AC催化臭氧降解造纸废水

39220173JOUＲNALOFNANJINGTECHUNIVEＲSITYNaturalScienceEditionVol．39No．2Mar．2017doi10．3969/j．issn．1671－7627．2017．02．006TiO2/AC2100092015－05－272013BAE11B031989—[e-mail]．．TiO2/ACJ．201739231－38．-ACTiO2TiO2/AC。FESEM、N2BET、XXＲD。TiO2/AC、。TiO2500℃60minCOD96.8%60.4%1.8%9.9%、。TiO2/ACX703.11671－7627201702－0031－08DegradationofpapermakingwastewaterbyozonewithTiO2/ACLIUYuchuanYANGGangCollegeofChemicalEngineeringNanjingTechUniversityNanjing210009ChinaAbstractTiO2/ACcatalystswerepreparedbysol-gelmethod．ThepropertiesofthecatalystswerecharacterizedbyfieldemissionscanningelectronmicroscopeFESEMBETspecificsurfaceareafromnitrogenadsorptionandX-raydiffractionXＲD．TiO2/ACcatalystswereappliedtotheozonationofpapermakingwastewatertreatment．ThecatalyticandreusableperformanceofTiO2/ACwasinvestigatedandsurfacepropertiesofTiO2/ACbeforeandafterreactionwereanalyzedandthedegradationproductsofpapermakingwastewaterweredetected．Ｒesultsshowedthattitaniumdioxidewasuniformloadedonthesurfaceandtheporeofactivatedcarbon．Thecatalystcalcinedat500℃wasanataseandrutilemixedcrystal．After60minutesofcatalyticozonationthechromaandchemicaloxygendemandCODremovalrateofpapermakingwastewaterreached96.8%and60.4%whichwere1.8%and9.9%higherthantheozonationalone．Papermakingwastewatercompositionwasmainlyestersandalkaneandaftercatalyticozonationmacromolecularmaterialwasdegradedtosomesmallmolecules．KeywordsTiO2/ACcatalystozonepapermakingwastewater、1－2。COD。。、、3。TiO2、4－5。TiO2、AC、6TiO2TiO27。AC-TiO2/ACFESEMXXＲD。CODTiO2/AC。11.1、、、、NaOH、、。。1.2TiO2/AC1.2.1ACAC110℃6h。AC1mol/LAC24h。3h13。110℃。1.2.260mL0.5hA。60mL10mLA0.5hAC1h2hTiO2AC。TiO2AC60℃5h3hTiO2/AC。1.3Miniflex600XXＲD40kV15mA10°～70°2θ。S-4800FESEM。BET、BJHASAP2460N2-。1.4COD855mg/L724pH8.12。1.4.111。1Fig．1Diagramofequipmentforozonation21L25℃30min25℃2.5g。23390.45μmCOD。。1.4.2CODCOD2mLCODCOD150℃2h120℃620nmCODCOD。。10mL465nm。1.4.3110mL50mL10mL2∶15min2CaCl25mL-GC-MS。2GC-MSAgilentGC7820-MS5975。Agilent19091S-433HP-5MS30m×250μm×0.25μm。50℃2min14℃/min120℃2min10℃/min280℃5min。He1.5mL/min1.5min。50～600m/z。22.12.1.1FESEM2AC500℃TiO2/ACSEM。2AC500℃TiO2ACTiO2AC。2ACTiO2/ACSEMFig．2SEMimagesofACandTiO2/ACcatalyst2.1.2BET1AC500℃TiO2/ACBET。1-TiO2/ACBETAC。TiO2AC。2.1.3EDS32ACTiO2/AC。32ACCOC1ACTiO2/ACBETTable1BETdataofACandTiO2/ACcatalystBET/m2·g－1/nm/cm3·g－1AC824．33．160．469TiO2/AC526．64．070．323ACCOAC8。TiO2/ACC、OTi389.47%、9.95%0.58%。TiAC。332TiO2/AC3ACTiO2/ACEDSFig．3EDSspectrogramsofACandTiO2/ACcatalyst2ACTiO2/ACTable2ElementsofACandTiO2/AC%ACTiO2/ACC88.6791.2485.1989.47O11.338.7612.629.95Ti2.190.582.1.4XＲD4TiO2/ACXＲD。25.4°、37.9°、48.1°、54.0°。4TiO2/AC400、500600℃300℃TiO2TiO2500℃27.5°、56.6°、69.1°TiO2/AC。2.22.2.15。5TiO2/AC。60minCOD95.0%50.5%ACCOD1%1.4%96%51.9%TiO2/ACO3/4TiO2/ACXＲDFig．4XＲDspectraofTiO2/ACcatalystscalcinedatdifferenttemperaturesCOD96.8%60.4%1.8%9.9%0.8%8.5%。COD。AC9TiO2TiO2/ACTiO210。。2.2.26。660min96.3%42.5%93.8%43395Fig．5Degradationofpapermakingwastewaterbydifferentprocesses。CODCOD59.9%3COD6.3%53.6%COD0.8%52.7%COD。。、11。6TiO2/ACFig．6Effectsofcatalystreuseondegradationofpapermakingwastewater2.2.378SEM。7669cm－123412358cm－1Si—H。8HO·。7TiO2/ACFT-IＲFig．7FT-IＲspectraofTiO2/ACcatalystsamples2.2.4O3、O3/AC、O3/1.4.3GC-MS9。3。329、、、、、。、、。GC-MS532TiO2/AC8TiO2/ACSEMFig．8SEMimagesofTiO2/ACcatalystsamples9。。9GC-MSFig．9GC-MSspectraofpapermakingwastewaterafterdifferentprocesses31-TiO2/ACSEM、BET、EDS、XＲDSEM、BETEDS。XＲD500℃。2。TiO2/AC60minCOD60.4%9.9%8.5%。329、3Table3Organicpollutantsinpapermakingwastewaterbeforeandafterreactionandtheirrelativecontents/min/%O3O3/ACO3/C4H8O21.7991.2928.4933.2317.21C2H2Cl2O22.037—1.79——2-C9H11Cl2.125—5.497.35.72C2H8O2Si2.256—2.150.542.273-C5H10O2.362—0.970.620.75C5H10O22.594—0.770.410.5922-C6H14O23.6000.357.523.394.94C14H30O3.463—0.770.340.601-1-C8H18O23.6511.7311.6415.8321.4824-C9H203.757——0.520.626339/min/%O3O3/ACO3/22-C6H12O43.864—0.62——33--2-C6H12O34.127—2.281.051.43C4H9NS4.227—1.310.610.894-C9H204.327——0.440.46C8H104.439—0.610.410.54C10H16OSi4.552—1.070.841.12C6H18O3Si36.754—0.740.580.84C12H266.898—0.780.881.1437-C12H266.966——0.430.35C6H18O3Si37.054—0.59——C11H247.423—1.570.701.09C9H20O2Si8.3610.252.543.063.25C13H2810.132——0.480.522-C14H20SO210.426—0.790.961.0326-C14H20O213.466———0.52C27H5613.791—0.790.870.9235-C14H22O14.016—0.890.760.589-C13H9SN14.02919.34———C14H3014.391—0.530.450.5545--2-C8H5NO614.8792.03———2--46-C6H9N3O215.1804.49———2--46-C8H10ClN15.3364.48———--C15H26O15.531.08———β-C10H16O15.6670.77———2--3H-a-3-C30H28Si16.0741.49———C14H14O316.4060.96———C28H5816.487—0.590.640.64C18H54O9Si917.3811.01———C16H22O417.5193.04———C20H41O218.276—0.620.530.411--1-C16H31BO18.3321.11———C17H34O218.50123.00———45--36--35-C14H2618.6322.29———3-35--4-C18H28O318.6831.68———732TiO2/AC/min/%O3O3/ACO3/C17H3618.808—0.960.770.792-C11H13SN18.9200.42———261014-C22H4619.3770.63———C16H33Cl20.4340.65———C21H4420.4720.70———C19H38O220.6907.40———C14H14O20.9721.07———C22H4621.3791.70———C15H14O321.9481.25———C31H6422.2481.62———44'-6-C22H30O2S22.6230.87———C24H5023.0800.62———C18H35N23.8681.38———C22H43NO26.1261.535.930.760.31。TiO2/AC。1ZHOUHSMITHDW．Processparame