De-emulsion after diesel oil biodesulfurization

MA Ting; LEE Kyngho; WANG Renjing; LI Guoqiang; LIANG Fenglai; LIU Rulin

您当前的位置：

首页 >

文章列表页 >

De-emulsion after diesel oil biodesulfurization

更新时间：2025-12-10

- De-emulsion after diesel oil biodesulfurization
- CIESC Journal Issue 4, Pages: 694-698(2005)
- 作者机构：
  
  南开大学生命科学学院,天津,300071
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 April 2005，
  
  Published：25 April 2005
- 稿件说明：
移动端阅览
MA Ting, LEE Kyngho, WANG Renjing, et al. De-emulsion after diesel oil biodesulfurization[J]. CIESC Journal, 2005, (4): 694-698.
DOI：

MA Ting, LEE Kyngho, WANG Renjing, et al. De-emulsion after diesel oil biodesulfurization[J]. CIESC Journal, 2005, (4): 694-698. DOI：

摘要

柴油生物脱硫(BDS)反应后往往会产生稳定的O/W型三相（柴油/发酵液/菌体）乳状液，为了满足工业应用的需要，就必须将三相乳状液进行破乳，从而获得BDS反应后的柴油.分析了几种破乳剂对BDS后三相乳状液的破乳效果及破乳机理，发现几种典型的水溶性破乳剂、醇类甚至用于BDS的红球菌自身都具有良好的破乳活性，其中具有强表面活性、强亲水性和合适的密度的乙醇与离心操作相结合的方法最适宜该乳状液的破乳，破乳后离心分离的菌体与原菌具有相近的脱硫活性，可用于再次脱硫. 同时探索了乙醇作为破乳剂的最佳条件，向三相乳状液中加入4％的工业乙醇，并借助4000 r8226;min-1离心力的作用可使破乳率达到97.8％.GC-MS实验证实乙醇破乳不影响油品的热值.

Abstract

There exists three-phase (diesel oil/bacteria cell/aqueous phase)O/W emulsion after diesel oil biodesulfurization(BDS).For commercial application

the emulsion must be de-emulsified to yield diesel oil after BDS.In fact

this is the last process of BDS.Several de-emulsifiers applicable to this three-phase O/W emulsion

such as several typical water-soluble de-emulsifiers

methanol

ethanol

and the Rhodococcus sp. pellets which can desulfurize diesel oil were tested.Ethanol was the best

and the de-emulsification mechanism with different de-emulsifiers was discussed. 4% ethanol

as a de-emulsifier could separate oil by centrifuge because of its strong surfactivity

high hydrophilic property and appropriate density.The diesel oil recovery could be increased by centrifugal separation from 60% to almost 100%.GC-MS analysis showed ethanol addition for de-emulsification did not affect the composition of alkenes.It was also noted that the pellets of DS-3 centrifuged showed the same growth rate and dibenthiophene desulfurization activity as the original bacteria

so they could be re-used as desulfurization biocatalyst.

关键词

Keywords

references

Views

222

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Agglomeration and demulsification of emulsions by ultrasound

Effect of fusel on dehydration reaction of ethanol to ethylene catalyzed by La/HZSM-5

Impact of operating and physical parameters on ultrasonic demulsification of waste oil

Production of d-xylose from cottonseed hull byethanol solventing-out crystallization

Selectivity of oxidative desulfurization of gasoline and diesel fuel using catalytic oxidation method with activated carbon

Related Author

SUN Liyun

ZHENG Guoqiang

LV Xiaoping

ZHOU You

HAN Yuwang

HU Yaochi

YU Dinghua

HU Yi

Related Institution

南京工业大学超声化学工程研究所

南京工业大学材料化学工程国家重点实验室

合肥通用机械研究院

中国石油大学（华东）机电工程学院

石河子大学化学化工学院

⁰