Science and Technology of Food Industry

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Volume 41 Issue 9
Apr.  2020
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CHENG Hao, SUN Li-ming, TANG Ting-fan, KONG Hong-xing, LI Li-jun. Characterization of Porous Magnesium Silicate and Adsorption of Gallic Acid in Sugar Juice[J]. Science and Technology of Food Industry, 2020, 41(9): 8-13. DOI: 10.13386/j.issn1002-0306.2020.09.002
Citation: CHENG Hao, SUN Li-ming, TANG Ting-fan, KONG Hong-xing, LI Li-jun. Characterization of Porous Magnesium Silicate and Adsorption of Gallic Acid in Sugar Juice[J]. Science and Technology of Food Industry, 2020, 41(9): 8-13. DOI: 10.13386/j.issn1002-0306.2020.09.002
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Characterization of Porous Magnesium Silicate and Adsorption of Gallic Acid in Sugar Juice

  • 1. Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China;

  • 2. Province and Ministry Co-sponsored Collaborative Innovation Center of Sugar cane and Sugar Industry, Nanning 530004, China

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  • Received Date: July 31, 2019
  • Available Online: November 12, 2020
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    • Abstract
  • In this paper the porous magnesium silicate was prepared by hydrothermal synthesis method and template method with magnesium chloride and silica gel as precursors. The magnesium silicate was characterized by XRD,FTIR and SEM analysis. Porous magnesium silicate was used as adsorbent and adsorption as an index,the effects of adsorption time and initial concentration on the adsorption of gallic acid by porous magnesium silicate were investigated. The characterization results showed the mesoporous spherical porous magnesium silicates with a pore diameter of 5 nm and 22 nm was obtained. The adsorption results showed that the pseudo-second-order equation provided the best correlation to the experimental data(R2 was 0.9965、0.9941、0.9941)when the initial gallic acid concentration were 25,50,75 mg/L,and the adsorption isotherm could be described by Freundlich isothermal adsorption equation(R2=0.9926). The method can provide a theoretical research basis for the adsorption and decolorization of sugar industry.
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