新生亚硫酸钙形貌和结构的调控对糖汁清净作用的研究

Effect on sugar clarification for morphology and structure modification of newly-generatecalcium sulfite

主要以新生CaSO_3为研究对象,琥珀酸为晶型控制剂,探讨不同比值R(COO-/Ca2+)=0、0.011、0.032、0.086、0.24下新生CaSO_3的形貌结构与糖汁澄清脱色效果之间的关系,以激光粒度仪、SEM、XRD、拉曼对新生CaSO_3的形貌和结构进行表征,以脱色率为考查指标,单独考查新生CaSO_3的脱色效果,发现随着比值R的增加,新生CaSO_3微粒越小且越均匀,脱色效果在逐渐增强。其中,新生CaSO_3加入量0.57 g/100 m L糖汁、温度为40℃、p H值为6.1条件下,脱色率可达20.5%。同时对新生CaSO_3不同形貌的生长机制以及不同形貌和结构下的脱色效果的差异进行了研究。

Based on the new-generate CaSO3 as the research object, using succinic acid as the crystal growth modifier. Explore morphology and structure of the new-generate CaSO3 which in the different ratio R（COO-/Ca2＋）=0, 0.011, 0.032, 0.086, 0.24 to investigate the decolorization rate of cane sugar. The morphology and structure of new-generate CaSO3 were prepared and systemically characterized by means of laser particle size instrument, SEM, XRD and Raman. Using decolorization rate as investigation targets, separate to test the decolorization rate of new generated CaSO3 in the different ratio R, and found that with the increase of the ratio R, the decolorizing rate of cane sugar juice was enhancing graduallyand the new-generate CaSO3 particles become smaller and homogeneous as well. Therefore, newgenerate CaSO3 0.57 g/100 m L cane sugar juice, temperature was 40 ℃, and the value of p H was 6.1. In this condition, the decolorizing rate can reach up to 20.5%. The regulation mechanism of new-generate CaSO3 with different decolorizing effects under different morphology and structure were researched simultaneously.