Scholarlink

<p>This study investigates a sustainable approach to biodiesel production by using bioethanol derived from potato processing waste as the alcohol source in the transesterification of waste cooking oil. This integrated strategy valorizes two major waste streams, used cooking oil and starchy agri-food residues, thereby enhancing both environmental and economic sustainability. The objective was to optimize the transesterification process and evaluate the influence of key parameters on biodiesel yield and quality. A base-catalyzed transesterification reaction was optimized using a 6:1 bioethanol-to-oil molar ratio. A composite factorial design assessed the effects of two variables: reaction time and potassium hydroxide concentration. Regression modeling and response surface analysis were used to identify optimal conditions and evaluate variable interactions. The model revealed negative linear effects for both variables, mainly attributed to saponification and ester hydrolysis. However, a positive interaction term suggested that extended reaction time could mitigate the impact of catalyst excess. The highest biodiesel yield (87.3%) was obtained at 1.55% KOH and 1&#xa0;h of reaction time. Notably, the bioethanol used exhibited a purity of 98.6°GL, demonstrating that high biodiesel yields can be achieved despite its lower purity compared with commercial-grade ethanol. Experimental validation closely matched the model’s predicted yield (87.13%), confirming the robustness of the optimization. The produced biodiesel met EN 14,214 and ASTM D6751 standards, with a density of 0.86&#xa0;g/cm³, viscosity of 3.9&#xa0;mm²/s, flash point of 135&#xa0;°C, and acid number of 0.1&#xa0;mg KOH/g. These results demonstrate the technical feasibility of biodiesel production through integrated agro-food waste valorization and highlight its potential environmental benefits.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Design and optimization of biodiesel production using agro-waste derived bioethanol

  • 期刊论文

  • 发表日期：

    2026年7月1日

查看全文
  • Rahma Bessah,
  • Fetta Danane,
  • Rhiad Alloune,
  • Madina Kechkar,
  • Sabah Abada,
  • Latifa Tebbouche,
  • Lilia Guetni,
  • Sarah Faci,
  • Yasmine Touahria

摘要

This study investigates a sustainable approach to biodiesel production by using bioethanol derived from potato processing waste as the alcohol source in the transesterification of waste cooking oil. This integrated strategy valorizes two major waste streams, used cooking oil and starchy agri-food residues, thereby enhancing both environmental and economic sustainability. The objective was to optimize the transesterification process and evaluate the influence of key parameters on biodiesel yield and quality. A base-catalyzed transesterification reaction was optimized using a 6:1 bioethanol-to-oil molar ratio. A composite factorial design assessed the effects of two variables: reaction time and potassium hydroxide concentration. Regression modeling and response surface analysis were used to identify optimal conditions and evaluate variable interactions. The model revealed negative linear effects for both variables, mainly attributed to saponification and ester hydrolysis. However, a positive interaction term suggested that extended reaction time could mitigate the impact of catalyst excess. The highest biodiesel yield (87.3%) was obtained at 1.55% KOH and 1 h of reaction time. Notably, the bioethanol used exhibited a purity of 98.6°GL, demonstrating that high biodiesel yields can be achieved despite its lower purity compared with commercial-grade ethanol. Experimental validation closely matched the model’s predicted yield (87.13%), confirming the robustness of the optimization. The produced biodiesel met EN 14,214 and ASTM D6751 standards, with a density of 0.86 g/cm³, viscosity of 3.9 mm²/s, flash point of 135 °C, and acid number of 0.1 mg KOH/g. These results demonstrate the technical feasibility of biodiesel production through integrated agro-food waste valorization and highlight its potential environmental benefits.