摘要
国际上对燃料油的硫含量要求越来越严格,生物脱硫法(BDS)相比于传统的加氢脱硫(HDS)具有更广阔的应用前景.我们从自然界筛选到一组能专一性脱除二苯并噻吩(DBT)中硫元素的菌株YS-S-4,高效液相色谱(HPLC)对代谢产物的分析表明该菌能选择性地脱除DBT中的硫,生成2-羟基联苯(2-HBP).以DBT为硫源考察了pH值,碳源,氮源,硫源等对菌株YS-S-4生长及脱硫效果的影响.并在最佳条件下,能脱除正十六烷模拟柴油相中83·14%的DBT硫.
Because of increasingly stringent regulations concerning the sulfur content of motor fuels, sulfur removal by biocatalytic desulfurization （BDS）is often considered as a potential alternative to conventional deep hydrodesulfurization （HDS）process used in the refinery industry. A mixed bacterium YS-S-4 was newly isolated from nature in our laboratory, which can utilize dibenzonthiophene （DBT）as a sole source of sulfur. The major metabolite is identified as 2- hydroxybiphenyl（2-HBP） by HPLC analysis. Effects of initial pH, sources of carbon, nitrogen and sulfur of the culture media were investigated by using DBT as the sole source of sulfur in aqueous phase. Under optimized condition, the stain can degrade DBT in n-Hexadecane as model diesel oil, and the desulfurization efficiency is about 83.14 %.
出处
《首都师范大学学报（自然科学版）》
2005年第3期48-52,共5页
Journal of Capital Normal University：Natural Science Edition
基金
北京市教委基金资助项目(2002KJ094)
关键词
生物脱硫
二苯并噻吩
2-羟基联苯
菌种筛选
biodesulfurization, dibenzonthiophene, 2-hydroxybiphenyl, screening of strains
