甘蔗糖业2025，Vol.54Issue(1)：51-61,11.DOI:10.3969/j.issn.1005-9695.2025.01.008
镁基膨润土澄清剂的制备及其蔗汁脱色工艺研究
Preparation of Magnesium-based Bentonite Clarifier and Its Process of Decolourisation of Sugar Juice
摘要
Abstract
Using sodium based bentonite as raw material,MgCl2·6H2O was used to modify it to obtain magnesium-based bentonite.The decolorization effect of sugar juice was used as an indicator to investigate the effects of MgCl2 concentration,stirring time,stirring temperature,and calcination temperature on the preparation of magnesium-based bentonite.The orthogonal method was further optimized to obtain the optimal preparation conditions:MgCl2 solution concentration of 1.2 mol/L,stirring time of 3 hours,stirring temperature of 40℃,and calcination temperature of 460℃.The decolorization rate of sugar juice could reach up to 87.65%.Finally,the structure was characterized using methods such as infrared spectroscopy,scanning electron microscopy,X-ray diffraction,and BET specific surface area.The results showed that magnesium successfully modified sodium based bentonite,and the specific surface area was significantly improved after modification.The magnesium-based bentonite clarificant prepared under the optimized conditions was applied to the decolorization of Sugar cane juice.The effects of its dosage,adsorption decolorization time,temperature,pH and other process conditions on the decolorization rate of sugarcane juice were further investigated.The results showed that the highest decolorization rate could reach 93.77%when the clarificant was added 0.6 g,the decization time was 30 min,the temperature was 60℃,and the pH value was 4.关键词
镁基膨润土/蔗汁澄清剂/脱色率/工艺优化Key words
Magnesium-based bentonite/Sugar juice clarifier/Decolourisation rate/Process optimisation分类
轻工业引用本文复制引用
黄承都,丰锐,姚巧玲,彭敬超,黄永春,李利军,王宁,颜新月..镁基膨润土澄清剂的制备及其蔗汁脱色工艺研究[J].甘蔗糖业,2025,54(1):51-61,11.基金项目
广西自然科学基金重点项目(2019GXNSFDA245025) （2019GXNSFDA245025）
广西糖资源绿色加工重点实验室开放课题(GXTZYZR202205) （GXTZYZR202205）
2024 年广西大学生创新创业训练计划项目(S202410594120) （S202410594120）
