Preparation Of Porous Fibrous Iron Oxide And Study On Its Adsorption Characteristics Of Dyes
Keywords
Skin Collagen Fiber, Template, Porous Fibrous Iron Oxide, Adsorption, Dye
Abstract
Skin collagen fiber has a special fibrous structure and chemical reaction characteristics. Using skin collagen fiber as a template, ferric iron is loaded on the collagen fiber, and then calcined at a high temperature of 550¡ãC to prepare a porous iron oxide adsorption material, and rhodamine B is used. , acidic yellow G was used as the adsorption object to examine its adsorption performance for dyes in water. The study showed that porous fibrous iron oxide has obvious adsorption effect on the anionic dye acidic yellow G, but it is difficult to produce effective adsorption on the cationic dye rhodamine B. .Under the conditions of optimal adsorption of acidic yellow G at pH=3.0 and T=303K, the maximum adsorption capacity of 0.05g of porous fibrous iron oxide for acidic yellowish G with an initial mass concentration of 400mg/L can reach 174.17mg/g. .In the range of 303~323K, temperature changes have a significant impact on the adsorption of acidic yellow G. As the temperature increases, the adsorption amount of acidic yellow G increases, and the adsorption equilibrium conforms to the Langmuir equation; the adsorption kinetic data shows that the adsorption of acidic yellow G increases. The adsorption kinetics of acidic yellow G by the adsorbent material conforms to the pseudo-second-order velocity equation; after desorption-readsorption experiments on porous fibrous iron oxide, it was found that the regeneration performance of the adsorbent material is very excellent and can be reused.
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Original research was done by Zeng Chenghua, Yang Fan, Lin Hai, Liao Xuepin
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