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··SAH阴离子天然高分子改性絮凝剂的合成及应用:2003-04-15宋辉,马希晨(大连轻工业学院化学工程系,辽宁大连116034):,(),,,-SAH。,、、、。SAH、COD90%,。:;;;:TQ314.253 :A :1004-8960(2003)03-0017-05SynthesisandApplicationofAnionInartificialHighMolecularFlocculant(SAH)SONGHui,MAXi-chen(DeptmentofChemicalEngineering,DalianInstituteofLightIndustry,Dalian116034,China)Abstract:Thispaperdescribescornstarchasbasematerialreactswithacrylnitrilewhichistherecoverymaterialofdegradatedpolyacrylamidebyusingthemethodofgraftcopolymerization,thentheweakanionflocculantisproducedbyhydrolysisreaction.Afterhydroxymethylationandsurfonationreaction,thestronganioninartificialhighmolecularflocculant(SAH)issynthesized.Weinvestigatetheprincipleofgraftcopolymerizationreactionandparticularlystudytheeffectongraftratioandgraftefficiencyofinitiator'sconcentration,starch/monomerratio,reactiontemperatureandtime.WhenSAHisusedtodealwiththewastewaterofthedyingfactoryandthepaperfactory,theremovalratesofturbidityandCODofthewastewaterarebothover90%.Theresultoftheflocculantperformanceshowsthatithasbetterflocculatingeffect.Keywords:starch;acrylnitrile;graft-copolymerization;flocculant ,、、。,,、、。—17— 20 皮 革 化 工 3 [1-5]。,,,———,(WAH),、(SAH)。SAH、,COD90.1%、91.2%,COD94.6%、80.4%,。1 1.1 1.2 ::StCHOHCHOH+CH2CHCNStCOCH2CHCN:StCOCH2CHCN+NaOHH2OStCO(CH2CH)xCNH2O(CH2CH)yCOOHCH2·CH)zCOONa(WAH):StCOCH2CHCNH2O+HCHOPHT StCOCH2·CHCONHCH2OHStCOCH2CHCNHCH2OHO+NaHSO3pHT StCOCH2·CHCONHCH2SO3Na(SAH)、,,,。,NaOH,、,。HCHO,。NaHSO3,pH,。1.3 G0,10G1,—18— Vol.20 LEATHERCHEMICALS No.3 ,。,60℃4h,,W′,60:40()-,18h,,60℃,WP′。:WP=WP′/G1:W0=W0′/G0,G%=(wp-ws)/wp×100%E%=(G0w′)/(G1wam)×100%:WP;Ws;Wam。2 2.1 Ce4+:,[6]。Ce4+,StCHOHCHOH,M,:(1)StCHOHCHOH+Ce4+CH+StStOCH·+Ce3++H+OHCH·+Ce4+StOHCH+Ce3++H+StOCH+Ce4+StOC·+Ce3++H+StOC·+StMOCM·StO(2)CM·+StMOCM2·StOCMn·+StMOCM(n+1)·StO(3)CMn·+StStOCMm·OStCMn+mC·+StStOC·OStCOCOStCMn·+StStOC·OStCOMnCOSt2.2 1 1,,,5mmol/L,Ce4+,。Ce4+,,;Ce4+—19— 20 皮 革 化 工 3 ,,,。,5mmol/L。2.3 2 2,,;,。,,,,,,,,。,∶=1∶1.8。2.4 3 3,35℃,,,Ce4+,;,,,,。35℃,,、Ce4+,,。,35℃。2.5 4 4,,,2,。,,,,,;,,,,,。2h。2.6 ,,。,N2,,Fe、Cu。,,400r/min。2.7 -CN-CONH2,-COONa,-COOH,。,。—20— Vol.20 LEATHERCHEMICALS No.3 ,;,。,8%~10%。,;,。,2h。3 SAHHPAM,1。1 水样絮凝剂沉降速度(cm/min)浊度去除率(%)COD去除率(%)印染废水SAHHPAM6.52.691.26390.172.7造纸污水SAHHPAM5.84.680.464.394.683 注:印染废水的浊度为500mg/l,造纸污水的浊度为2300mg/l,印染废水的COD值为464mg/l,造纸污水的COD值为685mg/l。1,SAHHPAM。,,。,,,,COD,。4 1 、、、,:5mmol/l,∶()=1∶1.8,35℃,2h。120.7%,90.6%。:8%~10%,2h。:pH=10~11,30-35℃,2h。:pH=10~12,50-55℃,2h。2 SAH。,、、,,。:[1]马希晨,曹亚峰.季铵盐聚丙烯酰胺接枝阳离子絮凝剂的研制[J].农村能源,1996,(6):26~29.[2]马希晨.CGSP高效复合絮凝剂的研制[D]..工业表面活性剂技术经济文集(6),2000,65~67.[3]丁有骏.淀粉共聚物的合成与应用[J].高分子通报,1993,(3):140~145.[4]巫拱生.丙烯腈与淀粉的接枝共聚反应———氧化还原引发体系活性的比较[J].青岛化工,1990(1):15~20.[5]KJYoonMECarr&EBBagltyJ.Appl,PolymerSci,1992,45(6):85.[6]周其凤,胡汉杰.高分子化学[M].北京:化学工业出版社,2001,25~26.””,7,。、、、、、。(),22890%,。,,,()”、、、、”。—21— 20 皮 革 化 工 3
本文标题:SAH阴离子天然高分子改性絮凝剂的合成及应用宋辉
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