Determination of adsorptive properties of a Turkish Sepiolite for removal of Reactive Blue 15 anionic dye from aqueous solutions.
Reactive Blue 15 (RB 15) adsorption on the Turkish Sepiolite was carried out by batch equilibrium technique. IR spectrum and surface area measurement of the composite of dye-sepiolite (Turkish) pointed out that dye species replaced partly the zeolitic water to form hydrogen bond with bound water and adsorbed to the channels sites. The effects of temperature, pH and ionic strength on adsorption of dye molecules were investigated and the nature of adsorption process was determined by calculating DeltaH, DeltaS and DeltaG values. The adsorbed amount increased with increase in temperature, but that for high pH values decreased for the adsorption of reactive dye.
Department of Chemistry, Faculty of Arts and Sciences, Rize University, 53100 Rize, Turkey. ahmtabak@hotmail.com
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Tabak
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Eren
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Afsin
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Caglar
D000327:Adsorption; D000838:Anions; D004396:Coloring Agents / Q000737:chemistry; D006860:Hydrogen Bonding; D006863:Hydrogen-Ion Concentration; D017633:Magnesium Silicates / Q000737:chemistry*; D009930:Organic Chemicals / Q000737:chemistry*; D013055:Spectrophotometry, Infrared / Q000379:methods; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013696:Temperature; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification; D014961:X-Ray Diffraction
D000838:Anions; D004396:Coloring Agents; D017633:Magnesium Silicates; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; C449191:reactive blue 15; C001671:magnesium trisilicate