Biodesulfurization of benzonaphthothiophene by an isolated Gordonia sp. IITR100

Chauhan, Akshansha; Ahmad, Abrar; Singh, Surya Pratap; Kumar, Ashwani

doi:10.1016/j.ibiod.2015.05.024

Cited by 33 publications

(19 citation statements)

References 23 publications

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“…Recently, some desulfurization methods have attracted more and more attentions, such as extractive desulfurization (EDS), oxidative desulfurization (ODS), biodesulfurization, adsorptive desulfurization, and photochemical desulfurization, the operating conditions of which are mild and well controllable. In particularly, the ionic liquids (ILs) as desirable extractants in EDS have been wildly used to remove sulfur compounds.…”

Section: Introductionmentioning

confidence: 99%

Deep oxidative–extractive desulfurization of fuels using benzyl‐based ionic liquid

Zhou

Zhang

et al. 2016

AIChE Journal

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in Wiley Online Library (wileyonlinelibrary.com) Four benzyl-based ionic liquids (ILs) were synthetized and used for deep desulfurization of model oil and real diesel fuel. The removal efficiencies of benzothiophene (BT) and dibenzothiophene (DBT) with [Bzmim][NTf 2 ] and [Bzmim][SCN] as extractants are higher than that with [Bzmp][NTf 2 ] and [Bzmp][SCN] as extractants. The desulfurization capability follows the Nernst's Law. A reactive extraction mathematical model for desulfurization was established. An oxidative-extractive two-step deep desulfurization method was developed. DBT was first oxidized by H 2 O 2 with CH 3 COOH as catalyst and then the unoxidized DBT and uncrystallized dibenzothiophene sulfoxide (DBTO 2 ) in model oil were extracted by [Bzmim][NTf 2 ], and finally the removal efficiency was 98.4% after one-stage extraction. Besides, the removal efficiency of 4,6-DMDBT was 96.4% after oxidation and one-stage extraction processes. Moreover, the oxidative-extractive two-step deep desulfurization method was also effective for desulfurization of diesel fuel. The removal efficiency of sulfur reached up to 96% after oxidation and three-stage cross-current extraction processes.

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Section: Introductionmentioning

confidence: 99%

Deep oxidative–extractive desulfurization of fuels using benzyl‐based ionic liquid

Zhou

Zhang

et al. 2016

AIChE Journal

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“…The reaction was stopped by acidification to pH < 2.0 using 2N HCl, and levels of residual BT and formed metabolites were analyzed analytically using High performance Liquid Chromatography (HPLC) and Gas Chromatography-Mass Spectrometry (GC-MS). BT (From Sigma) was used as standard reference (Ahmad et al, 2014;Ahmad et al, 2015;Chauhan et al, 2015). Moreover, to explore the Desulfurization potentialities of this strain, a set of experiments were also conducted at similar incubation conditions (30 °C; pH 7) to test the desulfurization of BNTH (Organic sulfur source) and Sodium Sulphate (inorganic sulfur source).…”

Section: Article Infomentioning

confidence: 99%

“…All the sets of experiment were conducted in triplicates and statistically mean values were used to interpret the results. Standards analysts as a control from Sigma were used for data validation in HPLC and GC (Ahmad et al, 2014;Ahmad et al, 2015;Chauhan et al, 2015).…”

Section: Article Infomentioning

confidence: 99%

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Desulfurization of Benzothiophene by an Isolated Gordonia Sp. Iitr100

Ahmad

Ahmad²,

Khan³

et al. 2021

J microb biotech food sci

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Different recalcitrant aliphatic and aromatic sulfur compounds e.g. Dibenzothiophene, Benzothiophene, and Di-methyl Dibenzothiophene etc. have been remaining in the petrol and diesel, even after hydrodesulfurization, a chemical method of sulfur impurities removal. These sulfur impurities are required to be removed before it is being transported as fuel. So many microbes have been reported in the last decade showing potential for removing the sulfur impurities by using various pathways at ambient temperature, especially 4S pathways. In this study, we describe desulfurization of a model compound Benzothiophene by a Gordonia sp. IITR100 using microbial cell culture and analytical techniques e.g. spectrophotometry and gas chromatography-mass spectrophotometry using column-5. Gordonia sp. IITR100 can grow on Benzothiophene as well as Dibenzothiophene us shown by spectrophotometrical analysis as evident by increased turbidity in aqueous culture. Benzothiophene was metabolized to o-hydroxystyrene as the final product analogous to ‘4S’ pathway as Gas Chromatography-Mass Spectra analysis revealed. Gordonia sp. IITR100 have already been shown desulfurization with heavy organosulfur compounds like Thianthrene, and Benzonahpthothiophene to o-hydroxyphenyl phenylsulfone and 2-phenyl-naphthalene-1-ol respectively. The Gordonia sp. IITR100 have shown potential for Desulfurization of heavy and calcitarant sulfur-compounds suggests its potential (broad substrates range) for use in various tough organosulfur fractions in petroleum. Thus, this bacterial strain could be utilized for commercial purpose of biodesulfurization.

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“…The traditional desulfurization methods are chemical and physical methods. Sulfur-containing heterocyclic aromatic hydrocarbons existed in petroleum are difficult to be removed by conventional methods, but it can be done with biodesulfurization technology [5][6][7][8]. Bio desulfurization is a method to selectively convert the sulfur content of oil into water soluble sulfur compounds by microbial enzymes, and then through the oil and water separation method, the purpose of oil desulfurization will be achieved.…”

Section: Introductionmentioning

confidence: 99%

The optimization of desulfurization conditions by response surface methodology

Chen¹,

Zhao²,

Zang³

et al. 2017

2nd Annual International Conference on Energy, Environmental &Amp; Sustainable Ecosystem Development (EESED 2016)

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Dibenzothiophene and its derivatives are components of high-sulfur crude oil, and these sulfides would reduce the oil quality and increase sulfur dioxide emissions when burned, which will decline environmental quality. Compared with the traditional desulfurization method, biodesulfurization has many advantages, but how to improve the biological desulfurization efficiency has been an important issue. In this study, culture conditions and desulfurization conditions were optimized by response surface methodology (RSM) to improve the biological desulfurization efficiency. Based on the single-factor experiments, Plackeet-Burman method (PB) was used to determine the main factors which would influence the efficiency of desulfurization. And the three main factors were temperature, pH and DBT concentration. Response surface optimization experiments show that when temperature was 29.70°C, initial pH was 7.43, and DBT concentration was 105.47mg/L, the desulfurization rate would be maximum, theoretical maximum degradation rate were 72.32%, and actual degradation rate were 74%. The interaction between the three key factors was significant, the influence degree was DBT concentration> pH> temperature. This study provides a method to improve the biological desulfurization efficiency by optimizing culture conditions and desulfurization conditions.

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Biodesulfurization of benzonaphthothiophene by an isolated Gordonia sp. IITR100

Cited by 33 publications

References 23 publications

Deep oxidative–extractive desulfurization of fuels using benzyl‐based ionic liquid

Deep oxidative–extractive desulfurization of fuels using benzyl‐based ionic liquid

Desulfurization of Benzothiophene by an Isolated Gordonia Sp. Iitr100

The optimization of desulfurization conditions by response surface methodology

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