資源描述：
《硅藻土基復(fù)合除磷劑的制備及其吸附性能-高耀文》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、生態(tài)與農(nóng)村環(huán)境學(xué)報(bào)2012，28(6):706－711JournalofEcologyandRuralEnvironment硅藻土基復(fù)合除磷劑的制備及其吸附性能①高耀文，段寧，吳克明，沈麗娟(武漢科技大學(xué)冶金礦產(chǎn)資源高效利用與造塊湖北省重點(diǎn)實(shí)驗(yàn)室，湖北武漢430081)摘要:以硅藻土為原料，通過引入鋼渣復(fù)合的方法制備硅藻土基復(fù)合除磷劑，采用傅里葉變換紅外光譜(FTIR)、X-射線衍射(XRD)和掃描電鏡(SEM)對(duì)復(fù)合除磷劑進(jìn)行表征，并研究投加濃度、吸附時(shí)間、pH值和溫度對(duì)復(fù)合除磷劑吸附效果的影響。結(jié)果表明
2、，與鋼渣復(fù)合后，復(fù)合除磷劑中部分基團(tuán)可能發(fā)生變化，晶體結(jié)構(gòu)可能發(fā)生改變，－1出現(xiàn)新的晶相。靜態(tài)除磷試驗(yàn)表明復(fù)合除磷劑的最佳反應(yīng)條件:投加質(zhì)量濃度2g·L，吸附時(shí)間1h，水樣pH值為5，溫度25℃。硅藻土基復(fù)合除磷劑對(duì)磷的吸附動(dòng)力學(xué)行為符合準(zhǔn)二級(jí)動(dòng)力學(xué)模型;Freundlich、Langmuir和Redlich-Peterson吸附等溫方程均能較好地描述復(fù)合除磷劑對(duì)磷的等溫吸附特征。硅藻土基復(fù)合除磷劑對(duì)磷的理－1論飽和吸附量為1428mg·kg，是一種潛在的高效環(huán)保型吸附材料。關(guān)鍵詞:復(fù)合除磷劑;硅藻土;鋼渣
3、;動(dòng)力學(xué);吸附等溫線中圖分類號(hào):X703文獻(xiàn)標(biāo)志碼:A文章編號(hào):1673－4831(2012)06－0706－06PreparationandAdsorptionPerformanceofDiatomite-BasedCompositePhosphorusRemovalAgent．GAOYao-wen，DUANNing，WUKe-ming，SHENLi-juan(HubeiProvinceKeyLaboratoryofMetallurgyResourcesEfficientUtiliza-tionandAg
4、glomeration，WuhanUniversityofScienceandTechnology，Wuhan430081，China)Abstract:Diatomitewasusedasrawmaterialandpreparedintoadiatomite-basedcompositephosphorusremovalagentbycombiningitwithsomecombiningsteelslag．TheagentwascharacterizedwithFouriertransforminfr
5、aredspectroscopy(FTIR)，X-raydiffraction(XRD)andscanningelectronmicrograph(SEM)．Besides，effectsofdosageoftheagentused，durationoftheadsorption，pHvalueandtemperatureonperformanceoftheagentwereinvestigatedbybatchsorp-tionexperiments．Resultsshowthatcombinationw
6、ithsteelslaghasbroughtaboutsomechangesinsomeparssadsandincrystallinestructure，creatingnewcrystalphases．StaticP-removingexperimentsdemonstratethattheagentperformedthe－1bestwhentheagentwasappliedatarateof2g·L，intothewastewater，5inpHand25℃intemperature，for1hi
7、n-cubation．EvaluationoftheexperimentaldataintermsofadsorptionkineticsrevealsthatthePadsorptionkineticbehavioroftheagentwellfittedthepseudo-second-orderkineticmodel．Meanwhile，isothermalequations，suchasFreundlich，LangmuirandRedlich-Petersonisothermscanbeused
8、towelldescribetheadsorptionperformanceoftheagent．Thetheo-－1reticalPsaturationadsorptioncapacityoftheagentis1428mg·kg，whichindicatesthatthediatomite-basedcompositephosphorusremovalagentcanbeusedasapotentiallye
