Title of article :
Kinetic studies of Safranin-O removal from Aqueous Solutions using Pineapple Peels
Author/Authors :
Yusuf, M Malaysia Japan International Institute of Technology - Department of Environmental Engineering and Green Technology - Jalan Semarak - 54100 Kaula Lumpur - Malaysia , Elfghi, F.M Malaysia Japan International Institute of Technology - Department of Environmental Engineering and Green Technology - Jalan Semarak - 54100 Kaula Lumpur - Malaysia , Mallak, S.K Department of Environmental Management - Faculty of Environmental studies - 43400 Universiti Putra Malaysia - Selangor - Malaysia
Abstract :
This study aimed to investigate how safranin-O can be removed from aqueous solutions by adsorption on pineapple peels. The effect of solution pH, initial dye concentration, contact time and adsorbent dose were studied. The optimum adsorption capacity of 26.08 mg/g was achieved under the experimental condition of pH, temperature and contact time of 6, 293K and 80 min, respectively. Also further analysis revealed that 93.24% of safranin-O was significantly removed at 120 mg/L dye concentration in 80 minutes contact time. From the result of the isotherm studies, it was revealed that the equilibrium data is well fitted to Freundlich model while the adsorption kinetic data showed that the adsorption process was well described by the pseudo-second order kinetic model. Finally, it can be deduced that pineapple peels had a great potential in adsorbing and removal of safranin-o from aqueous solution.
Farsi abstract :
هدف اين پژوهش مطالعه چگونگي خارج كردن safranin-O از محلول آبي با جذب سطحي آن بر روي پوست آناناس مي باشد. تاثير pH محلول، غلظت اوليه رنگ، زمان تماس و مقدار جاذب مور مطالعه قرار گرفت. ظرفيت بهينه جذب به ميزان 26.08 mg/g در دما و زمان بهينه 6293 كلوين و 80 دقيقه بدست آمد. علاوه بر اين مطالعات بعدي نشان داد كه 93.24% safranin-O به ميزان چشمگيري در غلظت رنگي 120 mg/L در زمان تماس 80 دقيقه اتفاق افتاد. نتايج مطالعات ايزوترم نشان داد كه داده هاي تعادلي به خوبي بر مدل فرندليچ قابل فيت كردن است درحاليكه داده هاي سينتيكي جذب نشان داد كه فرآيند جذب به خوبي با مدل سنتيكي pseudo-second order )شبه درجه دو( به خوبي توصيف مي شود. نهايتا اين نتيجه حاصل شد كه پوست آناناس پتانسيل بالايي براي جذب و خارج كردن safranin-O از محلول آبي دارد.
Keywords :
Freundlich model , Adsorption kinetic , Adsorption isotherm , Pineapple peel , Safranin-O
Journal title :
Astroparticle Physics
