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《Environmental Science and Management》 2006-06
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Study on the Properties and Mechanism of Carrying Fe 001×7 Modified Resin for Fluoride Removal

LI Yi~1,ZHANG Lin-sheng~2(1.2 Department of Environmental Engineering,Southeast University,Nanjing?210096,China)  
By modified the model-H 001×7 strong acids resin to model-Fe,a study testified that the modified resin can adsorption exchange fluoride in drinking water effectively.It's saturation adsorption capacities reached 18.98mg/g,the optimum pH for adsorption was in a range between 4.5 and 6.0.Because of the restriction by membrane diffuse rate,the liquor's waterpower condition have great infiuence to the properties of fluoride removal.The modified resin can reach adsorption balance in 1.5 hour by a certain of mix round rate.It's adsorption model followed a Langmuir isotherm at room temperature,take on the character of chemisorption.The infrared spectral analysis indicate that,it's mechanism of fluoride removal relied on the F~-replaced ligand of H_2O that was adsorbed by Fe~(3+) previously and formed coordination compound with Fe~(3+) finally,as a result,it holded a certain of capability of fluoride removal.
【CateGory Index】: X703.1
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