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Biodiesel effluent demands treatment to enhance their organoleptic properties and to reduce the levels of organic load and toxicity. A step of coagulation-flocculation using 0.50 mmol L−1 Fe(NO3)3 was applied at the natural pH of the effluent (pH 2.9) removing its turbidity and apparent color. A solar/photo-Fenton process was employed to minimize the chemical oxygen demand – COD, when multiple additions...
The feasibility of biodiesel effluent treatment combining coagulation-flocculation with a photolytic process was evaluated, being the photolytic process involving the irradiation of the effluent by UV-C, or by UV-C irradiation with simultaneous addition of H2O2 (H2O2/UV-C). The coagulation-flocculation was performed at the natural pH of the effluent (pH 2.9) using different Fe3+ salts (chloride, nitrate...
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