REMOVAL OF ASTROZON RED FROM AQUEOUS SOLUTIONS BY THE ADSORBENTS PRODUCED FROM LIGNITE COAL
Mehmet MAHRAMANLIOĞLU1, İrfan KIZILCIKLI2, Adem ÇINARLI3, Özge ÖZGEN31Istanbul University, Engineering Faculty, Chemistry Department, 34850/Avcılar/Istanbul Physical Chemistry Division2Istanbul University, Engineering Faculty, Chemistry Department, 34850/Avcılar/Istanbul Inorganic Chemistry Division
3Istanbul University, Engineering Faculty, Chemistry Department, 34850/Avcılar/Istanbul Organic Chemistry Division
The adsorption of Astrozone Red on the activated coal from aqueous solutions was studied.The adsorption process followed the Lagergren first order kinetics equation. The adsorbent concentration affected the adsorption of Astrozone Red significiantly.The equilibrium data fit well in the Langmuir model and isotherm constants were calculated. The adsorption of Astrozon Red increased with increase of the pH value in the solution.The thermodynamics of adsorption indicated spontaneous and exothermic nature of the process.
Keywords: Astrozone red, Adsorption, Activated coal, Thermodynamic parameters, Lagergren equationLİNYİT KÖMÜRÜNDEN ÜRETİLEN ADSORBENTLERLE SULU ÇÖZELTİLERDEN ASTROZON RED UZAKLAŞTIRILMASI
Mehmet MAHRAMANLIOĞLU1, İrfan KIZILCIKLI2, Adem ÇINARLI3, Özge ÖZGEN31Istanbul University, Engineering Faculty, Chemistry Department, 34850/Avcılar/Istanbul Physical Chemistry Division2Istanbul University, Engineering Faculty, Chemistry Department, 34850/Avcılar/Istanbul Inorganic Chemistry Division
3Istanbul University, Engineering Faculty, Chemistry Department, 34850/Avcılar/Istanbul Organic Chemistry Division
Astrozone Red’in sulu çözeltilerinden aktif kömür üzerine adsorpsiyonu incelendi. Adsorpsiyon prosesi Lagergren birinci mertebe kinetik eşitliğine uydu. Adsorbent konsantrasyonu Astrozone Red adsorpsiyonunu önemli ölçüde etkiledi. Denge değerleri Langmuir modeline uydu ve isoterm sabitleri hesaplandı. Astrozon Red adsorpsiyonu çözeltilerin pH’larının artması ile arttı. Adsorpsiyon termodinamiği prosesin ekzotermik ve kendiliğinden olduğunu gösterdi.
Anahtar Kelimeler: Astrozone red, Adsorpsiyon, Aktif kömür, Termodinamik parametreler, Lagergren eşitliğiManuscript Language: Turkish