The Measurement of Surface Areas of Some Silicates by Solution Adsorption

Authors : Oğuz İNEL, Fatma TÜMSEK

Pages : 9-20

View : 7 | Download : 5

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this study, the adsorption from solution technique was used for the determination of surface areas of some silicate samples insert ignore into journalissuearticles values(bentonite, sepiolite, zeolitic tuff and kaolin);. Methylene blue insert ignore into journalissuearticles values(MB);, orthophenanthroline insert ignore into journalissuearticles values(OP); and p-nitrophenol insert ignore into journalissuearticles values(PNP); were selected as solutes. The adsorption data was found to conform with the Langmuir equation within the concentration range studied, and Langmuir constants were determined for each of the samples. The surface area values obtained were compared with those determined by nitrogen adsorption. Also the results were discussed with respect to the cation exchange capacities of the samples. The specific surface area values of the samples were found to decrease in the following order: Bentonite > Sepiolite > Zeolite > Kaolin insert ignore into journalissuearticles values(for MB and OP adsorption); Sepiolite > Bentonite > Zeolite > Kaolin insert ignore into journalissuearticles values(for PNP and N2 adsorption);
Keywords : Surface area determination, solute adsorption, adsorption from solution