College of Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China.
State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), Qingdao, 266580, People's Republic of China.
Appl Microbiol Biotechnol. 2018 Nov;102(21):9089-9103. doi: 10.1007/s00253-018-9342-5. Epub 2018 Sep 10.
To reduce the harm caused to the environment by fuel combustion and meet the increasingly stringent emission standards, the sulfur content of fuels should be reduced. Dibenzothiophene, benzothiophene, and their derivatives are sulfur-containing components of fuels that are difficult to desulfurize and can therefore cause great environmental damage. Biodesulfurization is a desulfurization method that has the advantage of being able to remove dibenzothiophene and its derivatives removed easily under conditions that are relatively mild when compared with hydrodesulfurization. This paper introduces the advantages of thermophilic biodesulfurization compared with mesophilic biodesulfurization; analyzes the desulfurization mechanism, including the desulfurization pathways and enzymic systems of desulfurization bacteria; and discusses the application of biodesulfurization in oil desulfurization. The main problems existing in biodesulfurization and possible solutions are also analyzed in this paper. Biological desulfurization is a promising method for desulfurization; accordingly, more studies investigating biodesulfurization of actual oil are needed to enable the industrialized application of biodesulfurization.
为了减少燃料燃烧对环境造成的危害，满足日益严格的排放标准，应降低燃料中的硫含量。二苯并噻吩、苯并噻吩及其衍生物是燃料中难以脱硫的含硫成分，因此会对环境造成很大的破坏。生物脱硫是一种脱硫方法，与加氢脱硫相比，在相对温和的条件下，生物脱硫具有能够容易地去除二苯并噻吩及其衍生物的优点。本文介绍了与中温生物脱硫相比，高温生物脱硫的优势；分析了脱硫机制，包括脱硫细菌的脱硫途径和酶系；并讨论了生物脱硫在石油脱硫中的应用。本文还分析了生物脱硫中存在的主要问题及可能的解决办法。生物脱硫是一种很有前途的脱硫方法；因此，需要对实际油的生物脱硫进行更多的研究，以实现生物脱硫的工业化应用。
