Optimization of extractive desulfurization of Malaysian diesel fuel using response surface methodology/Box–Behnken design

Mokhtar, Wan Nur Aini Wan; Bakar, Wan Azelee Wan Abu; Ali, Rusmidah; Kadir, Abdul Aziz Abdul

doi:10.1016/j.jiec.2015.05.033

Cited by 22 publications

(6 citation statements)

References 18 publications

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“…When the amount of extractant increases, the predicted point lies at the red-yellow region, signalling a relatively high EE. The contour plot reported by Mokthar et al and Almashjary et al also confirmed the prediction of optimum point for extractant to oil volume ratio [19,38].…”

Section: Effect Of Des Volume Ratiosupporting

confidence: 72%

“…On the other hand, integrating ODS in EDS system (EODS) will promote the oxidation of sulfur into sulfone components, which can be easily extracted into the solvent phase [15][16][17][18]. Selection of extractant is nonetheless challenging since some of the conventional solvents are highly flammable and volatile [19][20][21]. Therefore, ionic liquids (ILs), which are composed of cationic and anionic salts, have been introduced as green solvent since it has extremely low vapor pressure, customizable polarity, minimum flammability, and substantial stability for various applications [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

“…By implementing RSM, the total experiments can be minimized and a synergistic influence of each independent variable could be monitored along the process. A Box-Behnken design RSM was employed by Mokhtar et al, to optimize EDS using dimethylformamide as extractant [19]. Based on the response contour of interacting variables, they found that the increase of extractant volume and extraction time both gave a positive effect towards EDS performance with a maximum removal of 67.5%.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Liquid Polymer Eutectic Mixture for Integrated Extractive-Oxidative Desulfurization of Fuel Oil: An Optimization Study via Response Surface Methodology

et al. 2020

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Hydrodesulfurization (HDS) has been commercially employed for the production of ultra-low sulfur fuel oil. However, HDS is unable to remove sterically hindered sulfur-containing compounds such as dibenzothiophene (DBT) and benzothiophene (BT). An alternative way to remove sulfur is via extractive desulfurization system (EDS) using deep eutectic solvents (DES) as sustainable extractant. In this work, liquid polymer DES was synthesized using tetrabutylammonium chloride (TBAC) and poly(ethylene glycol) 400 (PEG) with different molar ratios. Response surface methodology (RSM) was applied to study the effect of independent variables toward extraction efficiency (EE). Three significant operating parameters, temperature (25–70 °C), DES molar ratio (1–3), and DES volume ratio (0.2–2.0), were varied to study the EE of sulfur from model oil. A quadratic model was selected based on the fit summary test, revealing that the extraction efficiency was greatly influenced by the amount of DES used, followed by the extraction temperature and PEG ratio. Although molar ratio of DES was less sensitive towards EDS performance, the EE was much higher at lower PEG ratio. For the realization of an energy-efficient EDS system, optimization of EDS parameters and EE was carried out via a desirability tool. At 25 °C, 1:1 molar ratio of TBAC to PEG, and DES-to-model-oil-volume ratio of 1, removal of DBT reached as high as 79.01%. The present findings could provide valuable insight into the development of practicable EDS technology as a substitute to previous HDS process.

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Section: Effect Of Des Volume Ratiosupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Liquid Polymer Eutectic Mixture for Integrated Extractive-Oxidative Desulfurization of Fuel Oil: An Optimization Study via Response Surface Methodology

et al. 2020

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“…For response surface modeling of GF modification by UV-grafting copolymerization, the Box-Behnken design (BBD) (Mokhtar et al, 2015) was carried out with the 5 variables shown in Table 1. Compared to other designs in RSM, BoxBehnken (BBD) is the most-frequently used design in pioneering studies.…”

Section: Design Of Simulation and Optimization Experiments By Using Rsmmentioning

confidence: 99%

Modifying glass fiber surface with grafting acrylamide by UV-grafting copolymerization for preparation of glass fiber reinforced PVDF composite membrane

Luo

Zhong

Yang

et al. 2016

Journal of Environmental Sciences

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“…A combination of oxidative and extractive processes can significantly enhance diesel desulfurization. , During the ODS process, the sulfur-containing compounds with low polarity are converted into their corresponding sulfoxides and sulfones, with high polarity. ,− In this stage, applying ultrasound irradiation can considerably improve mixing of the phases and hence, increase the interphase mass-transfer rate. After the oxidation stage, the sulfur-containing compounds can be extracted from the oxidized diesel using a polar solvent in the extraction stage. − Some applicable polar solvents are dimethylformamide, dimethylsulfoxide, and acetonitrile . An appropriate solvent should be selective to extract the desired compounds such as the sulfur-containing compounds.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Extractive Desulfurization of Diesel Oil in a Continuous Oldshue–Rushton Column Pilot Plant

et al. 2019

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In this study, a continuous sulfur extraction process in a pilot plant Oldshue–Rushton column has been studied, and its operating cost has been optimized, where the feed of the column was earlier produced in an oxidative desulfurization reactor. Dimethylformamide was used as a polar solvent to remove the sulfur-containing compounds of the oxidized diesel in the extraction column. The effects of agitation speed (100–200 rpm) and inlet flow rate of the solvent to the column (33–165 mL/min) on the holdup, sulfur removal, diesel recovery, and solvent recovery were investigated, utilizing the response surface methodology. The operating cost during the continuous-flow extraction process, consisting of the chemical cost, electricity cost, and the health cost related to the SO2 emission, was also applied as a criterion to optimize the process. The best performance of the extraction process was achieved at ambient temperature, where the inlet flow rate of the oxidized diesel was 99 mL/min, agitation speed was 107 rpm, and inlet flow rate of the solvent was 35 mL/min. In these conditions, dispersed phase holdup, sulfur removal, diesel recovery, and solvent recovery were 0.0101, 92.75, 91.80, and 96.90%, respectively. In addition, a considerable improvement in the sulfur removal as well as chemical consumption cost was achieved.

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Optimization of extractive desulfurization of Malaysian diesel fuel using response surface methodology/Box–Behnken design

Cited by 22 publications

References 18 publications

Liquid Polymer Eutectic Mixture for Integrated Extractive-Oxidative Desulfurization of Fuel Oil: An Optimization Study via Response Surface Methodology

Liquid Polymer Eutectic Mixture for Integrated Extractive-Oxidative Desulfurization of Fuel Oil: An Optimization Study via Response Surface Methodology

Modifying glass fiber surface with grafting acrylamide by UV-grafting copolymerization for preparation of glass fiber reinforced PVDF composite membrane

Optimization of Extractive Desulfurization of Diesel Oil in a Continuous Oldshue–Rushton Column Pilot Plant

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