Fe（Ⅱ）-H2O2不同温度浸润改性活性炭吸附去除水中砷（Ⅴ）-论文.pdf

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1、第5卷第4期有色金属科学与工程VoL5，No．42014年8月Nonfe~ousMetalsScienceandEngineeringAug．2014文章编号：1674—9669(2014)04—0066—05DOh10．13264~．cnki．ysjskx．2014．04．013Fe(Ⅱ)一H2O2不同温度浸润改性活性炭吸附去除水中砷∽唐敏康，陈苹，许建红，高乃云，肖爱红(1．江西理工大学资源与环境工程学院，江西赣州341000；2．同济大学环境科学与工程学院，上海200092)摘要：Fe(Ⅱ)一H2O2不同温度浸润改性活性炭是采用FeSO4·7H2O添加H202在温

2、度100℃下纯浸润24h(Fe(111—24h1和高温蒸发15min(Fe(I1)一15min)制备．对2类材料进行SEM表征并对其吸附1．1mg／L砷m的性能进行比较．SEM显示Fe(Ⅱ)(0．485％)一24h(0．485％为Fe(Ⅱ)一24h的铁含量，下同)表面覆盖厚的棒状纳米羟基铁，Fe(II)f1．35％)一15min表面覆盖薄而烧结扭曲羟基铁；高温蒸发15min有利于铁负载；Fe(II)一24h(108~142m~gFe)对砷(V)吸附的铁效率是Fe(1I)-15min(57~63mg／gFe)的2倍；Fe(H)(O．485％)一24h在2

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4、ivatedcarbonatdifferenttemperaturesforarsenateremovalfromwaterTANGMinkang，CHENPing，XUJianhong，GAONaiyun2,XIAOAihong(1．JiangxiUniversityofScienceandTechnology，Ganzhou341000，China；2．TongjiUniversity，Shanghai200092，China)Abstract：Granularactivatedcarbon(GAC)modifiedbyFe(11)-H2O2incipientwet

5、nessimpregnationatdiferenttemperaturesarepreparedbyFeS04"7H20andhydrogenperoxide(H2o2)viatheincipientwetnessfor24hat100oC(Fe(II)一24h)andthehightemperatureevaporationfor15min(Fe(11)-15min)．Fe(II)-24handFe(1I)一15minarecharacterizedbySEMandarecomparedfortheadsorptionbehaviorofthearsenatef1．

6、1mg／L)．TheSEMhasshownthatnano—ironhydroxidesareformedonthesurfaceofFe(11)(0．485％)一24h(0．485％istheironcontentofFeflI1—24h，thesamebelow)andthatsinteringdistortedhydroxidesareformedonthesurfaceofFe(1I)f1．35％1—15min．Thehightemperatureevaporationfor15minisfavorableforirontoloadofGAC．Theironus

7、eeficiencyofFe(II)-24h(108-142m~gFe)istwofoldofthatofFe(II)一15min(57~63mg／gFe)．ThearsenateequilibriumadsorptioncapacityofFe(1I)(0．485％)-24hisbetterthantheFe(II)(1．35％)-15minatpH23．5or9～12，atthesametime,thesolubleironatanyparticularpHreleasedfromtheFe(II)(0．485％)-24hisless