کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
640032 1456960 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phenols removal from industrial effluents through novel polymeric resins: Kinetics and equilibrium studies
ترجمه فارسی عنوان
حذف فنل ها از پساب های صنعتی از طریق رزین های جدید پلیمری: مطالعات جنبشی و تعادل
کلمات کلیدی
ایزوترم جذب، رزین های آنیونی، فاضلاب صنعتی، مدلهای جنبشی، حذف فنل ها،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی
The efficient removal of phenols from wastewaters has increasingly become a significant environmental concern due to its high toxicity even at low concentrations. In this research work, phenols removal from aqueous solution was evaluated by using Amberlyst A26, a strong-base anion exchange resin, and Amberlite IRA-67, a weak-base anion exchange resin. The influence of phenols concentration in the feedstream was investigated as well as the effect of recirculation time. Equilibrium data fitted to the Langmuir, Freundlich and Temkin isotherms revealed Langmuir isotherm provided the best correlation for both resins (R2 = 0.99). Kinetic studies performed based on pseudo-first order, pseudo-second order and intraparticle diffusion models showed that although the correlation coefficients of the second-order model were the highest (R2 = 1) and also the SSE values were the lowest (<2%), the kinetics of phenols uptake could be also satisfactorily described by intraparticle diffusion. On the other hand, results revealed that phenols uptake is a spontaneous process for Amberlyst A26 (ΔG° = −1.55 kJ mol−1), whereas it is not spontaneous for Amberlite IRA-67 (ΔG° = 3.06 kJ mol−1). Finally, Amberlyst A26 was confirmed to be considerably more efficient than Amberlite IRA-67 for the potential removal of phenols from industrial effluents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 160, 29 February 2016, Pages 136-144
نویسندگان
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