Adsorption of Pb2+ by Chemically Modified Orange Peel
-
摘要: 研究了经化学改性的橘子皮吸附剂对Pb2+的吸附性能.考察了溶液pH值、吸附时间及Pb2+初始质量浓度对该吸附剂吸附性能的影响.结果表明,吸附过程可以很好地用准二级动力学方程描述,吸附等温线用Langmuir方程拟合效果优于Freundlich方程.pH4.5,30℃时最大吸附容量为146.4 mg/g.经改性的橘子皮可重复使用5次以上.Abstract: In this study,lead adsorption by chemically modified orange peel adsorbent was investigated.Effects of various parameters,including solution pH,adsorption time and initial Pb2+ concentration were studied by batch experiments.Kinetics was found to be best-fit pseudo-second order equations.Equilibrium was well described by Langmuir isotherms rather than Freudlich isotherms.At pH4.5,30℃,the maximum adsorption capacity was 146.413mg/g.This biosorbent was suitable for repeated use for more than five cycles.
-
Keywords:
- chemically modified orange peel /
- Pb2+ /
- adsorption kinetics /
- adsorption isotherms
-
-
[1] AHLUWALIA S S,GOYAL D.Microbial and plant derived biomass for removal of heavy metals from wastewater[J].Bioresource Technology,2007,98(12):2243-2257.
[2] TONNI A K,GILBERTY S C,WAI-HUNG L.Comparisons of low-cost for treating wastewaters laden with heavy metals[J].Science of the Total Environment,2006,366(2-3):409-426.
[3] 刘传富,孙润仓,孙爱萍,等.农林废弃物处理工业废水的研究进展[J].现代化工,2006,26(S1):84-87.LIU Chuan-fu,SUN Run-cang,SUN Ai-ping,et al.Advance in application of agricultural and forest residues in wastewatertreatment[J].Modern Chemical Industry,2006,26(S1):84-87.(in Chinese) [4] LIANG S,GUO X Y,FENG NC,et al.Adsorption of Cu2+and Cd2+from aqueous solution by mercapto-acetic acid modifiedorange peel[J].Colloids and Surfaces B:Biointerfaces,2009,73(1):10-14.
[5] 梁莎,冯宁川,郭学益.生物吸附法处理重金属废水研究进展[J].水处理技术,2009,35(3):13-17.LIANG Sha,FENG Ning-chuan,GUO Xue-yi.Progress of heavy metal wastewater treatment by biosorption[J].Technology ofWater Treatment,2009,35(3):13-17.(in Chinese) [6] DANG VB H,DOANHD,DAND-VUT,et al.Equilibrium and kinetics of biosorption of cadmium(II)and copper(II)ionsby wheat straw[J].Bioresource Technology,2009,100(1):211-219.
[7] SCHIEWER S,BALARIAA.Biosorption of Pb2+by original and protonated citrus peel:equilibrium,kinetics and mechanism[J].Chemical Engineering Journal,2009,146(2):211-219.
[8] LI X M,TANG Y R,XUAN Z X,et al.Study on the preparation of orange peel cellulose adsorbents and biosorption of Cd2+from aqueous solution[J].Separation Purification Technology,2007,55(1):69-75.
[9] P REZ-MAR N A B,ZAPATA V M,ORTU O J F,et al.Removal of cadmium from aqueous solutions by adsorption ontoorange waste[J].Journal of Hazardous Materials,2007,B139(1):122-131.
[10] AJMAL M,RAO R A K,AHMAD R,et al.Adsorption studies on Citrus reticulata(fruit peel of orange):removal andrecovery of Ni(II)from electroplating wastewater[J].Journal of Hazardous Materials,2000,B79(1-2):117-131.
[11] FARINELLA N V,MATOS G D,ARRUDA MA Z.Grape bagasse as a potential biosorbent of metals in effulent treatments[J].Bioresource Technology,2007,98(10):1940-1946.
[12] IQBAL M,SAEED A,IQBAL Z S.FTIR spectrophotometry,kinetics and adsorption isotherms modeling,ion exchange,andEDX analysis for understanding the mechanism of Cd2+and Pb2+removal by mango peel waste[J].Journal of HazardousMaterials,2009,164(1):161-171.
[13] PANDA G C,DAS S K,GUHA A K.Biosorption of cadmium and nickel by functionalized husk of Lathyrus sativus[J].Collids and Surfaces,2008,62(2):173-179.
[14] HO Y S,MCKAY G.Pseudo-second order model for sorption processes[J].Process Biochemistry.1999,34(5):451-465.
[15] ZACAR M,SENGIL I A.Adsorption of reactive dyes on calcined alunite from aqueous solutions[J].Journal of HazardousMaterial,2003,B 98(1-3):211-224.
[16] LANGMUIR I.The adsorption of gases on plane surface of glass,mica and platinum[J].Journal of American ChemistrySociety,1918,40(9):1361-1403.
[17] FREUDLICHHM F.Uber die adsorption in Losungen[J].Z Phys Chem,1906,57:385-470.
[18] SENGIL I A,ZACAR M.Competitive biosorption of Pb2+,Cu2+and Zn2+ions from aqueous solutions onto valonia tanninresin[J].Journal of Hazardous Materials,2009,166(2-3):1488-1494.
[19] ZACAR M,SENGIL I A,T RKMENLER H.Equilibrium and kinetic data,and adsorption mechanism for adsorption oflead onto valonia tannin resin[J].Chemical Engineering Journal,2008,143(1-3):32-42.
[20] WEBER TW,CHAKRAVORTI R K.Pore and solid diffusion models for fixed bed adsorbers[J].American Institute ofChemical Engineers Journal,1974,20(2):228.
[21] MCKAY G,BLAIR H S,GARDENER J R.Adsorption of dyes on chitinⅠequilibrium studies[J].Journal of appliedpolymer science,1982,27(8):3043-3057.
[22] KADIRVELUK,NAMASIVAYAMC.Activated carbon from coconut coirpith as metal adsorbent:adsorption of Cd(Ⅱ)fromaqueous solution[J].Advances in Environmental Research,2003,7(2):471-478.
计量
- 文章访问数: 12
- HTML全文浏览量: 0
- PDF下载量: 8
下载:
