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May 9, 2026ProcessesOpen Access

Optimizing Biodiesel Synthesis: From Process Parameters to the Distinct and Sub-Additive Effects of Water and Iron in Supercritical Methanol

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Authors

KZKe Zhang阙阙志刚JLJie Luo

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Overview

Randomized trial investigates optimal biodiesel conversion in oleic acid using supercritical methanol, highlighting low-cost production implications.

Key Points

  • This research aims to optimize biodiesel synthesis by analyzing the effects of process parameters and additives.
  • Investigated reaction temperature (200–290 °C), residence time (0–75 min), and methanol-to-oleic acid molar ratio (6:1–35:1) in a batch reactor.
  • Conducted orthogonal experiments to determine optimal reaction conditions.
  • Examined the effects of varying water and iron contents on conversion rates.
  • Under optimal conditions (250 °C, 30 min, 15:1 molar ratio), conversion reached 76.8%.
  • Water concentrations above 5.0 wt% inhibited conversion, while iron had a saturating effect beyond 5.0 wt%.
  • Co-addition of 5.0 wt% water and 5.0 wt% iron resulted in enhanced but sub-additive conversion effects.

Cite This Study

Zhang et al. (2026) studied this question.

synapsesocial.com/papers/69fed090b9154b0b82877acfhttps://doi.org/10.3390/pr14091498
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