کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
816218 | 906435 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Equilibrium, kinetic and thermodynamic studies on the removal of Aluminum by modified Eucalyptus camaldulensis barks
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, a low-cost eco-friendly adsorbent was prepared from Eucalyptus camaldulensis barks through chemical activation. The effect of operating variables namely initial pH, sorbent dose, initial metal concentration, shaking speed and temperature on the aluminum removal percentage and uptake capacity has been studied. The optimal pH was found as 5.0 and the sorbent dosage 5.0Â g/L. Temperature effect proved the process to be endothermic. The experimental observations were fitted to Langmuir and Freundlich isotherms where Langmuir proved to be a better fit. Pseudo-second order and intraparticle diffusion kinetic models were employed to the experimental data to verify the mechanism of sorption. The constants of isotherms and kinetic models were evaluated at different operating conditions. From the thermodynamic studies, the activation energy was evaluated as 43.23Â kJÂ molâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Alexandria Engineering Journal - Volume 53, Issue 2, June 2014, Pages 409-415
Journal: Alexandria Engineering Journal - Volume 53, Issue 2, June 2014, Pages 409-415
نویسندگان
Natarajan Rajamohan, Manivasagan Rajasimman, Rajan Rajeshkannan, Viswanathan Saravanan,