微紫青霉菌吸附锌的特性研究  

Biosorption characteristics of Zn^(2+) by Penicillium janthinellum

作　　者：杜宪正 王涛 邹路易 郁红艳 顾文秀 滕跃 DU Xianzheng;WANG Tao;ZOU Luyi;YU Hongyan;GU Wenxiu;TENG Yue(Jiangsu Key Laboratory of Anaerobic Biotechnology,School of Environmental and Civil Engineering,Jiangnan University,Wuxi Jiangsu 214122;School of Chemical and Material Engineering,Jiangnan University,Wuxi Jiangsu 214122)

机构地区：[1]江南大学环境与土木工程学院,江苏省厌氧生物技术重点实验室,江苏无锡214122 [2]江南大学化学与材料工程学院,江苏无锡214122

出　　处：《环境污染与防治》2018年第12期1359-1363,共5页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.21307043);中国博士后基金资助项目(No.2016M590411);江苏省博士后基金资助项目(No.1601230C);江南大学自主科研项目(No.JUSRP11525).

摘　　要：选用通过稀释涂布平板法筛选出的对重金属锌有较高耐性的微紫青霉菌(Penicillium janthinellum)BC109-2,研究了锌胁迫下菌株的生长状况以及不同吸附条件对吸附效果的影响。对该菌株吸附锌的条件进行了优化,并对该菌株的吸附性能进行了分析。结果表明,BC109-2在Zn^(2+)初始摩尔浓度为3mmol/L时生长状况最好,最适pH为8,饱和吸附时间为10h。扫描电子显微镜结果显示,BC109-2菌丝吸附锌后表面呈褶皱状。傅立叶红外光谱结果显示,BC109-2在吸附锌过程中,—COOH、C=O以及芳烃基团等发挥了重要作用,且在最佳条件下该菌株对锌的吸附量达到217.47mg/g。可见,该微紫青霉菌对锌具有较高抗性及吸附性能,具有极大潜力成为重金属污染水体生物修复技术中的高效耐受吸附菌种。In this study,the Penicillium janthinellum BC109-2with high tolerance to heavy metal Zn^2+was selected by the spread plate method.The effect of Zn^2+stress on the growth of the strain and the effect of adsorption conditions on the adsorption of Zn^2+were studied.In addition,the conditions of adsorption were optimized,and the biosorption properties of the strain were analyzed.The results showed that under the optimum pH(pH=8)and the saturated adsorption time(10h),the adsorption capacity reached217.47mg/g when the initial concentration of Zn^2+was3mmol/L.Besides,the results of scanning electron microscopy showed there was fold on the surface of strain BC109-2after adsorption and results of Fourier transform infrared spectroscopy indicated that-COOH,C=O and aromatic hydrocarbon groups played an important role in the adsorption process.The strain had high resistance and biosorption properties to Zn^2+,and it had the potential to be a highly effective and tolerant species in bioremediation of heavy metal polluted water.

关 键 词：环境工程学 吸附 锌 吸附特性 

分 类 号：X703[环境科学与工程—环境工程] X172