Adsorption Characteristics Of Phosphate Radicals By Fe(¢ó) Immobilized In Collagen Fibers
Keywords
Abstract
Fe(¢ó) was immobilized on collagen fibers to prepare adsorbent materials, and the adsorption performance of the adsorbent materials for phosphate was studied. The results show that when the temperature is 303K and the initial concentration of the solution is 62.0 mgP¡¤L-1, the adsorption capacity of Fe(¢ó) (FeICF) immobilized on collagen fibers for phosphate is 32.69 mgP¡¤g-1. The equilibrium adsorption capacity is larger in the pH range of 3.0 to 6.0, that is, when phosphate exists in the form of H2PO-4 in the solution, it is beneficial to adsorption. The adsorption isotherm conforms to the Langmuir equation, and the adsorption capacity increases with the increase of temperature and solid loading of Fe(¢ó). The adsorption kinetics of phosphate by FeICF conforms to the pseudo-second-order velocity equation. Cl-, NO-3, SO2-4 and CO2-3 present in the solution have no effect on the adsorption of phosphate, indicating that FeICF has strong selective adsorption capacity for phosphate.
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Original research was done by Ding Yun, Liao Xuepin, Shi Bi
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