改性小麦秸杆纤维素球对苯酚吸附性能研究冯利

:2009-09-07　　　:2009-10-23:(07ZA124)＊:　,,,.第26卷第4期Vol.26　No.4分析科学学报JOURNALOFANALYTICALSCIENCE2010年8月Aug.2010:1006-6144(2010)04-0451-04冯　利＊1,陈中兰2,杨显俊1,王　耀2,唐　婧3,王　成1,张　涛1(1.,621700;2.,,637501;3.,635000)　:本文利用制得的改性小麦秸秆纤维素球对苯酚吸附性能进行了研究。实验结果表明:改性小麦秸秆纤维素球对苯酚的吸附30min内基本达到平衡,吸附剂对苯酚吸附量随起始质量浓度的增加而增加,且呈线性关系;在T=298K、pH=5.0时,吸附剂对苯酚的吸附量达到最大。在一定浓度、温度条件下,改性小麦秸秆纤维素球吸附苯酚的过程符合Freundlich吸附模型。吸附再生实验表明,改性小麦秸秆纤维素球对苯酚有较好的吸附再生能力。并对印染废水中的苯酚进行了实际的吸附测定。:改性小麦秸秆纤维素;苯酚;吸附;印染废水:O657.8　　　:A,。[1]。“”。、,。,、[2-6],,。,、、、。,[7],、、pH(WS-MB-TEAHC),,WS-MB-TEAHC。1　1.1　UV-Vis2550(,);SHZ-D(Ⅲ)();GZX-9140ME();DF-101B();();SHZ-82()。(WS-MB-TEAHC)。;,18.3MΨ·cm。1.2　1.2.1　WS-MB-TEAHC　,λmax=269nm。WS-MB-TEAHC0.05g,、、pH,,,。(1):451第4期冯　利等:改性小麦秸杆纤维素球对苯酚吸附性能研究第26卷Q=(c0-ce)×VW(1),Q—(mg/g),c0、ce—(mg/mL),V—(mL),W—(g)。1.2.3　WS-MB-TEAHC　3d,,,,。1.2.1,0.05gWS-MB-TEAHC,100mL,pH=5.0,25℃30min。。WS-MB-TEAHC50%,。2　2.1　,。,,10～20min,WS-MB-TEAHC,30min。30min。2.2　1WS-MB-TEAHC。WS-MB-TEAHC。WS-MB-TEAHC,。2,,WS-MB-TEAHC,。298K。1　Fig.1　Effectofdifferentinitialphenolmasscon-centrationonadsorptionquantity2　Fig.2　Theeffectoftemperatureonadsorptionquantityofphenol2.3　pH3　pHFig.3　EffectofpHonphenoladsorptionquantity3,pH。(pKa=9.95),pH,H+,,,,pH。2.4　、pH,0.05gWS-MB-TEAHC100.00mLpH=5.0,Te=298K30min。ce,Qe,InQeInce,Freundlihc;ce/Qece,Lnagmuir。1。1,、WS-MB-TEAHCFreundlihc,Lnagmuir(R2=0.72676)。,WS-MB-TEAHC452第4期分析科学学报第26卷,。Freundlichn1,。1　FreundlichTable1　FreundlichadsorptionisothermsequationforphenolTemperatureMatchinginterval(mg/L)AdsorptionisothermequationKfnQmKLR2298K0～50lnQe=1.7255+0.73983lnce5.61571.35170.9956298K0～50ce/Qe=0.24838+0.00818ce122.250.03290.72672.5　WS-MB-TEAHC50%,,2。2,,WS-MB-TEAHC80%,,,WS-MB-TEAHC。2　Table2　DesorptionresultsProcessingtimesAdsorptionefficiency(%)Desorptionefficiency(%)Thefirsttime94.890.85Thesecondtime93.287.78Thethirdtime91.084.05Theforthtime89.581.402.6　90mL250mL,,100mL,1.2.3,,3。3,88.59%～93.98%,。,。3　Table3　AnalyticalresultsandtherecoverytestNo.CompositionPhenolcontentinwatersample(mg/L)Added(mg/L)Measured(mg/L)Recovery(%)1Phenol1.02561.011.959293.982Phenol1.11461.102.089188.593Phenol1.20011.02.097489.733　,WS-MB-TEAHC。-,88.59%～93.98%。,。:[1]　YANJi-chang().EnvironmentalAnalysis()[M].Beijing():ChemicalIndustryPress(),2002.[2]　NaffrechouxE,ChanouxS,PetrierC,SuptilJ.UltrasonicsSonochemistry[J],2000,7(4):2550.[3]　YukihikoMatsumura,TaroUrase,KazuoYamamoto,TeppeiNunoura.TheJournalofSupercriticalFluids[J],2002,22(2):149.[4]　ZHOUTong(　),WUChun-de(),WANGXiao-lei(),LUOJia(　).JournalofAnalyticalSci-ence()[J],2005,21(3):152.[5]　JimmyCYu,TYKwong,QLuo,CAIZong-wei.Chemosphere[J],2006,65(3):390.453第4期冯　利等:改性小麦秸杆纤维素球对苯酚吸附性能研究第26卷[6]　BussetC,MazellierP,SarakhaM,DeLaatJ.JournalofPhotochemistryandPhotobiologyA:Chemistry[J],2007,185(2-3):127.[7]　YINXiao-hong().PrepartionofAnionExchangerofLellulosebyRejectamentaofAgrilulturesandApplilation()[D].Xi'an():NorthwesternUniversity(),2005.StudyonAdsorptionPerformanceofModifiedWheatStrawCelluloseSphereforPhenolFENGLi＊1,CHENZhong-lan2,YANGXian-jun1,WANGYao2,TANGJing3,WANGCheng1,ZHANGTao1(1.JiangyouEnvironmentalProtectionBureau,Mianyang621700;2.SichuanKeyLaboratoriesofChemicalApplicationandPollutionControlTechnology,WestNormalUniversity,Nanchong637501;3.ChemistryandChemicalEngineeringDepartment,SichuanArtsandScienceUniversity,Dazhou635000)Abstract:Theadsorptionbehaviorofphenolonmodifiedwheatstrawcellulosewasinvestigatedinthispaper.Theresultsshowedthattheadsorptionequilibriumcouldbeachievedwithin30min.Theadsorptionquantitywaslinearlyincreasedwiththeincreaseoftheinitialconcentrationofphenolandreachedthemaximumatatemperatureof298KandpH=5.0.TheadsorptionbehaviorobeyedtheFreundlichisothermadsorptionmodelundercertainconcentrationandtemperature.Furthermore,therenewableexperimentsshowedthatthemodifiedwheatstrawcellulosehadgoodrenewableadsorptioncapacityforphenol.Keywords:Modifiedwheatstrawcellulose;Phenol;Adsorption;Printinganddyeingwastewater454