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《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》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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23、4、ivatedcarbonatdifferenttemperaturesforarsenateremovalfromwaterTANGMinkang,CHENPing,XUJianhong,GAONaiyun2,XIAOAihong(1.JiangxiUniversityofScienceandTechnology,Ganzhou341000,China;2.TongjiUniversity,Shanghai200092,China)Abstract:Granularactivatedcarbon(GAC)modifiedbyFe(11)-H2O2incipientwet5、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.Theironus7、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
3、4、ivatedcarbonatdifferenttemperaturesforarsenateremovalfromwaterTANGMinkang,CHENPing,XUJianhong,GAONaiyun2,XIAOAihong(1.JiangxiUniversityofScienceandTechnology,Ganzhou341000,China;2.TongjiUniversity,Shanghai200092,China)Abstract:Granularactivatedcarbon(GAC)modifiedbyFe(11)-H2O2incipientwet5、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.Theironus7、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
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
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