鱼糜加工废水中蛋白质回收工艺的优化

Study on Protein Recovery Process Optimization of Surimi Processing Wastewater

摘要:

针对目前鱼糜加工企业排放废水中含有的大量蛋白质,通过选取一种絮凝剂,以其添加量、絮凝温度、絮凝时间、絮凝pH值进行单因素实验,然后用Design-Expert软件的Box-Behnken中心组合设计进行四因素三水平响应面实验。结果表明:三氯化铁添加量0.13 g/L,絮凝温度18.44℃,时间5 h,pH 5.44,此时蛋白质回收率最高,达86.94%。该法具有蛋白质回收率高,回收蛋白质安全卫生,操作简便,成本低等特点。

Abstract:

As to a large number of proteins from discharge wastewater of Surimi processing enterprises,A single factor experiment about the dosage、temperature、 time、 pH can be operated by selecting a flocculant.Then Design-Expert software is a experimental containing four factors and three levels.The result shows that:the optimal recovery process is adding the amount of ferric chloride 0.13 g/L,the flocculation temperature is 18.44 ℃,the time is 5 h,the pH is 5.44.At this point,recovery rate achieves to 89.94%.The method has the features with a high protein recoveries,the safety and health of the recovery protein,easy operation,low cost,etc.