粉煤灰及改性粉煤灰對DNBP的吸附行為研究.pdf

1、大連理工大學(xué)碩士學(xué)位論文粉煤灰及改性粉煤灰對DNBP的吸附行為研究姓名：韓立娟申請學(xué)位級別：碩士專業(yè)：無機(jī)化學(xué)指導(dǎo)教師：王慧龍20070601粉煤灰及改性粉煤灰對DNBP的吸附行為研究ResearchonAdsorptionBehaviorofDNBPonFlyashandModifiedFlyashAbstract2sec—butyl一4，6一dinitrophenol(DNBP)isappliedextensivelyasherbi

2、cide，pesticideandpolymerizationinhibitorforaromaticvinylcompoundAmassofhighlytoxicnitrophenolwastee筋uentsareproducedintlleprocessofDNBPproductionn地wastewaterhascausednotonlymanyseriousenvironmentalproblems，butalsohindere

3、dfurdlerdevelopmentoftheseproductionindustriesAtpresentverylittleresearchonthetreatmentofDNBPwastewatercanbefoundInthepapertheadsorptionbehaviorofDNBPinaqueoussolutiononflyashandmodifiedflyashhasbeeninvestigatedbystatica

4、dsorptiontechniqueT11isresearchprovidesthepotentialapplicationofflyashasanadsorbentforthetreatmentofDNBPwastewaternleresearchinthispaperinvolvestwopartsInthefirstpartofthepapertheeffectsofvariousfactors，suchasshakingtime

5、，frequenceofshaking，initialconcentrationof七INBP，pHvalue，tempreture，particlesizeandinorganicanionontheadsorptioncapabilityofflyashhavebeenstudiedthroughly111eadsorbilityofflyashwascomparedwiththatofactivatedcarbonunderthe

6、optimumadsorptionconditionTheresultsshowthatalowerpHvalueofsolutionandsmallerparticlesizeofflyashisfavourableforDNBPadsorptionInorganicanionssuchasCt’，N03。，S04小haveacompetitioneffectontheadsorptioncapabil時ofnyashTheadsor

7、ptioncapabilityofflyashiSsuperiortothatofactivatedcarbonwhentlleinitialconcentrationofDNBPiSlowerthan29megLandtheadsorptioncap曲ilityofflyashCa／l_stillachieve982％一866％oftheactivatedcarbonwhentheinitialconcentrationofDNBPi

8、shirgherthan29mg，LTheadsorptioncapabilityofflyashCanbeenhancedbymodifingflyashwithhexadecyltrimethylammoniumbromide(CTMAB)n地adsorptioncapabilityofmodifiedflyashissuperiortothatofactivatedcarboninallconcentrationsofDNBPst

9、udiedinthisPaDermequilibriumamountofDNBPadsorbedincreasesfrom645mg／gforflyashto878mg／gformodifiedflyashComparedwithflyash，themodifiedflyashhaveabetteradsorptioncapabilityinanextensivelypHrangeInthesecondpartofthepaper，th

10、ethermodynamicsandkineticsintheprocessofadsorptionofDNBPonflyashandmodifiedflyashwereanalysedTheadsorptionisothermsandkineticsmodelswereappliedtocalculate血ecorrespondingparametersTheresultsshowthatpseudosecondorderkineti