Using ethanol for continuous biodiesel production with trace catalyst and CO2 co-solvent

Hassan, Aso A.; Alhameedi, Hayder A.; Smith, Joseph D.

doi:10.1016/j.fuproc.2020.106377

Cited by 17 publications

(7 citation statements)

References 42 publications

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“…The F -value for the terms incorporated in the model was 5654.05 with p -values < 0.0001, suggesting that the model was significant. As stated by Hassan et al , 40 the p -value represents the probability of error in order to verify the significance of each regression coefficient. The main design indicates that the terms significantly affecting the production of biodiesel corresponded to X 1 , X 2 , X 3 and the relationship between the main factors ( X 1 X 2 , X 1 X 3 , and X 2 X 3 ), while there were no insignificant quadratic terms ( X 1 2 , X 2 2 , and X 3 2 ) on biodiesel production.…”

Section: Resultsmentioning

confidence: 99%

Transition metal oxide (NiO, CuO, ZnO)-doped calcium oxide catalysts derived from eggshells for the transesterification of refined waste cooking oil

et al. 2021

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Section: Resultsmentioning

confidence: 99%

Transition metal oxide (NiO, CuO, ZnO)-doped calcium oxide catalysts derived from eggshells for the transesterification of refined waste cooking oil

et al. 2021

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“…The results proved that adding a cosolvent increases the reaction rate since almost all reactions were done in 20 min. On the other hand, there was only a 78% conversion rate when cosolvent was not present (Hassan et al 2020 ). The effect of cosolvent on transesterification has also been looked into for systems with different catalysts (Chumuang and Punsuvon 2017 ; Laskar et al 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Production of biodiesel from waste fish fat through ultrasound-assisted transesterification using petro-diesel as cosolvent and optimization of process parameters using response surface methodology

Parida,

Pali,

Chaturvedi

et al. 2024

Environ Sci Pollut Res

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Biodiesel is a highly promising and viable alternative to fossil-based diesel that also addresses the urgent need for effective waste management. It can be synthesized by the chemical modification of triglycerides sourced from vegetable origin, animal fat, or algal oil. The transesterification reaction is the preferred method of producing biodiesel. However, the non-miscibility of alcohol and oil layer causes excessive utilization of alcohol, catalyst, and a substantial reacting time and temperature. In the current investigation, transesterification of waste fish oil was performed with petro-diesel as cosolvent, under the influence of ultrasound energy. The combination of both techniques is a unique and efficient way to minimize the mass transfer limitations considerably and hence reduces the parameters of the reaction. It is also a sincere effort to comply with the principles of green chemistry. The optimum reaction conditions were obtained using response surface methodology (RSM) that were as follows: molar ratio of methanol to oil 9.09:1, catalyst concentration of 0.97 wt%, cosolvent concentration of 29.1 wt%, temperature 60.1℃, and a reacting time 30 min. Under these listed conditions, 98.1% biodiesel was achievable, which was in close agreement with the expected result. In addition, the cosolvent removal step from the crude biodiesel was also eliminated as it could be employed as a blended fuel in CI engines.

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“…Mohadesi et al [13] used acetone as a cosolvent, the biodiesel yield reached 97.2%. Hassan et al [14] added supercritical CO 2 as a co-solvent; the highest biodiesel yield (98.1%) was obtained after 20 min at 240 • C and 12 MPa. Cosolvent in the reaction system might result in a homogeneous reaction without interphase mass transfer, which can improve the reaction rate and obtain a higher biodiesel yield in a relatively shorter time.…”

Section: Introductionmentioning

confidence: 99%

Biodiesel Preparation without a Cosolvent in an Opposite-Side Micro-Fixed-Bed Reactor

et al. 2023

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In the process of preparing biodiesel using microreactors, cosolvents and homogeneous catalysts are generally used, which adds to the separation cost. Hence, this study explored the use of an opposite-side feed micro-fixed-bed reactor with an inner diameter of 2 mm to produce biodiesel by the transesterification of soybean oil and methanol without any cosolvent, in which a fixed solid base acted as catalyst and obstacles. A biodiesel yield of 99.4% was achieved when the methanol-to-oil molar ratio was 12, the temperature was 70 °C, and the residence time was 8.05 min. A mixing study was conducted for this microreactor through computational fluid dynamics (CFD) simulations. The results showed that the best mixing index could reach 0.94 within 25 mm (length). Then, the transesterification kinetics in this reactor were found to be consistent with the proposed pseudo-homogeneous secondary reaction model. With the kinetics data and mixed-model, the biodiesel yield could be predicted. The simulated results were consistent with the experimental data.

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Using ethanol for continuous biodiesel production with trace catalyst and CO2 co-solvent

Cited by 17 publications

References 42 publications

Transition metal oxide (NiO, CuO, ZnO)-doped calcium oxide catalysts derived from eggshells for the transesterification of refined waste cooking oil

Transition metal oxide (NiO, CuO, ZnO)-doped calcium oxide catalysts derived from eggshells for the transesterification of refined waste cooking oil

Production of biodiesel from waste fish fat through ultrasound-assisted transesterification using petro-diesel as cosolvent and optimization of process parameters using response surface methodology

Biodiesel Preparation without a Cosolvent in an Opposite-Side Micro-Fixed-Bed Reactor

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