A novel robust CaO/ZnFe2O4 hollow magnetic microspheres heterogenous catalyst for synthesis biodiesel from waste frying sunflower oil

Torkzaban, Sama; Feyzi, Mostafa; Norouzi, Leila

doi:10.1016/j.renene.2022.09.077

Cited by 25 publications

(17 citation statements)

References 61 publications

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“…The results demonstrated a gradual increase in yield as the reaction temperature was elevated. This observation aligned with the expected influence of reaction temperature on reaction kinetics, where higher temperature enhanced the kinetic energy of molecules in the system, facilitating more effective collisions between reactants and leading to an increased yield [35,45,46]. A remarkable yield of approximately 97.36% was attained at a reaction temperature of 65 • C. However, it is noteworthy that operating at such a high temperature surpasses the boiling point of methanol (64.7 • C at atmospheric pressure).…”

Section: Reaction Temperaturesupporting

confidence: 77%

Green Production of Biodiesel from High Acid Value Oil via Glycerol Esterification and Transesterification Catalyzed by Nano Hydrated Eggshell-Derived CaO

Weng,

Tao,

Fei

et al. 2023

Energies

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Biodiesel is a widely recognized and favored liquid biofuel, primarily attributed to its biodegradability and non-toxicity. However, the development of biodiesel is hindered by its high production costs. Here, we developed a method that combines glycerol esterification and transesterification reaction catalyzed using nano-hydrated CaO for the green production of biodiesel from high acid value oil. Waste eggshell was chosen as the calcium source to examine the effect of hydration temperature and duration. The catalysts were optimized using a synthesis process involving under calcination for 3 h at 875 °C, followed by hydration at 60 °C for 6 h and subsequent dehydration at 725 °C. The catalyst loading, alcohol-to-oil mass ratio, reaction temperature, and duration were optimized to 2.5 wt%, 35%, 60 °C, and 2 h, respectively. Under the optimized conditions, the yield of fatty acid methyl ester reached 94.44%. The catalyst was successfully reused eight cycles while maintaining a yield of fatty acid methyl ester at 80.52%. In addition, a comprehensive overview was summarized to compare the catalyst preparation methods, reaction conditions, biodiesel yield, and reusability in the production of biodiesel using eggshell-derived CaO.

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Section: Reaction Temperaturesupporting

confidence: 77%

Green Production of Biodiesel from High Acid Value Oil via Glycerol Esterification and Transesterification Catalyzed by Nano Hydrated Eggshell-Derived CaO

Weng,

Tao,

Fei

et al. 2023

Energies

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“…It was observed that all biodiesel blends showed lower CO emissions than diesel at all loads. Among the various fuels in the LHR engine, MEMSO20 showed a significant reduction of CO than others . This is due to the higher molecular oxygen present in the MEMSO, which makes for better combustion.…”

Section: Resultsmentioning

confidence: 95%

“…Among the various fuels in the LHR engine, MEMSO20 showed a significant reduction of CO than others. 30 This is due to the higher molecular oxygen present in the MEMSO, which makes for better combustion.…”

Section: Resultsmentioning

confidence: 99%

Performance and Emission Analysis of Biodiesel Blends in a Low Heat Rejection Engine with an Antioxidant Additive: An Experimental Study

Venkatesan,

Rajendran,

Murugan

et al. 2023

ACS Omega

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The rapid depletion of crude oil and environmental degradation necessitate the search for alternative fuel sources for internal combustion engines. Biodiesel is a promising alternative fuel for compression ignition (CI) engines due to its heat content and combustion properties. Biodiesel blends are used in various vehicles and equipment, such as cars, trucks, buses, off-road vehicles, and oil furnaces. Biodiesel can reduce emissions from CI engines by up to 75% and improve engine durability due to its high lubricity. However, biodiesel has some drawbacks, including a performance reduction and increased nitrogen oxide emissions. Therefore, this study aims to investigate using environmentally available biodiesel in a low-heat rejection engine and an antioxidant additive to enhance the performance and reduce nitrogen oxide emissions. India currently has several biodiesel sources, including mango seed oil, mahua oil, and pongamia oil, which can be effectively utilized in CI engines by adding l-ascorbic acid. The experimental work involves a single-cylinder 4-stroke water-cooled direct injection CI engine with a power output of 5.2 kW. The engine’s cylinder head, piston head, and valves are coated with lanthanum oxide using the plasma spray coating technique, with a thickness of 0.5 mm. The coated and uncoated engines are tested with different proportions of mahua oil, mango seed oil, and pongamia oil. The results show that the engine’s performance is significantly improved compared to the baseline engine at all loads. Additionally, these biodiesels exhibit a notable reduction in nitrogen oxide emissions when combined with l-ascorbic acid.

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“…The peaks occurring in the range of ~827 to ~732 cm −1 are due to the Sb-O-Sb vibrations [51,52]. The metal oxide Zn 2 Fe 2 O 4 stretching bonds at tetrahedral and octahedral sites are observed at absorption bands in the range of 700-400 cm −1 [51][52][53][54][55]. The spectral band at ~827 cm −1 may be an indication of the presence of organic compounds in the investigated waste material and are assigned to the C-O-C and C-OH ring vibrations of carbohydrates [53].…”

Section: Results Of Fourier-transform Infrared Spectroscopy (Ftir)mentioning

confidence: 98%

Section: Results Of Fourier-transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Possibility of Using Vitreous Enamel Waste in the Construction Industry as the Concept of Cleaner Production

et al. 2023

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Waste vitreous enamels from the heating device production process were used for partial replacement of cement in the mortar and concrete production industry. This waste, due to the high content of heavy metals, is classified as hazardous waste. At the same time, waste vitreous enamels possess pozzolanic activity and belong to class 15 (WEP—generated during the production process of heating devices, premix technology), that is 5 (WETM—generated during the production process of heating devices, classic technology) of pozzolanic materials. The purpose of this research was to develop new composites from these wastes to reduce the deposition of the toxic compounds and reduce their environmental impact. The chemical and physical-chemical characterization and pozzolanic activity of the raw waste materials were studied by a mixture of complementary methods, as well as physical-mechanical characterization and a leaching test of mortar and concrete composites. The results indicate that the replacement of cement with WEP up to 30%, or with WETM up to 20% does not significantly affect the quality of concrete in comparison to the quality of the reference concrete prepared with 100% cement. The leaching test showed no significant release of toxic elements for both obtained composites.

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A novel robust CaO/ZnFe2O4 hollow magnetic microspheres heterogenous catalyst for synthesis biodiesel from waste frying sunflower oil

Cited by 25 publications

References 61 publications

Green Production of Biodiesel from High Acid Value Oil via Glycerol Esterification and Transesterification Catalyzed by Nano Hydrated Eggshell-Derived CaO

Green Production of Biodiesel from High Acid Value Oil via Glycerol Esterification and Transesterification Catalyzed by Nano Hydrated Eggshell-Derived CaO

Performance and Emission Analysis of Biodiesel Blends in a Low Heat Rejection Engine with an Antioxidant Additive: An Experimental Study

Possibility of Using Vitreous Enamel Waste in the Construction Industry as the Concept of Cleaner Production

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