Intensification of oxidative desulfurization of gas oil by ultrasound irradiation: Optimization using Box–Behnken design (BBD)

Jalali, Mohammad Reza; Sobati, Mohammad Amin

doi:10.1016/j.applthermaleng.2016.10.015

Cited by 68 publications

(30 citation statements)

References 42 publications

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“…For all these reasons, ultrasound assisted ODS process appears promising for sulfur removal. Nevertheless, the application of ultrasound assisted oxidative desulfurization (UAOD) has been lately (after 2011) reported in the literature for low sulfur light gas oil (<0.22 wt.%S) [92][93][94][95] as well as model feedstock (S < 1000 ppm) [69,96,97].…”

Section: Ultrasound Technologymentioning

confidence: 99%

Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review

et al. 2018

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The demand for clean fuels is increasing throughout the world, with more stringent environmental regulations for transportation fuels including marine fuels, particularly regarding their sulfur content. Moreover, the quality of crude oil and derived petroleum cuts is getting lower while fossil fuels are still in high demand. Heavy oils are characterized by high sulfur content where most sulfur is found in bulky thiophenic structures difficult to remove using conventional high pressure hydrodesulfurization process. However they appeared more reactive in oxidative desulfurization (ODS) process, carried out at mild conditions without hydrogen pressure. This review focuses for the first time on the heavy fuels initially containing more than 0.5 wt.%S and upgraded by the ODS process. Different attractive approaches of the literature towards ODS are reported using homogeneous and heterogeneous catalysis. Recent developments in ODS assisted with ultrasound technology and the use of ionic liquid to enhance ODS efficiency will be fully detailed and discussed to better understand their viability when applied to high sulfur content, high viscosity, and high boiling point feeds.

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Section: Ultrasound Technologymentioning

confidence: 99%

Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review

et al. 2018

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“…Moreover, as a favorable type of design for supporting a response surface, BBD is further employed to assess second-order multivariate technique in terms of three-level synsemantic factorial design [31]. BBD has been generally performed to optimize the extraction process of bioactive components from natural raw materials since it offers sufficient information about the main and interaction effects, which cannot be easily evaluated by univariate techniques [32,33]. Additionally, the model outcomes can be clearly exhibited on the response surface plot.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Microwave-Assisted Extraction Saponins from Sapindus mukorossi Pericarps and an Evaluation of Their Inhibitory Activity on Xanthine Oxidase

Deng

Liu

Zou

2019

Journal of Chemistry

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A microwave-assisted extraction (MAE) method was applied to separate saponins from Sapindus mukorossi pericarps. The most important factors of the six extraction parameters were selected using Plackett–Burman designs; therefore, the further extraction procedure was optimized using the Box–Behnken designs; meanwhile, the optimum processing parameters and well-pleasing saponins extraction rate were inferred. The final operation conditions were the ethanol concentration of 40%, soaking time of 3 h, particle size of 80–100 meshes, extraction time of 13 min, solvent-solid ratio of 19 mL/g, and microwave power of 425 W. Based on the optimal extraction parameters, the extraction rate of the saponins by means of MAE technique reached 280.55 ± 6.81 mg/g, which exceeds yields acquired using conventional manners. Saponins from S. mukorossi have obvious xanthine oxidase inhibitory properties in vitro compared with allopurinol. The saponins displayed a type of competitive inhibition of xanthine oxidase. In conclusion, a MAE technique in association with a response surface design provides an efficient extraction tactics, which could sufficiently isolate saponins from S. mukorossi pericarps; further, this technique could be applied to the dissociation of other bioactive substances from plant sources. In addition, the saponins may be a promising alternative to conventional medicine to treat gout and other inflammation-associated disorders to mitigate the side effects of traditional drugs.

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“…The sulfur removal efficiency obtained was 96.2% after the fourth extraction cycle using acetonitrile solvent. The author also found that higher desulfurization efficiency was obtained within a shorter reaction time as compared to the traditional mixing ODS process [61]. Some studies have also reported the successful result of ultrasound assisted oxidative desulfurization of fuel oil performed under mild reaction conditions [62][63][64][65][66][67].…”

Section: Ultrasound-assisted Oxidation Systemmentioning

confidence: 91%

A Comprehensive Review on Catalytic Oxidative Desulfurization of Liquid Fuel Oil

2019

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The production of green fuel oil is of the utmost importance for maintaining a healthy life and environment in the current world. Effective and complete removal of sulfur refractory compounds (such as 4,6-dimethyldibenzothiophene and other alkyl-substituted thiophene derivatives) from fuel oil is essential to meet the new requirements of sulfur standards. Several techniques have been proposed for desulfurization of fuel oil, such as hydrodesulfurization (HDS), selective adsorption, extractive distillation, biodesulfurization, and oxidative desulfurization (ODS). The removal of sulfur by the HDS process requires higher investment costs, high reaction temperature (up to 400 °C), and high pressure (up to 100 atm) reactors. On the other hand, studies have shown that the ODS process is remarkably successful in the removal of sulfur under mild reaction conditions. This review article presents a comparative analysis of various existing catalytic oxidation techniques: acetic acid/formic acid catalytic oxidation, heteropolyacid (HPA) catalytic oxidation, ionic liquid catalytic oxidation, molecular sieve catalytic oxidation, polyoxometalates catalytic oxidation, titanium catalytic oxidation, and ultrasound-assisted oxidation systems, as well as discusses research gaps, and proposes important recommendations for future challenges.

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Intensification of oxidative desulfurization of gas oil by ultrasound irradiation: Optimization using Box–Behnken design (BBD)

Cited by 68 publications

References 42 publications

Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review

Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review

Optimization of Microwave-Assisted Extraction Saponins from Sapindus mukorossi Pericarps and an Evaluation of Their Inhibitory Activity on Xanthine Oxidase

A Comprehensive Review on Catalytic Oxidative Desulfurization of Liquid Fuel Oil

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