食品与机械2025，Vol.41Issue(4)：172-178,7.DOI:10.13652/j.spjx.1003.5788.2024.80746
MgO-AC清净剂的制备及对糖汁的清净效果
Preparation of MgO-AC detergent and its cleaning effect on sugar juice
摘要
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.关键词
赤砂糖/回溶糖浆/脱色/MgO/活性炭Key words
brown granulated sugar/remelt syrup/decolorization/MgO/activated carbon引用本文复制引用
唐婷范,李琦,陈金足,邓琳,李利军,程昊..MgO-AC清净剂的制备及对糖汁的清净效果[J].食品与机械,2025,41(4):172-178,7.基金项目
广西自然科学基金重点项目(编号:2019GXNSFDA245025) （编号:2019GXNSFDA245025）
广西自然科学基金项目(编号:2025GXNSFHA069196) （编号:2025GXNSFHA069196）
广西自然科学基金面上项目(编号:2022GXNSFAA035490) （编号:2022GXNSFAA035490）
