Intensification of diesel oxidative desulfurization via hydrodynamic cavitation

Baradaran, Soroush; Sadeghi, Mohammad Taghi

doi:10.1016/j.ultsonch.2019.104698

Cited by 37 publications

(22 citation statements)

References 32 publications

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“…The interaction graph between the model inputs (electric field intensity (a), electric field time (b), and hydrodynamic exposure time (c) relative to the model output ( E. coli reduction rate)) is shown in Figure 5. In this Figure, the model output is plotted by changing one input while the other inputs are considered constant (Baradaran & Sadeghi, 2019). Accordingly, the rate of logarithmic decline of E. coli is more sensitive to changes in parameter B.…”

Section: Resultsmentioning

confidence: 99%

The investigation and optimization of two combined pasteurization methods of ultrasonic‐pulse electric field and hydrodynamic‐pulse electric field on sour cherry juice using RSM‐TOPSIS

Samani

Behruzian

Khoshtaghaza

et al. 2020

J Food Process Preserv

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In this research, sour cherry juice (SCJ) was treated using a combination of the Ultrasound‐Pulsed electric field (UP) wave and Hydrodynamic‐Pulsed electric field (HP) systems. The main objective of this study was to investigate the effect of the combination of the pulsed electric field, ultrasonic wave, and hydrodynamic as new non‐thermal technologies on the inactivation of microorganisms, energy changes in one cycle of E. coli inactivation, and the quality of SCJ. The range of experimental conditions was as follows: electrical field intensity: 5–10 kV/cm, electric field time: 5–35 s, ultrasound power: 100–200 W, ultrasonic exposure time: 3–5 min, and hydrodynamic exposure time: 3–9 min. The results of the treatments indicated that the combination methods maintained the total phenolic content, anthocyanins, and vitamin C compared to the conventional method. By TOPSIS, a comparison between two combination methods showed that the pasteurization with UP performed better than the HP method. Practical applications One of the most effective ways for the utilization of nutritional benefits of fruits is to use their extracts or juices. Also, to kill any harmful bacteria, most juices thermally are pasteurized. Where such treatments often lead to a substantial decrease in their quality (vitamins, phenolics, anthocyanins, etc.). For this goal, researchers are following up on new methods to dispel the adverse effects of thermal pasteurization. The present research aimed to assay the simultaneous effect of the ultrasonic‐AC electric field and hydrodynamic‐AC electric field to eliminate microorganisms and preserve the quality of SCJ. The current research recommends a novel and combined method for SCJ pasteurization and this method can benefit the food industry.

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Section: Resultsmentioning

confidence: 99%

The investigation and optimization of two combined pasteurization methods of ultrasonic‐pulse electric field and hydrodynamic‐pulse electric field on sour cherry juice using RSM‐TOPSIS

Samani

Behruzian

Khoshtaghaza

et al. 2020

J Food Process Preserv

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“…3 shows the conformance of the test data to the software predicted data for the biodiesel yield. Such conformity tests the assumption of constant variance and is suitable for finding inaccurate values assumed by the predicted model [62]. As Fig.…”

Section: Rsm Analytical and Statistical Analysismentioning

confidence: 85%

“…In this model, the effect of all variables except time × molar ratio (ac), time × rotor and stator distance (ad), catalyst concentration × rotor and stator distance (bd), molar ratio × rotor and stator distance (cd), and the square of rotor and stator distance (d 2 ) are significant at 10% level. F-value of 0.87 for lack of fit indicates that it is not significant due to the net error [62,63]. The F-Value of the model is 522.06, which indicates that the used model is significant, emphasizing the appropriate choice and importance of the selected model.…”

Section: Rsm Analytical and Statistical Analysismentioning

confidence: 99%

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The rotor-stator type hydrodynamic cavitation reactor approach for enhanced biodiesel fuel production

Samani

Behruzian

Najafi

et al. 2021

Fuel

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Today renewable energies such as biodiesel have considerable role in the bio-based economy. Long production time and low efficiency are a number of problems in biodiesel production that is essential to be considered when designing and operating the biodiesel production systems. In this study, using safflower oil in a hydrodynamic cavity reactor, biodiesel fuel was produced in the possible shortest time and maximum efficiency. The effect of reaction time (30, 60 and 90 s), concentration of potassium hydroxide catalyst (0.75%, 1% and 1.25%), alcohol to oil ratio (6, 8 and 10) and rotor-stator distance (1 cm, 2 cm and 3 cm) on the reaction yield were analyzed. The results were analyzed by response surface methodology. Among the independent variables, reaction time was the most important factor on the reaction yield, which had a positive impact on the quality of methyl ester. The optimum values obtained were: 63.88 s reaction time, 0.94% catalyst concentration, 1: 8.36 alcohol to oil molar ratio, 1.53 cm rotor-stator distance, and 89.11% yield. Several properties and compounds of biodiesel obtained were measured and compared with ASTM D6751 (American Society for Testing and Materials) and EN 14214 standard (European Standards). The results showed that most of the features conform to the afore-mentioned standard. Therefore, transesterification of safflower oil with a hydrodynamic cavitation reactor can function as a good alternative to the diesel.

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“…The degradation is stimulated when HC is combined with other techniques such as various advanced oxidation processes (AOP) [4] , [11] . The phenomenon can also be utilized for more novel applications such as hydrodynamic cavitation assisted Oxidative Desulfurization (HCAOD) process [12] , [13] . Several researchers studied the degradation of Reactive Red 120 dye [14] , Coomassie Brilliant Blue [15] , Congo red [16] , reactive orange 4 dye [17] , imidacloprid [18] , commercial pesticide [19] , degradation of Acid Red 88 dye [20] were used the same dimensions of Venturi.…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of a cavitating device for Congo red decolorization: Experimental investigation and CFD simulation

Abbas-Shiroodi

Sadeghi

Baradaran

2021

Ultrasonics Sonochemistry

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Intensification of diesel oxidative desulfurization via hydrodynamic cavitation

Cited by 37 publications

References 32 publications

The investigation and optimization of two combined pasteurization methods of ultrasonic‐pulse electric field and hydrodynamic‐pulse electric field on sour cherry juice using RSM‐TOPSIS

The investigation and optimization of two combined pasteurization methods of ultrasonic‐pulse electric field and hydrodynamic‐pulse electric field on sour cherry juice using RSM‐TOPSIS

The rotor-stator type hydrodynamic cavitation reactor approach for enhanced biodiesel fuel production

Design and optimization of a cavitating device for Congo red decolorization: Experimental investigation and CFD simulation

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