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中国精品科技期刊2020
陈金足,韦晓雯,农晶晶,等. 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[J]. 食品工业科技,2025,46(1):1−7. doi: 10.13386/j.issn1002-0306.2024010145.
引用本文: 陈金足,韦晓雯,农晶晶,等. 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[J]. 食品工业科技,2025,46(1):1−7. doi: 10.13386/j.issn1002-0306.2024010145.
CHEN Jinzu, WEI Xiaowen, NONG Jingjing, et al. Preparation of the Magnesium Hydroxide-Activated Carbon Composites and Optimize of Their Decolorization Process for Syrup[J]. Science and Technology of Food Industry, 2025, 46(1): 1−7. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2024010145.
Citation: CHEN Jinzu, WEI Xiaowen, NONG Jingjing, et al. Preparation of the Magnesium Hydroxide-Activated Carbon Composites and Optimize of Their Decolorization Process for Syrup[J]. Science and Technology of Food Industry, 2025, 46(1): 1−7. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2024010145.

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 Composites and Optimize of Their Decolorization Process for Syrup

  • 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。

     

    Abstract: 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 value, decolorization temperature and decolorization time of the composites as the influencing factors. The results showed that the prepared composites are porous, with large specific surface area and porosity, sound crystal structure and strong adsorptive capacity. The decolorization rate can reached 80.7% under the optimal process of syrup decolorization as: 0.70 g composite material, pH 10.00, 50 °C 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.

     

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