含醚键离子交换树脂对电镀废水中Zn2的吸附条件罗道成

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69   Zn2+,,(,411201)[ ] 电镀废水中含有大量的Zn2+,严重污染环境,危及人类健康,必须进行有效的处理方可排放。为此,在静态条件下,采用含醚键离子交换树脂对含Zn2+的模拟电镀废水进行了吸附处理,探讨了树脂用量、废水pH值、吸附时间、吸附温度对Zn2+去除效果的影响。结果表明:在废水pH值为4.0,Zn2+浓度0~100mg/L,吸附时间90min,吸附温度25℃下,按Zn2+与含醚键离子交换树脂质量比为1∶20投加含醚键离子交换树脂进行处理,Zn2+去除率可达98%以上;含Zn2+的电镀废水经含醚键离子交换树脂吸附后,废水中Zn2+的含量低于国家一级排放标准。[] 废水处理;电镀废水;含醚键离子交换树脂;吸附;Zn2+[]X781.1  []B  []1001-1560(2010)03-0069-03  [] 20091021  [] (1967-),,,,:13055149486,E-mail:luodaocheng21@yahoo.com.cn0  ,[1,2],[3,4],,。,[5,6]、[7]、[8~11]、。、、,,,Zn2+。1  1.1Zn2+Zn(NO3)2,1000mL,,,Zn2+1000mg/L,。。1.235g(CP)150mL(CP)50mL(),15mLH2SO4(),85~95℃,3h,,;1.0mol/LNaOH4~5h,,2h,、40,。1.330,40,50,60mg50mLZn2+60mg/L100mL,1.0mol/LHCl1.0mol/LNaOHpH3.0~7.0,25℃,15min3~5min,90minZn2+,:η()=(ρ0-ρ)/ρ0×100% ρ0———,mg/Lρ———,mg/L70   1.4 pHpHS-3C,CS-501SP;Zn2+[12]。2 2.1 2.1.1 含醚键离子交换树脂的量对Zn2+去除率的影响pH=4.0,25℃,50mLZn2+1000mg/L,1.0g,,90min。,Zn2+93.8mg/g,Zn2+。50mLZn2+60mg/L,,,Zn2+1。1,,Zn2+,50mg,Zn2+98%。60mg,Zn2+1∶20Zn2+。1 Zn2+m()/mgη()/%3072.84088.05098.46099.12.1.2 溶液pH值60mg,60mg/LZn2+50mL,pHZn2+2。2,pH4.0,Zn2+,;pH4.0,Zn2+,97.0%,;Zn2+pH4.0。2 pHZn2+pH3.04.05.06.07.0η()/%73.698.597.697.597.42.1.3 吸附时间pH4.0,25℃,Zn2+60mg/L50mL,60mg,,Zn2+3。3,,Zn2+;80min,Zn2+98.0%,。3 Zn2+t/min405060708090η()/%47.363.077.289.198.499.02.1.4 吸附温度pH=4.0,90min,Zn2+60mg/L50mL,60mg,,Zn2+,4。4,5~25℃,,Zn2+,25℃,Zn2+。4 Zn2+θ/℃51015253545η()/%67.579.189.297.498.198.72.2 Zn2+28.5mg/L,pH5.9,100mL150mL,80mg,25℃,90min,15min3~5min,5。5,Zn2+,,Zn2+。5 Zn2+ρ()/(mgL-1)ρ()/(mgL-1)ρ()/(mgL-1)28.500.232.002.3 ,,。,Zn2+1.0mol/LHCl,Cl-,。Zn2+。,,6。6,4,Zn2+,Zn2+78%。71   6 n()/ρ()/(mgL-1)ρ()/(mgL-1)η()/%160.000.6798.88260.003.4194.32360.007.7487.10460.0013.1678.073  (1)Zn2+。25℃,pH4.0,90min,Zn2+60mg/L,Zn2+1∶20,Zn2+98%。(2)pH,pH4.0,Zn2+,Zn2+;pH4.0,Zn2+,97%,Zn2+;Zn2+pH4.0。(3)Zn2+。Zn2+28.5mg/L,pH5.9,Zn2+。(4)Zn2+,。[][1] , ,,.[J].,2003,29(6):363~366.[2] ,, ,.[J].(),2007,22(1):111~114.[3] ,, ,.3-/[J].(),2008,23(4):103~106.[4] ,,.[J].(),2008,23(4):107~110.[5] ,,,.Pb2+、Hg2+、Cd2+[J].,2003,29(2):89~91.[6] ,.[J].,2006,39(5):63~65.[7] ,,,.[J].,2002,35(4):54~56.[8] ,,,.[J].,2002,35(1):11~12.[9] ,.Ni2+[J].,2007,40(4):50~52.[10] ,,.[J].,2005,38(5):60~62.[11] ,,.[J].,2008,41(12):75~76.[:](60),620℃(),,,720h,。3  310s,3。,;720h,,,,,。[][1] SegalA,EpsteinM.Optimizedworkingtemperaturesofasolarcentralreceiver[J].SolarEnergy,2003,75:503~510.[2] HasuikeH,YoshizawaY,SuzukiA,etal.Studyondesignofmoltensaltsolarreceiversforbeam-downsolarconcen-trator[J].SolarEnergy,2006,80:1255~1262.[3] .[J].,2000,29(3):28~29.[4]  .[J].,1995,16(5):214~216.[5]  , .[J].,2006,33(5):57~60.[6]  ,.[J].,2006,44(11):1~4.[:]

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