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《偶氮染料廢水的脫色降解及機(jī)理研究(I)》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、河北大學(xué)博士學(xué)位論文偶氮染料廢水的脫色降解及機(jī)理研究姓名：宋亞麗申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：分析化學(xué)指導(dǎo)教師：李記太20090601摘要異相光催化技術(shù)用于處理染料廢水具有重要的環(huán)境經(jīng)濟(jì)效益。在太陽(yáng)光照射下以納米Ti02為催化劑，考察了10種偶氮染料于常溫條件下的脫色效果，酸性橙74的脫色率為47．8％，其余的幾乎完全脫色；研究了直接藍(lán)78在光降解過程中的影響因素；利用UV-Ⅵs和LC．MS對(duì)降解產(chǎn)物進(jìn)行測(cè)定，探討了直接藍(lán)78降解的可能歷程。關(guān)鍵詞偶氮染料超聲脫色降解吸附Fenton試劑光降解lIAbstract曼曼!曼曼寡I；II．I一．=；一__；_一I!曼鼉曼!曼鼉Theazodye
2、wastewaterischaracterizedwithhi曲valueofCODer,complicationoforganiccomponents，moredifficultremediation，andhi曲colority．Increasingattentionhasbeenfocusedontheeconomicandefficientprocedureforthedecolorizationordegradationofazodyesaqueoussolution．Themethodsusedfortreatingazodyewastewateraredescribed
3、．Progressintreatmentofazodyepollutantsinwaterbyusingultrasoundtechnology(includingultrasoundirradiationindividuallyandultrasonicwavesinconjunction誦t11othertechniques)isreviewed．Decolorizationordegradationofazodyesaqueoussolutionbyultrasound／exfoliatedgraphite，ultrasound／Fenton，ultrasound／Flyash
4、／H202andkaolinitewasstudied．Theresulmshowedthattheprocessesareeffectiveinremovingazodyesfromaqueoussolution．AcombinationofultrasoundandexfoliatedgraphitewasusedtotreatAcidBrown348andDirectBlue78aqueoussolutions，respectively．Theinfluenceofvariousaffectingfactors，suchasirradiationtime，reactiontem
5、perature，pHvalueandtheinitialconcentrationweresystematicallyevaluated．Themodelofazodyeadsorptiononexfoliatedgraphiteunderultrasoundirradiationwasinvestigated．ItCanachievebetterresultsthaneitherexfoliatedgraphiteorultrasoundonly．LowpHvalueisconducivetotheremovalofthedye．TheLangmuirandFreundlichi
6、sothermswereusedtoobservesorptionphenomenaofexfoliatedgraphiteunderultrasoundirradiation．TheresultshaveshownthattheLangmuirisothermandFreundlichisothermwerewellfittedintotheexperimentaldata．Intheoptimumconditions，theremovalratioofAcidBrown348fromindustrialwastewaterwas85．O％．Fentonprocessisoneof
7、theadvancedoxidationtechnology,anditcombinedwitllultrasoundiseffectivetodegradetheorganiccontaminations．InthecombinationofultrasoundandFentonreagent，thedegradationefficiencyof98．6％(AcidRed88)and99．9％(AcidRed97)wasachievedrespectiv
