Abstract
［Objective］ To solve the difficulty in decolorizing brown granulated sugar,the end product of sugar industry.［Methods］ Magnesium oxide -activated carbon (MgO -AC) composites are prepared by high -temperature calcination using the co -precipitation method.The morphology and structure of the prepared materials are characterized with methods including X -ray diffractometer (XRD ),infrared spectrometer (FT-IR),specific surface area and porosity analyzer (BET ),and scanning electron microscope (SEM ).It is then applied to the decolorization process of remelt syrup of the brown granulated sugar.The effects of MgO -AC mass concentration,reaction temperature,pH,and adsorption time on the decolorization effect are investigated.The orthogonal test is designed to select the optimal solution.［Results］］ MgO is successfully loaded onto the activated carbon with an average pore size of 3.27 nm,a surface area of 250.78 m2/g,and a lamellar structure.The scheme of orthogonal test is optimal with MgO -AC mass concentration of 8 g/L,reaction temperature of 60 ℃,pH of 5.00,and adsorption time of 70 min.Under these conditions,the optimal decolorization rate is 98%.［Conclusion］ The activated carbon loaded with a large number of MgO particles has both the hydrophilicity and alkalinity of magnesium oxide as well as the adsorptivity of activated carbon,thus forming a material with unique adsorption activity.This significantly improves the adsorption of non -sucrose impurities,such as pigments of remelt syrup.
Publication Date
6-2-2025
First Page
172
Last Page
178
DOI
10.13652/j.spjx.1003.5788.2024.80746
Recommended Citation
Tingfan, TANG; Qi, LI; Jinzu, CHEN; Lin, DENG; Lijun, LI; and Hao, CHENG
(2025)
"Preparation of MgO-AC detergent and its cleaning effect on sugar juice,"
Food and Machinery: Vol. 41:
Iss.
4, Article 21.
DOI: 10.13652/j.spjx.1003.5788.2024.80746
Available at:
https://www.ifoodmm.cn/journal/vol41/iss4/21
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