Zeta电位法优化赤砂糖回溶糖浆絮凝澄清工艺的研究

通过对赤砂糖回溶糖浆絮凝过程中Zeta电位的研究,探讨基于Zeta电位优化回溶糖浆絮凝澄清工艺的可行性。考察了pH、氯化钙、氢氧化钙、絮凝剂用量等对赤砂糖回溶糖浆Zeta的影响规律,分别以Zeta电位、脱色率、浊度为指标,优化最佳工艺条件。结果表明,氢氧化钙量5g/L、阳离子聚丙烯酰胺0.014g/L,最佳工艺Zeta电位达到-3.02mV;氢氧化钙量4g/L、阳离子聚丙烯酰胺0.014g/L,最佳工艺脱色率达到41.95%;氢氧化钙量5g/L、阳离子聚丙烯酰胺0.016g/L,最佳工艺浊度达到865.26。以Zeta电位、脱色率、浊度为指标,优化的最佳工艺条件基本一致,证明以Zeta电位法优化赤砂糖回溶糖浆絮凝澄清工艺具有可行性。由于Zeta电位更能反映澄清絮凝过程的本质,可为澄清剂、絮凝剂的遴选及其最佳用量的确定提供重要的依据。 

Study on the optimization of flocculation technology for remel syrup of brown granulated sugar by using zeta potential analysis

The article studied the zeta potential in the syrup flocculation process for dissolved syrup of brown granulated sugar, and explored the feasibility of the optimization of flocculation technology for dissolved Syrup of Brown Granulated Sugar by using zeta potential analysis.Effects of pH, calcium chloride dosage, calcium hydroxide dosage and flocculating agent dosage were discussed.Results showed that the best Zeta potential was-3.02mV, under the optimal conditions:calcium hydroxide dosage of 5g/L, cationic polyacrylamide dosage of 0.014g/L, the best clarification rate was 41.95%, under these optimal conditions:calcium hydroxide dosage of 4g/L, cationic polyacrylamide dosage of 0.014g/L, the best turbidity was 865.26, under the optimal conditions:calcium hydroxide dosage of 5g/L, cationic polyacrylamide dosage of 0.016g/L.Zeta potential, decolorization rate and turbidity as optimum conditions were investigated.It indicated that optimum optimized conditions were consistent.Zeta potential measurements to optimize dissolved syrup of brown granulated sugar dissolved syrup back flocculation process were feasible.Zeta potential could reflect the nature of the clarify and flocculation process and the study provided theory basis for the optimum dosage of the clarifying agent and flocculating agent.