解脂假丝酵母对重金属工业废水的吸附特性

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摘要

利用解脂假丝酵母对Cr(Ⅵ)、Ni(Ⅱ)和Cu(Ⅱ)共存的模拟重金属废水及3种实际重金属废水进行了微生物吸附,结果表明,pH、吸附时间和菌浓度等均是显著的影响因素.Cr(Ⅵ)、Ni(Ⅱ)和Cu(Ⅱ)的去除均符合准一级和准二级动力学模型,其中准二级模型的拟合效果最理想,证明该菌种对重金属的吸附包括了多个步骤,其中化学吸附是限速步骤.解脂假丝酵母对共存重金属的生物吸附效果理想,1g·L^-1菌体在120min时,对18.7～37.86mg·L^-1Cr、2.39～9.21mg·L^-1Cu、2.27～9.87mg·L^-1Ni和0.43～1.32mg·L^-1Zn的去除率分别为81.6%～84.6%、84.0%～100%、84.1%～100%和93.9%～100%.菌体的蛋白质、脂质和多糖均参与了重金属吸附,起作用的主要功能团是-OH、-NH₂、-CH₂、-CH₃、-COOH、-CHO、C=C、-PO₄^3-和-SO₃H.

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	叶佩青
	檀笑

关键词 ：重金属, 生物吸附, 解脂假丝酵母

Abstract：

The biosorption of simulation wastewater with coexisted Cr(Ⅵ),Ni(Ⅱ) and Cu(Ⅱ),and three kinds of actual wastewaters by Candida lipolytica was investigated.The results showed that initial pH,contact time and biosorbent dosage were the major influencing factors.Research on the dynamics reflected that the biosorption complied with both the first-order and the second-order kinetic models,and the second-order kinetic models had higher correlation coefficients,confirming that the biosorption process included multiple steps and chemical adsorption was the rate-determining step.After the wastewater containing 18.7-37.86 mg·L^-1 of Cr,2.39-9.21 mg·L^-1 of Cu,2.27-9.87 mg·L^-1 of Ni and 0.43-1.32 mg·L^-1 of Zn was absorbed with 1 g·L^-1 biosorbent for 120 min,the biosorption rates on the above metals were 81.6%-84.6%,84.0%-100%,84.1%-100% and 93.9%-100%,respectively.The results suggested that C.lipolytica was an effective strain to remove combined pollutants from aqueous solution.Moreover,proteins,lipids and carbohydrates of the biosorbent participated in the binding of these heavy metals.The main functional groups were -OH,-NH₂,-CH₂,-CH₃,-COOH,-CHO,C=C,-PO₄^3- and -SO₃H.

Key words： Heavy metals biosorption Candida lipolytica

收稿日期: 2011-10-25

:	Q14
	X172

基金资助:中央级公益性科研院所基本科研业务专项项目(2603060902N)

引用本文:

叶佩青1, 檀笑2*, 詹志薇3. 解脂假丝酵母对重金属工业废水的吸附特性[J]. , 2011, 30(5): 541-546.
YE Pei-qing1, TAN Xiao2. Biosorption of wastewater containing heavy metals by Candida lipolytica. , 2011, 30(5): 541-546.

链接本文:

http://www.ecolsci.com/CN/Y2011/V30/I5/541

[1] Andreazza R,Pieniz S,Wolf L,Lee M K,Camargo F A O,Okeke B C.Characterization of copper bioreduction and biosorption by a highly copper resistant bacterium isolated from copper-contaminated vineyard soil[J].Science of the TotalEnvironment,2010,408(7):1501-1507.
[2] Babu M M G,Gunasekaran P.Production and structural characterization of crystalline silver nanoparticles from Bacillus cereus isolate[J].Colloids and Surfaces B:Biointerfaces,2009,b74(1):191-195.
[3] Chen C,Wang J L.Removal of Pb²⁺,Ag⁺,Cs⁺ and Sr²⁺ from aqueous solution by brewery's waste biomass[J].Journal of Hazardous Materials,2008,151(1):65-70.
[4] Han X,Wong Y S,Wong M H,Tam N F Y.Biosorption and bioreduction of Cr(Ⅵ) by a microalgal isolate,Chlorella miniata[J].Journal of Hazardous Materials,2007,146(1-2):65-72.
[5] Hsieh J L,Chen C Y,Chiu M H,Chein M F,Chang J S,Endo G,Huang C C.Expressing a bacterial mercuric ion binding protein in plant for phytoremediation of heavy metals[J].Journal of Hazardous Materials,2009,161(2-3):920-925.
[6] Izquierdo M,Gabaldón C,Marzal P,(A)lvarez-Hornos F J.Modeling of copper fixed-bed biosorption from wastewater by Posidonia oceanica[J].Bioresource Technology,2010,101(2):510-517.
[7] Khani M H,Keshtkar A R,Ghannadi M,Pahlavanzadeh H.Equilibrium,kinetic and thermodynamic study of the biosorption of uranium onto Cystoseria indica algae[J].Journal of Hazardous Materials,2008,150(3):612-618.
[8] Basha S,Murthy Z V P,Jha B.Biosorption of hexavalent chromium by chemically modified seaweed,Cystoseira indica[J].Chemical Engineering Journal,2008,137(3):480-488.
[9] Mungasavalli D P,Viraraghavan T,Jin Y C.Biosorption of chromium from aqueous solutions by pretreated Aspergillus niger:Batch and column studies[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2007,301(1-3):214-223.
[10] 王建龙,陈灿.生物吸附法去除重金属离子的研究进展[J].环境科学学报,2010,30(4):673-701.
[11] Barros AJ M,Prasad S,Leite V D,Souza AG.Biosorption of heavy metals in upflow sludge columns[J].Bioresource Technology,2007,98(7):1418-1425.
[12] Özer A,Gürbüz G,Çalimli A,Körbahti B K.Biosorption of copper(Ⅱ)ions on Enteromorpha prolifera:Application of response surface methodology(RSM)[J].Chemical Engineering Journal,2009,146(3):377-387.
[13] 叶锦韶,尹华,彭辉,张娜.高效生物吸附剂处理含铬废水[J].中国环境科学,2005,25(2):245-248.
[14] Sun X F,Wang S G,Zhang X M,Chen J P,Li X M,Gao B Y,Ma Y.Spectroscopic study of Zn²⁺ and Co²⁺ binding to extracellular polymeric substances(EPS) from aerobic granules[J].Journal of Colloid and Interface Science,2009,335(1):11-17.
[15] Yu J X,Tong M,Sun X M,Li B H.A simple method to prepare poly(amic acid)-modified biomass for enhancement of lead and cadmium adsorption[J].Biochemical Engineering Journal,2007,33(2):126-133.
[16] Garip S,Gozen A C,Severcan F.Use of fourier transform infrared spectroscopy for rapid comparative analysis of Bacillus and Micrococcus isolates[J].Food Chemistry,2009,113(4):1301-1307.
[17] Yin H,He B Y,Peng H,Ye J S,Yang F,Zhang N.Removal of Cr(Ⅵ) and Ni(Ⅱ) from aqueous solution by fused yeast:Study of cations release and biosorption mechanism[J].Journal of hazardous materials,2008,158(2-3):568-576.
[18] Yang L,Chen J P,Biosorption of hexavalent chromium onto raw and chemically modified Sargassum sp[J].Bioresource Technology,2008,99(2):297-307.