氢氧化镁-活性炭复合材料的制备及其对糖浆脱色工艺优化  

Preparation of the Magnesium Hydroxide-Activated Carbon Compositesand Optimize of Their Decolorization Process for Syrup

作　　者：陈金足 韦晓雯 农晶晶 韩丽芳 冯学 唐婷范[1,2] 李利军 程昊[1,2] CHEN Jinzu;WEI Xiaowen;NONG Jingjing;HAN Lifang;FENG Xue;TANG Tingfan;LI Lijun;CHENG Hao(Guangxi Key Laboratory of Green Processing of Sugar Resources,Guangxi Liuzhou Snail Flour Engineering Technology Research Center,College of Biology and Chemical Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China;Province and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry,Nanning 530004,China)

机构地区：[1]广西糖资源绿色加工重点实验室,广西柳州螺蛳粉工程技术研究中心,广西科技大学生物与化学工程学院,广西柳州545006 [2]蔗糖产业省部共建协同创新中心,广西南宁530004

出　　处：《食品工业科技》2025年第1期201-207,共7页Science and Technology of Food Industry

基　　金：广西自然科学基金重点项目(2019GXNSFDA245025);广西自然科学基金面上项目(2022GXNSFAA035490);国家级大学生创新创业基金(202210594050);国家自然科学基金地区科学基金项目(31560466);广西糖资源绿色加工重点实验室主任基金(GXTZYZR202202)。

摘　　要：为寻找绿色环保且具有高吸附性的糖浆脱色材料,本文通过原位生成氢氧化镁沉积在活性炭表面,制备了氢氧化镁-活性炭复合材料,采用扫描电镜(SEM)、能谱仪(EDS)、比表面积和空隙度分析仪(BET)和X射线衍射仪(XRD)对制备的复合材料进行了表征,并以脱色率为指标,复合材料投入量、pH、脱色温度、脱色时间为影响因素,采用单因素及正交试验优化赤砂糖回溶糖浆脱色的最佳工艺。结果证明所制备的氢氧化镁-活性炭复合材料为多孔性,其比表面积和空隙率大、晶型结构良好、吸附能力强。糖浆脱色的最佳工艺为:复合材料用量为0.70 g,pH为10.00,脱色温度为50℃,脱色时间为50 min。在该工艺条件下的脱色率可达到80.7%,脱色效果明显优于商用活性炭。综上表明,氢氧化镁-活性炭复合材料对糖浆具有较理想的脱色效果,作为一种绿色材料在工业制糖方面具有一定的应用前景。In this study,magnesium hydroxide-activated carbon composites were prepared by in-situ generation of magnesium hydroxide deposited on the surface of activated carbon to find green and environmentally friendly syrup decolorization material with high adsorption.These composites were characterized by scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS),specific surface area and porosity analyzer(BET)and X-ray diffraction(XRD).Besides,the optimal decolorization of remelt syrup of brown granulated sugar was optimized by single factor and orthogonal experiments with the decolorization rate as the index,and the input amount,pH,decolorization temperature and decolorization time of the composites as the influencing factors.The results showed that the prepared composites were porous,with large specific surface area and porosity,sound crystal structure and strong adsorptive capacity.The decolorization rate could reach 80.7%under the optimal process of syrup decolorization as:0.70 g composite material,pH 10.00,50℃decolorization temperature and 50 min decolorization,of which the decolorization effect was significantly better than that of commercial activated carbon.The above indicates that magnesium hydroxide-activated carbon composites have an ideal decolorization effect on syrup,and present certain application prospects as a green material in the sugar industry.

关 键 词：氢氧化镁 活性炭 赤砂糖回溶糖浆 复合材料 脱色 

分 类 号：TS244[轻工技术与工程—制糖工程]