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<p>The growing demand for sustainable biofuels has increased interest in efficient methods for extracting oil from non-edible feedstocks such as safflower. This study compares chemical and mechanical extraction techniques, including Soxhlet extraction, maceration, hydraulic pressing, and screw pressing, for biodiesel feedstock production. A Box–Behnken response surface methodology was applied to optimize screw press operating conditions. The optimal parameters were identified at 172.5&#xa0;°C and a screw press speed of 1400&#xa0;rpm, with an energy consumption of 3.86&#xa0;W-hour and a yield of approximately 19% in 29.8&#xa0;s. The oils extracted using four extraction techniques were characterized using gas chromatography-mass spectrometry and Fourier-transform infrared spectroscopy, confirming their suitability for biodiesel applications. Among the evaluated methods, a screw press proved to be the most energy-efficient and time-saving method, owing to the elimination of solvent use and its lower operational costs compared to conventional chemical methods. These findings highlight the potential of mechanical extraction as a cost-effective and environmentally sustainable approach for biodiesel production. Overall, this study provides a comparative and optimized framework for safflower oil extraction, supporting the transition toward greener and scalable biofuel production technologies.</p>

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Chemical and mechanical extraction for egyptian safflower bio-oil with a performance and economic analysis for renewable fuel applications

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月26日

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  • Mahmoud A. Kamel,
  • Magdy K. Zahran,
  • Samya El-Sherbiny,
  • Said M. El-Sheikh,
  • Hassan M. M. Mustafa

摘要

The growing demand for sustainable biofuels has increased interest in efficient methods for extracting oil from non-edible feedstocks such as safflower. This study compares chemical and mechanical extraction techniques, including Soxhlet extraction, maceration, hydraulic pressing, and screw pressing, for biodiesel feedstock production. A Box–Behnken response surface methodology was applied to optimize screw press operating conditions. The optimal parameters were identified at 172.5 °C and a screw press speed of 1400 rpm, with an energy consumption of 3.86 W-hour and a yield of approximately 19% in 29.8 s. The oils extracted using four extraction techniques were characterized using gas chromatography-mass spectrometry and Fourier-transform infrared spectroscopy, confirming their suitability for biodiesel applications. Among the evaluated methods, a screw press proved to be the most energy-efficient and time-saving method, owing to the elimination of solvent use and its lower operational costs compared to conventional chemical methods. These findings highlight the potential of mechanical extraction as a cost-effective and environmentally sustainable approach for biodiesel production. Overall, this study provides a comparative and optimized framework for safflower oil extraction, supporting the transition toward greener and scalable biofuel production technologies.