微孔木薯淀粉吸附特性研究  

Study on adsorption property of microporous tapioca

作　　者：陆冬梅[1] 杨连生[2] 

机构地区：[1]云南大学化学与材料工程学院应用化学系,云南昆明650091 [2]华南理工大学食品与生物工程学院碳水化合物研究室,广东广州510641

出　　处：《应用化工》2005年第4期205-208,共4页Applied Chemical Industry

基　　金：国家自然科学基金项目(29906002)

摘　　要：对微孔木薯淀粉吸附次甲基兰的特性进行了研究,发现微孔淀粉对次甲基兰的吸附遵循Langmuir吸附等温方程式,其吸附速率方程为:A=0.4228t0.243。淀粉颗粒表面ζ电位决定其对次甲基兰的饱和吸附量,ζ负电位增大,吸附量增加;当ζ正电位增大,则吸附量下降。The property of microporous tapioca on the adsorption of methylene blue was studied in this paper.It was observed that the adsorption of methylene blue obey The Langmuir adsorption isotherm equation ,the adsorptive speed equation of microporous tapioca were deduced as A=0.4228t^(0.243) .It had been found that the zeta potential of the microporous tapioca had a great effect on adsorption capacity of methylene blue,the adsorption increased with negative zeta potential increasing,while the adsorption decreased with positive zeta potential increasing.

关 键 词：微孔木薯淀粉 吸附 次甲基兰 

分 类 号：TS235.2[轻工技术与工程—粮食、油脂及植物蛋白工程]