探讨模拟重金属Pb2+-Cu2+混合废水中面包酵母菌的动力学吸附行为和各离子间的点位竞争吸附过程.选择面包酵母菌为吸附剂,分别对不同的Pb2+-Cu2+废水进行动力学吸附分析和二级动力学模型计算,同时,也进行SEM/EDS分析.结果表明:在最初60 min时,酵母菌对Pb2+-Cu2+废水中离子已有较好的吸附效果,在整个动力学吸附过程中,酵母菌对废水中离子的吸附关系总是存在qt(Pb2+)＞qt(Pb2+-Cu2+)＞qt(Cu2+) .二级动力学方程计算结果显示:在Cu2+竞争胁迫环境下,增大Cu2+的比例使酵母菌对Pb2+的吸附速率更快,也证明Pb2+在吸附点位竞争过程中的明显优势,EDS测试结果也证实这点.SEM分析发现:酵母菌吸附Cu2+和Pb2+后,菌体出现不规则变形并遭受一定的破坏,有内部物质外泄现象.酵母菌对Cu2+和Pb2+都有一个快速吸附过程,相对而言其对Pb2+的吸附更具优势.
参考文献
| [1] | Changsheng Peng;Hong Meng;Shaoxian Song;Shouci Lu;Alejandro Lopez-Valdivieso .Elimination of Cr(VI)from Electroplating astewater by Electrodialysis Following hemical Precipitation[J].Separation Science and Technology,2004(7):1501-1517. |
| [2] | Berber-Mendoza MS;Leyva-Ramos R;Alonso-Davila P;Fuentes-Rubio L;Guerrero-Coronado RM .Comparison of isotherms for the ion exchange of Pb(II) from aqueous solution onto homoionic clinoptilolite[J].Journal of Colloid and Interface Science,2006(1):40-45. |
| [3] | DING SHAOLAN;ZHAO QUANYONG;REN HUIJUN;ZHAO CHUANCHUAN;JING YAZHUO .EXPERIMENTAL STUDY OF SEPARATING Cr(Ⅵ) USING A MIXED CARRIER EMULSION MEMBRANE[J].Journal of the Society of Leather Technologists and Chemists,2005(3):111-116. |
| [4] | BERNARD S;FAUCHAIS P;JARRIGE J .Process achievement for the treatment by transferred arc of fly ashes from waste incenerators by on line measurement of heavy metal evaporation[J].High Temperature Material Processes,2001,5(02):181-194. |
| [5] | Watanabe T;Jin HW;Cho KJ;Kuroda M .Application of a bio-electrochemical reactor process to direct treatment of metal pickling wastewater containing heavy metals and high strength nitrate[J].Water Science and Technology,2004(8):111-118. |
| [6] | 代淑娟,魏德洲,白丽梅,周东琴,王玉娟,刘文刚.生物吸附-沉降法去除电镀废水中镉[J].中国有色金属学报,2008(10):1945-1950. |
| [7] | SILVA E A;COSSICH E S;TAVARES C G;CARDOZO F L GUIRARDELLO R .Biosorption of binary mixtures of Cr(III) and Cu(Ⅱ) ions by Sargassum sp[J].Brazilian Journal of Chemical Engineering,2003,20(03):213-227. |
| [8] | Akar T;Tunali S .Biosorption characteristics of Aspergillus flavus biomass for removal of Pb(II) and Cu(II) ions from an aqueous solution[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,2006(15):1780-1787. |
| [9] | Chen X;Shi J;Chen Y;Xu X;Xu S;Wang Y .Tolerance and biosorption of copper and zinc by Pseudomonas putida CZ1 isolated from metal-polluted soil.[J].Canadian journal of microbiology,2006(4):308-316. |
| [10] | Sibel Tunali;Tamer Akar;A.Safa Ozcan;Ismail Kiran;Adnan Ozcan .Equilibrium and kinetics of biosorption of lead(II)from aqueous solutions by Cephalosporium aphidicola[J].Separation and Purification Technology,2006(3):105-112. |
| [11] | M. Alimohamadi;L. A. Gomiero;W. S. Filho .Pb(II) and Cu(II) biosorption on Rhizopus arrhizus modeling mono- and multi-component systems[J].Minerals Engineering,2005(13/14):1325-1330. |
| [12] | Ismail Kiran;Tamer Akar;Sibel Tunali .Biosorption of Pb(Ⅱ) and Cu(Ⅱ) from aqueous solutions by pretreated biomass of Neurospora crassa[J].Process biochemistry,2005(11):3550-3558. |
| [13] | Arzu Y.Dursun .A comparative study on determination of the equilibrium,kinetic and thermodynamic parameters of biosorption of copper(II) and lead(II) ions onto pretreated Aspergillus niger[J].Biochemical Engineering Journal,2006(2):187-195. |
| [14] | Ayla Oezer;Dursun Oezer .Comparative study of the biosorption of Pb(Ⅱ), Ni(Ⅱ) and Cr(Ⅵ) ions onto S. cerevisiae: determination of biosorption heats[J].Journal of hazardous materials,2003(1/3):219-229. |
| [15] | 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. |
| [16] | 陈灿,王建龙.酿酒酵母吸附重金属离子的研究进展[J].中国生物工程杂志,2006(01):69-76. |
| [17] | V. Padmavathy;P. Vasudevan;S.C. Dhingra .Biosorption of nickel(Ⅱ) ions on Baker's yeast[J].Process Biochemistry,2003(10):1389-1395. |
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