中国食品添加剂2025，Vol.36Issue(11)：41-47,7.DOI:10.19804/j.issn1006-2513.2025.11.006
互贯网络树脂吸附木糖母液中色素的动态穿透特征
Dynamic breakthrough characteristics of pigments during adsorption from xylose mother liquor by interpenetrating polymer network resin
摘要
Abstract
To explore the dynamic penetration characteristics of pigment during adsorption from xylose mother liquor by interpenetrating polymer network(IPN)resin(PDVB/PGMT),the effects of flow rate,temperature,initial concentration,and bed height-to-diameter ratio on the adsorption process were studied.The mass transfer mechanisms of both sugar components and pigments were analyzed.The results showed that the IPN resin exhibited selective adsorption towards pigments,and its adsorption behavior followed the Henry isotherm model.The equilibrium diffusion model was suitable to describe the dynamic breakthrough behavior of both pigments and sugar components.At higher flow rates,the axial diffusion became the dominant mass transfer mechanism,resulting in a significant increase in the axial diffusion coefficient.As the initial feed concentration increases,the breakthrough process accelerated,although the total volume remained relatively stable.Increasing the height-to-diameter ratio of resin bed extended solute retention time and enhanced the breakthrough volume,thereby intensified the axial diffusion effect.The optimal decolorization conditions for xylose mother liquor using PDVB/PGMT resin were established as follows:flow rate of 1 mL/min,initial pigments absorbance of 0.68,xylose concentration of 185 mg/mL,and bed height-to-diameter ratio of 6.4:1.Under these conditions,the adsorption capacity of the resin for pigments reached 19.71 mg/g.The total sugar loss rate was low,and the resin demonstrated good reusability.关键词
互贯网络树脂/木糖母液/脱色/动态吸附/穿透特征Key words
interpenetrating polymer network resin/xylose mother liquor/decolorization/dynamic adsorption/breakthrough characteristics分类
轻工业引用本文复制引用
魏麒,张军伟,贾彩敬..互贯网络树脂吸附木糖母液中色素的动态穿透特征[J].中国食品添加剂,2025,36(11):41-47,7.基金项目
江苏省博士后基金项目(编号:1601073B) （编号:1601073B）
江南大学自主科研计划重点项目(编号:JUSRT51720B) （编号:JUSRT51720B）
