期刊论文

Screening of three antimony-resistant soil bacteria and their adsorption property for antimony

Lei, M.

中文

环境科学学报

0253-2468

2020

40

6

2205-2211

10.13671/j.hjkxxb.2020.0087

No.41907015:国家自然科学基金 41671475:国家自然科学基金

本校为第一且通讯机构

从湖南省冷水江锡矿山尾渣土壤中筛选分离出3株具有较高锑耐性的细菌,通过宏观吸附结合X射线光电子能谱( XPS),阐明3株细菌对Sb( Ⅲ)和Sb( Ⅴ)的吸附机制.根据生理生化指标和16S rDNA序列同源性对比,鉴定出1株革兰氏阴性菌和2株革兰氏阳性菌,分别为人苍白杆菌( Ochrobactrum anthropi) 、芽孢杆菌( Bacillus sp.)及蜡状芽孢杆菌( Bacillus cereus).3株细菌都呈杆状,且都能在高锑含量营养液中良好生长.3株细菌对锑的等温吸附符合Langmuir模型,对锑的最大吸附量约为11.0~ 14.3 mg·g~(-1),其中,蜡状芽孢杆菌对锑的吸附能力高于其它两株细菌,3株细菌对Sb( Ⅲ)的吸附量略高于Sb( Ⅴ).XPS结果表明,细...

In this study, three high Sb-tolerance bacteria were screened from the tailing soils in LengshuiJiang City, Hunan Province. Batch adsorption experiments and X-ray photoelectron spectroscopy (XPS) analyses were carried out to investigate the binding mechanisms of Sb(III)/Sb(V) to bacterial cell surfaces. Based on physiological and biochemical property analyses and 16S rDNA sequence homology comparison, a Gram-negative bacterium and two Gram-positive bacteria were identified, namely Ochrobactrum anthropi, Bacillus sp. and Bacillus cereus, respect...