生物催化脱除柴油中有机硫的研究  

Study on Biodesulfurization from Diesel Oil

作　　者：李玉光[1] 张倩倩[1] 马洁[1] 郭雪清[1] 刘梦友[1] 

机构地区：[1]首都师范大学化学系,北京100037

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)

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 %.

关 键 词：生物脱硫 二苯并噻吩 2-羟基联苯 菌种筛选 

分 类 号：TE626.24[石油与天然气工程—油气加工工程]