二氧化钛氧化石墨烯复合水凝胶处理造纸废水研究

··。*211167TN、GOH-TN-rGO。H-TN-rGOpH、、、H-TN-rGOCODCr。pH7.8930℃10hH-TN-rGO0.5g/LCODCr355mg/L13.6mg/L98.8%。H-TN-rGOLang-muirKL=0.47L/mgqm=112.35mg/gＲ2=0.9975。X793ADOI10.11980/j.issn.0254-508X.2018.12.0042018-07-18No.51522805。*。StudyonPapermakingWastewaterTreatmentbyCompositeHydrogelsofTitaniumDioxideandGrapheneOxideZHANGChang-FeiZHENGKai*LIQian-junZHANGFangNanjingInstituteofTechnologyNanjingJiangsuProvince211167*[e-mail]drogelsoftitaniananoparticlesandgrapheneoxidewerepreparedbyhydrothermalsynthesis.Theadsorptionex-perimentofpretreatedpapermakingwastewaterbycompositehydrogelswascarriedout.TheeffectsofpHvaluetemperatureadsorptiontimeandtheinputamountofhydrogelsontheremovalrateofCODCrofthepapermakingwastewaterwerestudiedsoastoobtaintheappropriateadsorptionconditions.TheresultsshowedthatpHvalue7.89temperature30℃adsorptiontime10htheinputamountofhydrogels0.5g/LtheCODCrofwastewaterdecreasedfrom355mg/Lto13.6mg/LandCODCrremovalratereached98.8%.TheadsorptionwassuitforLangmuirmodelandKL=0.47L/mgqm=112.35mg/gＲ2=0.9975。Keywordspapermakingwastewatergraphenetitaniananoparticleshydrogelsadsorptionmodel、、、1-2。、3。、、4-5。TiO26-7。、8-9。10Ni2%Ni2%TiO2CODCr100%83.4%。11、、CFTiO2CFTiO2pH4、0.8g/L、40minCODCr88.9%·12·《》2018371295.2%。12TiO2-0.05%2hCODCr210mg/L43.0mg/L。TN、GOH-TN-rGOCODCrH-TN-rGO。11.1TN≥98.0%VC≥98.0%GO≥98.0%。1。1pHCODCr/mg·L－1SS/mg·L－1/6.35355114196GF105SHB-ⅢSSK5200HHH-25mL。CODCrGB11914—1989SSGB/T11901—1989GB/T11903—1989。1.21.0gGO500mL、20℃36hGO。200mLGO250mLTN0.40g24hGOTN。10mL25mL140mg/LVC1mL90℃12hH-TN-rGO。H-rGOTN。1.3SEMTEM1a、1c1eH-TN-rGO、H-rGOTNSEM1a、1c1e。1bH-TN-rGOTEMTNGO。1dH-rGO。1.4CODCrpHH-TN-rGO1H-TN-rGO、H-rGOTNSEMTEM·22·ChinaPulp＆PaperVol.37No.122018CODCr。CODCr12。qt=C0－CtV/m1η=C0－Ct/C0·100%2qttH-TN-rGOCODCrmg/gC0CODCrmg/LCtCODCrmg/LVLmH-TN-rGOgηCODCr%。22.1H-TN-rGOCODCr355、250、100mg/L100mLpH7.89、30℃10hCODCrCODCr2。H-TN-rGO0.5mg/LCODCr355、250、100mg/LCODCr98.8%、99.3%99.1%H-TN-rGOCODCr。2H-TN-rGOCODCr2.2pHCODCr355、250、100mg/L100mLpHH-TN-rGO0.5mg/L30℃10hCODCrCODCr3。3H-TN-rGOCODCrpH7.89～8.87pH7.89CODCr355、250、100mg/L3CODCr98%。2.3CODCr355、250、100mg/L100mLpH7.89H-TN-rGO0.5mg/L10hCODCrCODCr4。4H-TN-rGOCODCr25～35℃3pHCODCr4CODCrH-TN-rGOCODCr。30℃CODCr。2.4CODCr355、250、100mg/L100mLpH7.89H-TN-rGO0.5mg/L30℃CODCrCODCr5。5H-TN-rGOCODCr6hCODCr93.4%10hCODCr98.8%。CODCr10h。5CODCr2.5H-rGOH-TN-rGOCODCr355mg/L2pH7.89、30℃H-rGOH-TN-rGO0.5mg/L10h2CODCrH-TN-rGOH-rGOCODCr98.8%76.5%·32·《》201837126。TNTNH-rGOH-TN-rGO。6H-rGOH-TN-rGOCODCr2.6LangmuirH-TN-rGOLangmuir3。Ceqe=Ceqm+1KLqm3qeH-TN-rGOCODCrmg/gCeCODCrmg/LqmKLLangmuir。H-TN-rGOLang-muirKL=0.47L/mgqm=112.35mg/gＲ2=0.9975Langmuir7。7H-TN-rGOCODCrLangmuir3TN、GOH-TN-rGOCODCr。3.1TNGO。3.2H-TN-rGOCODCrH-TN-rGO0.5mg/L、pH7.89、30℃、10hCODCr98.8%。3.3H-rGOCODCr76.5%H-TN-rGOCODCr22.3。3.4H-TN-rGOLangmuirKL=0.47L/mgqm=112.35mg/gＲ2=0.9975。1WANGXiao-congGUOXiao-weiHUWen-feietal．AdvancedTreatmentofPulpingandPapermakingWastewaterJ．ChinaPulp＆Paper2012311245．．J．2012311245．2LIAOYi-qiangLUZe-xiangZHENGDe-yongetal．PreparationofModifiedStarchFlocculantandItsApplicationinPaperMillWastewaterTreatmentJ．ChinaPulp＆Paper201231234．．J．201231234．3YuanGaoYanLiLiangZhangetal．AdsorptionandremovaloftetracyclineantibioticsfromaqueoussolutionbygrapheneoxideJ．JournalofColloidandInterfaceScience2012368540．4LiangliangJiWeiChenLinDuanetal．Mechanismsforstrongad-sorptionoftetracyclinetocarbonnanotubesAcomparativestudyu-singactivatedcarbonandgraphiteasadsorbentsJ．Environ．Sci．Technol20094372322．5LiangliangJiWeiChenJunBietal．Adsorptionoftetracyclineonsingle-walledandmulti-walledcarbonnanotubesasaffectedbyaque-oussolutionchemistryJ．EnvironmentalToxicologyandChemistry201029122713．6ZhaohuiLiLauraSchulzCarenAckleyetal．Adsorptionoftetra-cyclineonkaolinitewithpH-dependentsurfacechargesJ．JournalofColloidandInterfaceScience2010351254．7YanpingZhaoXueyuanGuShiyinLietal．Insightsintotetracy-clineadsorptionontokaoliniteandmontmorilloniteexperimentsandmodelingJ．EnvironSciPollutＲes．20152217031．8TurkuISainioTPaateroE．Thermodynamicsoftetracyclineadsorp-tiononsilicaJ．EnvironChem．Lett20075225．9ＲabolleMSpliidNH．Sorptionandmobilityofmetronidazoleola-quindoxoxytetracyclineandtylosininsoilJ．Chemosphere200040715．10XUHui-yingZHOUGuo-weiWEIYing-qinetal．PreparationofNiDopedMesoporousTiO2andItsApplicationinPhotocatalyticDegradationofPapermakingWastewaterJ．ChinaPulp＆Paper200827328．．NiTiO2J．200827328．11LIUMiaoYANGJunGAOYu-gangetal．StudyonPhotocatalyt-icTreatmentofPapermakingEffluentbyCFNano-titaniumDioxidePhotocatalystJ．ChinaPulp＆Paper201635131．．CFTiO2J．201635131．12ZHANGHong-xinCHENXiao-quan．AdvancedTreatmentofPa-per-makingWastewaterUsingNano-TiO2ColloidCoagulationPho-tocatalyzedOxidationandSandFiltrationProcessesJ．ChinaPulp＆Paper201332230．．TiO2--J．201332230．CPP(:)·42·ChinaPulp＆PaperVol.37No.122018