Reduction of Tellurite to Elemental Tellurium by a Strain of Purple Non-sulfur Bacteria

摘要：

　　A strain of purple non-sulfur bacteria (PNSB) named TX618 was isolated from the sediment near the sewage outfall of a metal refinery plant in Sichuan Province of China, and identified as Rhodopseudomonas palustris on the basis of phenotypic characterization and 16S rRNA analysis.This paper focused on the reduction of tellurite to elemental tellurium by TX618 strain.The results showed that the strain TX618 was highly resistant to toxic tellurite, and was able to reduce tellurite to elemental tellurium under anaerobic and light conditions.The high capacity in the reduction of tellurite could sustain wide variations in pH (5-9),temperature (20-40 ℃), light intensity (1500-3000 Lux) and initial tellurium concentration (30-180 mg Na2TeO3 1-1).This is the first study to observe that Rhodopseudomonas palustris can reduce tellurite to elemental tellurium, which might be interesting for an application in the field of bioremediation or nanoparticle biosynthesis.

关键词： elemental tellurium PNSB reduction rhodopseudomonas palustris tellurite

作者: XIE Hongguan WU Lichuan CHEN Mao XIA Wei

作者单位: Department of Bioengineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China

会议类型: 国际会议

会议名称: The 2017 International Symposium on Environmental Science and Technology (2017环境科学与技术国际会议)

会议地点: 北京

会议语种:英文

页码: 78-81

在线出版日期: 2017-09-19（万方平台首次上网日期，不代表论文的发表时间）