中南民族大学学报（自然科学版）2018，Vol.37Issue(1)：30-34,5.
芽孢杆菌Z-y3对Pb(Ⅱ)吸附特性及机理
Characteristics and Mechanism of Pb(Ⅱ)Adsorption in a Bacillus sp. Strain Z-y3
摘要
Abstract
Bacillus sp. named as Z-y3,which was isolated from heavy metal contaminated soil,had high efficiency of lead removal capacity under acidic condition and its removal mechanism was studied.The results showed that this strain had good removal efficiency and was less affected by environmental pH condition. X-ray diffraction(XRD), scanning electron microscope and energy dispersive spectrometer(SEM-EDS), Fourier transform infrared(FTIR)and X-ray photoelectron spectroscopy(XPS)were used to investigate the adsorption mechanism. It was found that the surface electrostatic adsorption,ion exchange, precipitation by producing alkali played a major role in removal of Pb(Ⅱ). Pb(Ⅱ)was adsorbed by means of the combination of extracellular polymeric substances,polysaccharide hydroxyl and amidogen with Pb (II)and forming insoluble crystal. The strain Z-y3 had higher removal efficiency for low and medium concentration of Pb (II)under wide acidity condition,and thus had a potential application value for the restoration of environmental Pb(Ⅱ) pollution.关键词
生物吸附/重金属Pb(Ⅱ)/吸附机理/芽孢杆菌Key words
biosorption/Pb(Ⅱ)/adsorption mechanism/Bacillus sp.分类
资源环境引用本文复制引用
陈兰洲,赵瑞雪,武艳芳,邓松强,梁亚楠,刘思瑶..芽孢杆菌Z-y3对Pb(Ⅱ)吸附特性及机理[J].中南民族大学学报（自然科学版）,2018,37(1):30-34,5.基金项目
国家自然科学基金资助项目(31370421) （31370421）
湖北省技术创新重大专项(2016ACA162) （2016ACA162）
