Oxidative Desulphurization of Diesel Fuels

Palaić, N.

doi:10.15255/cabeq.2015.2184

Cited by 18 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Oxidative desulphurization (ODS) enables ultra-low-sulfur content to be attained in diesel fuels by oxidizing refractory sulfur compounds that are difficult to remove with hydrodesulphurization when the sulfur content to be attained needs to be below 10 mg/kg [48]. On using ODS, sulfurcontaining hydrocarbons can be only oxidized to sulfoxides and sulfones using H2O2 as oxidants in acetonitrile as solvents [49].…”

Section: Discussionmentioning

confidence: 99%

Desulfurization of Dibenzothiophene by Pseudomonas fluorescens (UCP 1514) Leading to the Production of Biphenyl

Silva¹,

Schwartz²,

Souza³

et al. 2018

Recent Insights in Petroleum Science and Engineering

View full text Add to dashboard Cite

Dibenzothiophene (DBT) is a typical recalcitrant thiophenic sulfur component of fuels, and its desulphurization has been a model reaction in the treatment of these compounds. Based on this information, the potential of Pseudomonas fluorescens (UCP 1514) on the desulfurization of dibenzothiphene was studied, in order to use it for reducing the sulfur content of diesel oil in compliance with environmental regulations. The result of biodegradation by the bacteria was determined by undertaking high-performance liquid chromatography of the metabolites produced. These can also be identified by gas chromatography with a mass spectrometry detector, and doing so revealed a sulfur-free product, biphenyl, as the final product of the degradation process. The results showed a decrease of 73% in dibenzothiophene content, which means that P. fluorescens removes sulfur from dibenzothiophene with a good selectivity to form biphenyl. These promising results indicate that P. fluorescens has an interesting potential to degrade sulfur-containing compounds in diesel oil and thereby could help in removing sulfur content from diesel oil. The process of microbial desulfurization described herein can be used particularly after carrying out hydrodesulfurization. Consequently, the sulfur content could be reduced even further. Applying P. fluorescens UCP 1514 in dibenzothiophene could help to understand the nature of the biodegradation process and to achieve the regulatory standards for sulfur level in fossil fuels.

show abstract

Section: Discussionmentioning

confidence: 99%

Desulfurization of Dibenzothiophene by Pseudomonas fluorescens (UCP 1514) Leading to the Production of Biphenyl

Silva¹,

Schwartz²,

Souza³

et al. 2018

Recent Insights in Petroleum Science and Engineering

View full text Add to dashboard Cite

show abstract

“…Various types of extractants were surveyed for extracting sulfones. The extraction agents, including acetonitrile (MeCN), ,,,− ethanol, ,,, methanol, − propanol, , acetone, N , N -dimethylformamide (DMF), ,,,,− 2-ethoxyethanol (C 4 H 10 O 2 ), ,, γ-butyrolactone (C 4 H 6 O 2 ), ,,, dimethyl sulfoxid (DMSO), ,,,, ethylene glycol, ,, polyethylene glycol (PEG), , sulfolane, 1-ethyl-3-methyl imidazolium ethyl sulfate (EMIES), n -methyl-2-pyrrolidone (NMP), ,, n -heptane, n -hexane, caustic soda (NaOH), , furfural, , furfural alcohol, acetic acid, carbon tetrachloride (CCl 4 ), water, ,, [Omim]BF 4 , [Bmim]PF 6 , [C 8 mim]PF 6 , [C 4 mim]PF 6 , [CH 2 COOHPy][HSO 4 ], deep eutectic solvents, − ,, ethyl acetate, dichloroethane, dichloromethane, and the combination of extractants such as dichloroethane/methanol,…”

Section: Catalytic Oxidative–extractive Desulfurizationmentioning

confidence: 99%

Key Factors Affecting the Development of Oxidative Desulfurization of Liquid Fuels: A Critical Review

et al. 2021

View full text Add to dashboard Cite

Complete and effective sulfur removal from liquid fuels is essential to meet the sulfur standard requirements. The oxidative desulfurization (ODS) process has been extensively used for the desulfurization of liquid fuels. In the current study, a comprehensive survey was conducted on the most important factors of ODS, including the types of catalysts, oxidizing agents, extraction solvents, liquid fuels, and process operating conditions. Various types of catalysts, nanocatalysts, magnetic catalysts, photocatalysts, electrocatalysts, biocatalysts, and emulsion catalytic systems have been studied in the ODS process. According to the obtained results, desulfurization catalysts were categorized into 11 groups, including metal oxides, metal complexes, metal free, titanosilicates, ionic liquids, polyoxometalates, metal−organic frameworks, porous aromatic frameworks, covalent organic frameworks, enzymes, and Fenton and Fenton-like catalysts. The advantages and drawbacks of the ODS catalysts were reviewed. The results indicate that the development of experimental design, modeling, and simulation in the ODS process helps to identify the most important variables, facilitate future research, and achieve maximum sulfur removal. Using technologies assisted with ODS such as ultrasound, cold plasma, microwave radiation, hydrodynamic cavitation, photo/light, electrochemistry, magnetic field, and biotechnology can improve sulfur removal and reduce reaction time.

show abstract

“…The oxidation of nitrogen containing aromatic compounds such as quinoline, indole and carbazole is a complex reaction. According to the Palaic et al [16] studied the oxidative desulfurization of diesel fuels for the removal of refractory sulphur compounds which are difficult to remove during conventional hydrotreating. They utilized hydrogen peroxide as oxidant and acetic acid as catalyst and performed reactions in a batch reactor.…”

Section: Introductionmentioning

confidence: 99%

Hydrotreatment Followed by Oxidative Desulfurization and Denitrogenation to Attain Low Sulphur and Nitrogen Bitumen Derived Gas Oils

et al. 2018

View full text Add to dashboard Cite

To lower the sulphur content below 500 ppm and to increase the quality of bitumen derived heavy oil, a combination of hydrotreating followed by oxidative desulfurization (ODS) and oxidative denitrogenation (ODN) is proposed in this work. NiMo/γ-Al2O3 catalyst was synthesized and used to hydrotreat heavy gas oil (HGO) and light gas oil (LGO) at typical operating conditions of 370–390 °C, 9 MPa, 1–1.5 h−1 space velocity and 600:1 H2 to oil ratio. γ-Alumina and alumina-titania supported Mo, P, Mn and W catalysts were synthesized and characterized using X-ray diffractions, N2 adsorption-desorption using Brunauer–Emmett–Teller (BET) method, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR). All catalysts were tested for the oxidation of sulphur and nitrogen aromatic compounds present in LGO and HGO using tert-butyl hydroperoxide (TBHP) as oxidant. The oxidized sulphur and nitrogen compounds were extracted using adsorption on activated carbon and liquid-liquid extraction using methanol. The determination of oxidation states of each metal using XPS confirmed the structure of metal oxides in the catalyst. Thus, the catalytic activity determined in terms of sulphur and nitrogen removal is related to their physico-chemical properties. In agreement with literature, a simplistic mechanism for the oxidative desulfurization is also presented. Mo was found to be more active in comparison to W. Presence of Ti in the support has shown 8–12% increase in ODS and ODN. The MnPMo/γ-Al2O3-TiO2 catalyst showed the best activity for sulphur and nitrogen removal. The role of Mn and P as promoters to molybdenum was also discussed. Further three-stage ODS and ODN was performed to achieve less than 500 ppm in HGO and LGO. The combination of hydrotreatment, ODS and ODN has resulted in removal of 98.8 wt.% sulphur and 94.7 wt.% nitrogen from HGO and removal of 98.5 wt.% sulphur and 97.8 wt.% nitrogen from LGO.

show abstract

Oxidative Desulphurization of Diesel Fuels

Cited by 18 publications

References 14 publications

Desulfurization of Dibenzothiophene by Pseudomonas fluorescens (UCP 1514) Leading to the Production of Biphenyl

Desulfurization of Dibenzothiophene by Pseudomonas fluorescens (UCP 1514) Leading to the Production of Biphenyl

Key Factors Affecting the Development of Oxidative Desulfurization of Liquid Fuels: A Critical Review

Hydrotreatment Followed by Oxidative Desulfurization and Denitrogenation to Attain Low Sulphur and Nitrogen Bitumen Derived Gas Oils

Contact Info

Product

Resources

About