Recent advances in biodiesel production from agricultural products and microalgae using ionic liquids: Opportunities and challenges

Ong, Hwai Chyuan; Tiong, Yong Wei; Goh, Brandon Han Hoe; Gan, Yong Yang; Mofijur, M.; Fattah, I.M. Rizwanul; Chong, Cheng Tung; Alam, Md. Asraful; Lee, Hwei Voon; Silitonga, A.S.; Mahlia, T.M.I.

doi:10.1016/j.enconman.2020.113647

Cited by 121 publications

(45 citation statements)

References 220 publications

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“…The NOx increases with the increase in combustion chamber temperature. The addition of fuel additives to improve fuel properties, thereby the combustion characteristics, have become a recent trend in research due to obvious benefits [16][17][18][19]. It has been reported that nano-additives effectively reduce the agglomeration during blending with fuel and improve engine characteristics due to the large surface air-to-volume ratio, favourable thermophysical properties and high thermal conductivity [20,21].…”

Section: Introductionmentioning

confidence: 99%

Influence of Silica Nano-Additives on Performance and Emission Characteristics of Soybean Biodiesel Fuelled Diesel Engine

Gavhane¹,

Kate²,

Soudagar

et al. 2021

Energies

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The present study examines the effect of silicon dioxide (SiO2) nano-additives on the performance and emission characteristics of a diesel engine fuelled with soybean biodiesel. Soybean biofuel was prepared using the transesterification process. The morphology of nano-additives was studied using scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDS). The Ultrasonication process was used for the homogeneous blending of nano-additives with biodiesel, while surfactant was used for the stabilisation of nano-additives. The physicochemical properties of pure and blended fuel samples were measured as per ASTM standards. The performance and emissions characteristics of different fuel samples were measured at different loading conditions. It was found that the brake thermal efficiency (BTE) and brake specific fuel consumption (BSFC) increased by 3.48–6.39% and 5.81–9.88%, respectively, with the addition of SiO2 nano-additives. The carbon monoxide (CO), hydrocarbon (HC) and smoke emissions for nano-additive added blends were decreased by 1.9–17.5%, 20.56–27.5% and 10.16–23.54% compared to SBME25 fuel blends.

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Section: Introductionmentioning

confidence: 99%

Influence of Silica Nano-Additives on Performance and Emission Characteristics of Soybean Biodiesel Fuelled Diesel Engine

Gavhane¹,

Kate²,

Soudagar

et al. 2021

Energies

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“…A novel homogenous catalysis route is present to produce biodiesel from feedstock with high FFAs in one step by using acidic ionic liquids (ILs) [72,73]. Although ionic liquids are costlier than regular catalysts, such as NaOH, KOH, and H 2 SO 4 , they offer advantages of reusability and biodegradability.…”

Section: Acid-base Catalyzed Two-step Processmentioning

confidence: 99%

Current State and Perspectives on Transesterification of Triglycerides for Biodiesel Production

Salaheldeen

Mariod²,

Aroua

et al. 2021

Catalysts

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Triglycerides are the main constituents of lipids, which are the fatty acids of glycerol. Natural organic triglycerides (viz. virgin vegetable oils, recycled cooking oils, and animal fats) are the main sources for biodiesel production. Biodiesel (mono alkyl esters) is the most attractive alternative fuel to diesel, with numerous environmental advantages over petroleum-based fuel. The most practicable method for converting triglycerides to biodiesel with viscosities comparable to diesel fuel is transesterification. Previous research has proven that biodiesel–diesel blends can operate the compression ignition engine without the need for significant modifications. However, the commercialization of biodiesel is still limited due to the high cost of production. In this sense, the transesterification route is a crucial factor in determining the total cost of biodiesel production. Homogenous base-catalyzed transesterification, industrially, is the conventional method to produce biodiesel. However, this method suffers from limitations both environmentally and economically. Although there are review articles on transesterification, most of them focus on a specific type of transesterification process and hence do not provide a comprehensive picture. This paper reviews the latest progress in research on all facets of transesterification technology from reports published by highly-rated scientific journals in the last two decades. The review focuses on the suggested modifications to the conventional method and the most promising innovative technologies. The potentiality of each technology to produce biodiesel from low-quality feedstock is also discussed.

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“…Biodiesel having similar functional properties can be considered as one of the viable options to replace diesel fuel [104]. Biodiesel is produced from vegetable oil using the "transesterification" process, as is also known as fatty acid methyl ester (FAME) [105,106]. In this process, in order to chemically break the molecule of the raw renewable oil (triglyceride) into methyl or ethyl esters of the renewable oil, alcohol such as methanol or ethanol is used.…”

Section: Biodiesel As a Diesel Substitutementioning

confidence: 99%

State-of-the-Art of Strategies to Reduce Exhaust Emissions from Diesel Engine Vehicles

et al. 2021

Self Cite

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Compression ignition engines play a significant role in the development of a country. They are widely used due to their innate properties such as high efficiency, high power output, and durability. However, they are considered one of the key contributors to transport-related emission and have recently been identified as carcinogenic. Thus, it is important to modify the designs and processes before, during, and after combustion to reduce the emissions to meet the strict emission regulations. The paper discusses the pros and cons of different strategies to reduce emissions of a diesel engine. An overview of various techniques to modify the pre-combustion engine design aspects has been discussed first. After that, fuel modifications techniques during combustion to improve the fuel properties to reduce the engine-out emission is discussed. Finally, post-combustion after-treatment devices are briefly discussed, which help improve the air quality of our environment.

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Recent advances in biodiesel production from agricultural products and microalgae using ionic liquids: Opportunities and challenges

Cited by 121 publications

References 220 publications

Influence of Silica Nano-Additives on Performance and Emission Characteristics of Soybean Biodiesel Fuelled Diesel Engine

Influence of Silica Nano-Additives on Performance and Emission Characteristics of Soybean Biodiesel Fuelled Diesel Engine

Current State and Perspectives on Transesterification of Triglycerides for Biodiesel Production

State-of-the-Art of Strategies to Reduce Exhaust Emissions from Diesel Engine Vehicles

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