Effect of Process Parameters on Yield of Biofuel Production from Waste Virgin Coconut Oil

Yotsomnuk, Panadda; Skolpap, Wanwisa

doi:10.4186/ej.2018.22.6.21

Cited by 10 publications

(8 citation statements)

References 25 publications

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“…The yield of diesel is a function of the hydroprocessing operating parameters and the composition of the feedstock. − In this section, we developed a simple statistical linear relationship between the diesel oil yield and process parameters (i.e., temperature, pressure, LHSV, catalyst lifetime) and the percentage of canola oil in the original blend feedstocks for all 20 diesel samples. A stepwise regression was used to fit the linear regression model.…”

Section: Resultsmentioning

confidence: 99%

Detailed Characterization of Diesel Fractions from Co-Hydroprocessing Vegetable Oil and Petroleum Heavy Vacuum Gas Oil Blends

2021

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In this study, 20 diesel fractions were obtained by co-hydroprocessing blends of low-grade canola oil and Canadian oil sand bitumen-derived heavy vacuum gas oil (HVGO) at different canola oil/HVGO blending ratios, reaction temperatures and pressures, and liquid hourly space velocities. A commercial hydroprocessing catalyst was used in the experiments under typical commercial operating conditions. The obtained diesel fractions were fully characterized by using standard ASTM methods and advanced two-dimensional gas chromatography. Characterization results of the diesel fractions showed that, with the increased canola oil content in the feed blends, the contents of aromatics and cycloparaffins decreased and the content of isoparaffins remained relatively constant. In contrast, the content of normal paraffins (n-paraffins) increased. The observed increase in the n-paraffins in the diesel fractions was attributed to the hydrodeoxygenation and hydrodecarboxylation of triglycerides in the canola oil. The n-paraffins in the diesel were mostly n-heptadecane (product of hydrodecarboxylation) and n-octadecane (product of hydrodeoxygenation) with traces of other lighter or heavier n-paraffins. The formation of n-heptadecane and n-octadecane resulted in improved physical and combustion properties of the diesel fractions, such as density, boiling point distribution, and cetane index/number.

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Section: Resultsmentioning

confidence: 99%

Detailed Characterization of Diesel Fractions from Co-Hydroprocessing Vegetable Oil and Petroleum Heavy Vacuum Gas Oil Blends

2021

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“…Yotsomnuk and Skolpap [97] Soybean T = 200-280 C, Rt = 2-4 h, interval of 0.5 h, Hp = 100 bar Ni-W Liquid yield 81.76% and nalkanes 32.29%…”

Section: Metal Catalystsmentioning

confidence: 99%

“…The biofuel conversion decreased with increasing temperature, this was attributed to that the HZMS-1 catalyst contained only an acidic site short of a metallic site. [97,112] Hydrogen pressure During hydrocracking, pure H 2 can be used in combination with other inert gases like argon (Ar), nitrogen (N 2 ), helium (He), and so forth. An increasing reaction H 2 pressure is known to be most favourable in increasing the conversion of the aromatic into by-products that are saturated, thus increasing the jet fuel and diesel quality with a higher/elevated viscosity index, which is exceptional.…”

Section: Hydrocracking Operating Parametersmentioning

confidence: 99%

Hydrocracking of non‐edible vegetable oil and waste cooking oils for the production of light hydrocarbon fuels: A review

Ratshoshi,

Mukaya,

Nkazi

2024

Can J Chem Eng

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The high demand for biofuels by surfacing economies with environmental issues has resulted in a more in‐depth search for new biofuel feedstocks. Non‐edible oils have become the centre of investigation as biofuel feedstocks since they do not compete with food sources. This review evaluates hydrocracking as a biofuel production method and further elucidates different feedstocks, the effects of hydrocracking catalysts, and operating parameters to obtain optimum yields and selectivity of desired products. The bifunctional catalyst mechanism is also explained. The hydrocracking technique is found to be more advantageous than other biofuel production techniques such as transesterification and pyrolysis due to its ability to produce valuable products of better quality and with higher yields. Coke formation is one of the challenges faced by hydrocracking despite that it can be reduced by high hydrogen pressure; this will increase the cost of the entire process.

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“…Waste coconut oil contains large hydrocarbon molecules that cannot be used as biofuel. Hydrocracking breaks down these large molecules into smaller ones that can be biofueled [1]. The production of biofuel from leftover coconut oil has various advantages for the environment and the economy.…”

Section: Introductionmentioning

confidence: 99%

Beach Sand-derived Mesoporous Silica by Hydrothermal Process for Hydrocracking Waste Coconut Oil to Biofuel

Salamah,

Hanum,

Trisunaryati

et al. 2023

JKPK

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<p>Hydrocracking, a key process for converting waste coconut oil into biofuel, requires efficient catalysts. This study investigates the synthesis of mesoporous silica catalysts using a hydrothermal process. Dodecyl amine, sourced from beach sand, serves as a template. The hydrothermal synthesis involved durations (12, 15, 18, 21, and 24 hours) and dodecyl amine concentrations (0.25 M, 0.5 M, 0.1 M), conducted at 40 °C for 30 minutes. The synthesized catalysts were then characterized for their surface area, pore volume, and diameter. Among the synthesized samples, those treated for 15 hours displayed optimal total acidity at 0.88 mmol/g. The catalysts synthesized with a dodecyl amine concentration of 0.025 M exhibited superior characteristics, including a specific surface area of 233 m²/g, a pore volume of 0.47 cc/g, and an average pore diameter of 2.10 nm. These findings underscore the efficacy of mesoporous silica catalysts in hydrocracking, particularly in converting large hydrocarbon molecules into smaller, more valuable biofuel molecules. Comparative analysis with similar research highlights the significance of these findings in the field of sustainable energy. The optimal catalyst conditions yielded a liquid fraction of over 70% for 0.25 M dodecyl amine. This efficiency in converting waste coconut oil into biofuel signifies the potential of mesoporous silica catalysts in advancing environmentally friendly energy sources. This research contributes to the growing knowledge of renewable energy, offering promising avenues for developing sustainable and eco-friendly energy solutions.</p>

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Effect of Process Parameters on Yield of Biofuel Production from Waste Virgin Coconut Oil

Cited by 10 publications

References 25 publications

Detailed Characterization of Diesel Fractions from Co-Hydroprocessing Vegetable Oil and Petroleum Heavy Vacuum Gas Oil Blends

Detailed Characterization of Diesel Fractions from Co-Hydroprocessing Vegetable Oil and Petroleum Heavy Vacuum Gas Oil Blends

Hydrocracking of non‐edible vegetable oil and waste cooking oils for the production of light hydrocarbon fuels: A review

Beach Sand-derived Mesoporous Silica by Hydrothermal Process for Hydrocracking Waste Coconut Oil to Biofuel

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