通过静态吸附实验,研究了Pb2+在001×7强酸性阳离子交换树脂上的吸附行为,并从热力学和动力学方面对吸附过程进行了分析,用红外光谱的方法探讨了001×7树脂吸附Pb2+的机理.结果表明:在所研究的浓度范围内,Pb2+在001×7树脂上的吸附平衡数据符合Freundlich等温吸附方程,吸附为自发进行的放热过程;液膜扩散为Pb2+在001×7树脂上吸附速率的主要控制步骤,随着振荡频率的增加,吸附速率会逐渐增大;最佳的吸附pH在4左右,用3 mol/L的硝酸对饱和树脂进行洗脱再生,洗脱率可达98%以上;298 K温度下树脂的静态饱和吸附容量为414 mg/g(湿树脂).
参考文献
| [1] | 张少峰,胡熙恩.含铅废水处理技术及其展望[J].环境污染治理技术与设备,2003(11):68-71. |
| [2] | Committee on Measuring Lead in Critical Populations.Measuring lead exposure in inants,children and other sensitive population[M].Washington,DC:National Academy Press,1993:1-72. |
| [3] | 郑容光;张丽梅 .白云石灰乳处理含铅废水的研究[J].环境与开发,2000,15(04):35-36. |
| [4] | Kratochvil D.;Volesky B. .Advances in the biosorption of heavy metals[J].Trends in Biotechnology,1998(7):291-300. |
| [5] | DENG Li-ping;SU Ying-ying;SU Hua;WANG Xin-ting ZHU Xiao-bin .Sorption and desorption of lead (Ⅱ) form wastewater by green algae cladophora fascicularis[J].Journal of Hazardous Materials,2007,143(1-2):220-225. |
| [6] | Runping Han;Hongkui Li;Yanhu Li;Jinghua Zhang;Huijun Xiao;Jie Shi .Biosorption of copper and lead ions by waste beer yeast[J].Journal of hazardous materials,2006(3):1569-1576. |
| [7] | Makhloufi L.;Hammache H.;Saidani B. .Removal of lead ions from acidic aqueous solutions by cementation on iron[J].Water research: A journal of the international water association,2000(9):2517-2524. |
| [8] | MEMON S Q;HASANY S M;BHANGER M I;KHUHAWAR M Y .Enrichment of Pb(Ⅱ) ions using phthalic acid functionalized XAD-16 resin as a sorbent[J].Journal of Colloid and Interface Science,2005,291(11):84-91. |
| [9] | V.K.Gupta;Premvir Singh;Nafisur Rahman .Adsorption behavior of Hg(II),Pb(II),and Cd(II) from aqueous solution on Duolite C-433:a synthetic resin[J].Journal of Colloid and Interface Science,2004(2):398-402. |
| [10] | 王永江,熊春华,张启伟,王桂仙.氨基膦酸树脂对铅的吸附性能及机理[J].中国有色金属学报,2002(04):832-836. |
| [11] | TRACI P;GAIL M B;MARIT J;FRANK D .Investigating the effect of carbon shape on virus adsorption[J].Environmental Science and Technology,2000,34(13):2779-2783. |
| [12] | Salem IA.;El-Maazawi MS. .Kinetics and mechanism of color removal of methylene blue with hydrogen peroxide catalyzed by some supported alumina surfaces[J].Chemosphere,2000(8):1173-1180. |
| [13] | Ana M. Carmo;Lakhwinder S. Hundal;Michael L. Thompson .Sorption of hydrophobic organic compounds by soil materials: application of unit equivalent Freundlich coefficients[J].Environmental Science & Technology: ES&T,2000(20):4363-4369. |
| [14] | GARCLA-DELGADO R A;COTOUELO-MINGUEZ L M;RODFIGUEZ J J .Equilibrium study of single-solute adsorption of anionic surfactants with polymeric XAD resins[J].Separation Science and Technology,1992,27(07):975-987. |
| [15] | 马红梅,朱志良,张荣华,林建伟,赵建夫.弱碱性环氧阴离子交换树脂去除水中铜的动力学研究[J].离子交换与吸附,2006(06):519-526. |
| [16] | 何炳林;黄文强.离子交换与吸附树脂[M].上海:上海科技教育出版社,1995:146-147. |
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