Scale-up of canola oil degumming
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The chemical degumming of canola oil was optimized using citric acid and maleic anhydride as degumming agents. These chemicals were selected from a group of 54 degumming agents, reported previously. The effect of temperature, chemical addition level, water addition level and contact times was investigated. Best results were obtained at 40 C, using 10 min contact with the chemical, followed by the addition of 2% water and agitation for 20 min.
Chemical degumming reduced the residual phosphorus level from 1049 mg/kg to 50 mg/kg using either maleic anhydride or citric acid. Refining tests gave excellent deodorized or hydrogenated products.
The optimized reaction conditions were applied to 330 kg test batches of oil in the P.O.S. Pilot Plant. Results were identical to those obtained in the laboratory, indicating that the process may be scaled up readily for industrial application.
KeywordsCitric Acid Gossypol Maleic Anhydride Citric Acid Concentration Residual Phosphorus
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