Yazar "Aydin, AH" seçeneğine göre listele

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    Öğe
    Acid dyes removal using low cost adsorbents
    (Inderscience Enterprises Ltd, 2004) Aydin, AH; Bulut, Y; Yavuz, Ö
    Dyestuff production units and dyeing units have always had pressing need techniques that allow economical pre-treatment for colour in the effluent. The effectiveness of adsorption for dye removal from wastewaters has made it an ideal alternative to other expensive treatment options. Removal of acid green 25 and acid red 183 from aqueous solution by different adsorbent such as shells of almond and hazelnut, and poplar and walnut sawdust were investigated. Equilibrium isotherms have been determined and analysed using the Freundlich equations. Parameters of Freundlich isotherm have been determined using adsorption data. Capacities of adsorbent follow as walnut > poplar > almond > hazelnut for AG25 and almond > walnut > poplar > hazelnut for AR183, respectively.
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    Investigation of adsorption isotherms used for wool dyeing by aqueous extraction of cehri fruit (Fructus Rhamni Petiolari) and dyeing of wool and silk accompanied by various mordants
    (Scientific Technical Research Council Turkey, 1996) Aydin, AH; Guzel, F; Tez, Z
    In this study, adsorption isotherms were obtained by processing wool with dyestuff solutions of different concentrations extracted from cehri fruit with water. These isotherms follow the Nernst equation; the Nernst constant was determined and interpreted. In addition, wool and silk fibres were dyed with the same dyestuff solution and various mordants. Colours having a high fastness which could be used on an industrial scale were produced.
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    The removal of acid dye from aqueous solution by different adsorbents
    (Parlar Scientific Publications (P S P), 2002) Yavuz, Ö; Aydin, AH
    Colour removal is an important task in textile wastewater treatment. Removal of dyestuff from aqueous solutions by different adsorbents, such as activated carbon, kaolinite and montmorillonite was investigated. Equilibrium isotherms have been determined and analysed using the Langmuir equations. The monolayer saturation adsorption capacities for acid dye are 967.0, 50.5, 43.7 and 31.3 mg/g adsorbent for RAC (a commercial activated carbon), HAC (activated carbon obtained from hazelnut), KC (raw kaolinite) and MC (montmorillonite) at 25 degreesC, respectively.
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    Removal of acid red 183 from aqueous solution using clay and activated carbon
    (Natl Inst Science Communication-Niscair, 2004) Aydin, AH; Yavuz, Ö
    The removal of acid red 183 from aqueous solution onto activated carbon, raw kaolinite and montmorillonite has been studied using an agitated batch adsorber. The adsorption isotherm data were fitted to Langmuir isotherm. Parameters of Langmuir isotherm were determined using adsorption data. The adsorption capacity was 1495, 111, 29 and 19 mg dye per g adsorbent for RAC (commercial activated carbon), HAC (activated carbon obtained from hazelnut), KC (raw kaolinite) and MC (montmorillonite) at 25degreesC respectively.
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    Removal of direct dyes from aqueous solution using various adsorbents
    (Hard, 2006) Yavuz, Ö; Aydin, AH
    Dyestuff production units and dyeing units have always had a pressing need for techniques that allow economical pre-treatment for colour in the effluent. The effectiveness of adsorption for dye removal from wastewaters has made it an ideal alternative to other expensive treatment options. Removal of direct dyes [direct yellow 50 (DY50), direct red 80 (DR80) and direct blue 71(DB71)] from an aqueous solution by different adsorbents such as activated carbon, raw kaolinite and montmorillonite was investigated. The adsorption isotherm data were fitted to the Langmuir isotherm. Parameters of the Langmuir isotherm have been determined using the adsorption data. Adsorption capacity of RAC (commercial activated carbon), HAC (activated carbon obtained from shell of hazelnut), KC ( raw kaolinite) and MC (montmorillonite) increased in the following order: DY50 > DR80 > DB71, DB71 > DR80 > DY50, DR80 > DB71 > DY50 and DB71 > DR80 (DY50 showed no absorption) for the direct dyes, respectively.
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    The removal of dyes from water by modified bentonite
    (Parlar Scientific Publications (P S P), 2004) Aydin, AH; Sahin, E; Akçay, G
    Colour removal is an important task in textile waste-water treatment. Dodecylammonium bentonite (DOB) was used as sorbent for reactive blue 160 (RB), reactive yellow 84 (RY), direct blue 71 (DB), and direct yellow 50 (DY). Langmuir and Freundlich sorption parameters were calculated and the adsorption data fitted well to the Langmuir isotherm. The monolayer adsorption capacity of DOB increases and follows the orders RB>RY>DB>DY and DB>RB> RY> DY for the dyes at 298 K and 308 K, respectively. The thermodynamical equilibrium constant (KO), standard free energy (DeltaG(0)), enthalpy (DeltaH(0)) and entropy (DeltaS(0)) changes have been also calculated to predict the nature of adsorption.