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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (24): 2858-2862. 上一篇    下一篇

研究论文

利用两种微生物的协同作用进行柴油的深度脱硫

马洁*, 王长水, 张倩倩, 张秀兰, 郭雪清   

  1. (首都师范大学化学系 北京 100037)
  • 投稿日期:2006-08-01 修回日期:2007-10-20 发布日期:2007-12-28
  • 通讯作者: 马洁

Deep Biodesulfurization of Diesel Oil by Cooperation of Two Kinds of Microbes

MA Jie*; WANG Chang-Shui; ZHANG Qian-Qian; ZHANG Xiu-Lan; GUO Xue-Qing   

  1. (Department of Chemistry, Capital Normal University, Beijing 100037)
  • Received:2006-08-01 Revised:2007-10-20 Published:2007-12-28
  • Contact: MA Jie

PDF

700

被引次数

14

红串红球菌通过4S途径降解二苯并噻吩(DBT)产生 和2-羟基联苯(2-HBP). 和2-HBP的存在对红串红球菌的进一步脱硫有抑制作用, 加入脱 和2-HBP 的菌株可以解除 和2-HBP对红串红球菌脱硫反应的抑制, 使该反应继续向生成产物的方向移动, 从而提高其脱硫率. 在脱硫菌和专一性降解 的水解好氧菌(代号: PYS)的协同作用下可以使高浓度的DBT从1.142 mmol/L降到0.0468 mmol/L, 降解率达到95.9%, 比没有加PYS时提高32%的脱除率. 在油水比为1∶9的条件下, 可以将柴油中的硫从554 mg/mL降到306 mg/mL, 降解率达到44.8%.

关键词: 生物协同脱硫, 二苯并噻吩(DBT), 2-羟基联苯(2-HBP), 柴油

Rhodococcus erythropolis was able to selectively oxidize dibenzothiophene (DBT) to sulfate ( ) and 2-hydroxybiphenyl (2-HBP) by metabolic pathway (4S pathway). The existence of restrains further desulfurization by Rhodococcus erythropolis. Addition of the other kind of desulfurization bacterium could remove the restraining by , making the reaction continue to the final products and improving the desulfurization ratio. The high concentration of DBT was reduced from 1.142 to 0.0468 mmol/L by a cooperative desulfurization of the desulfurization bacterium Rhodococcus erythropolis with a hydrolysis aerobic bacterium (No. PYS), which is an expert at degrading . The desulfurization ratio reached 95.9%, which is improved by 32% compared to that without PYS. In a mixture with ratio 1∶9 of water to diesel fuel the sulfur content was reduced from 554 to 306 mg/mL, reaching a 44.8% desulphurization.

Key words: desulfurization by bacterial cooperation, dibenzothiophene (DBT), 2-hydroxybiphenyl (2-HBP), diesel oil