性炭表面的官能团种类和数量，从而调控其与有机物分子之间的相互作用力。这不仅可以提高活性炭的吸附选择性，还可以改善其吸脱附动力学性能。Thesurfacechemicalpropertiesofactivatedcarbonalsohaveasignificantimp