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Introduction - one train for many feeds Biodiesel producers increasingly work with acid-esterified biodiesel and pyrolysis biofuels - both can carry sulfur and cold-flow issues that complicate compliance. Sulzer’s distillation addresses cold-flow and purity; when paired with adsorption, it reliably delivers <10 ppm sulfur. What makes these feeds challenging? Acid-Esterified biodiesel Residual contaminants and sulfur species can carry through post-reaction, requiring robust fi
