文章摘要
李慰霞.磷酸-硝酸镁对回溶糖浆的清净效果及机理[J].精细化工,2019,36(9):0
磷酸-硝酸镁对回溶糖浆的清净效果及机理
Purification and Mechanism of Phosphoric acid-Magnesium Nitrate Composite Detergent for Sugar Juice
投稿时间:2018-09-19  修订日期:2019-03-02
DOI:
中文关键词: 复合清净剂  混凝  脱色率  沉降时间  清净机制
英文关键词: compound detergent  coagulation  decolorization rate  settling time  clarification mechanism
基金项目:国家自然科学基金 No:31560466
作者单位E-mail
李慰霞 广西科技大学 306317027@qq.com 
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中文摘要:
      以赤砂糖回溶糖浆作为研究对象,考察了硝酸镁-磷酸复合清净剂在高pH条件下对回溶糖浆的清净效果及机理。在单因素试验的基础上确定正交试验的因素与水平,采用正交试验对清净条件进行了优化。最佳条件为:2%镁离子和1.70%磷酸复合清净剂用量2%,pH值11.0,PAM用量2mg?L-1,温度30℃,在此条件下脱色率为88.2%,最佳沉降时间为69s。采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、Nano-ZS90型ZETA电位分析仪、X射线衍射(XRD)对在蔗糖体系和回溶糖浆体系的混凝物进行了表征,并对相关机理进行了探讨。
英文摘要:
      This paper takes the basic object of brown granulated sugar remelted syrup to introduced the purification effect and mechanism of magnesium nitrate-phosphoric acid composite detergent on the remelted syrup under the condition of high pH. It makes the option to optimize the purification condition in way of orthogonal test on the basis of the single factor test to determine the element and level of the orthogonal test. The optimum conditions are like this: 2% magnesium ion and 1.70% phosphoric acid composite detergent dosage 2%, pH value 11.0, PAM dosage 2 mg?L-1, temperature 30 ?C, these conditions registers 88.2% of the decolorization rate and 69s of the best falling time. The equipment of SEM, TEM, Nano-ZS90 ZETA potential analyzer, and XRD are harnessed to characterize the complexes in the sucrose system and the brown granulated sugar remelted syrup system and to discuss the related mechanism.
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