کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6664011 | 1427042 | 2018 | 42 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics and mechanistic description of adsorptive uptake of crystal violet dye by lignified elephant grass complexed isolate
ترجمه فارسی عنوان
سینتیک و توصیف مکانیکی جذب رنگ بنفش کریستالی توسط جدایه پیچیده ای از گیاه فیل
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
جذب، لیگنین، بنفش کریستال، سینتیک، مدل سازی مکانیکی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Lignified isolate was successfully synthesized from simulated effluent of modified procedure for bio - ethanol production from elephant grass. The effectiveness of lignin isolate (EA); complexed with Al3+ (Al -EA) and Mn2+ (Mn - EA) for adsorbing aqueous crystal violet dye (CVD) was evaluated. The adsorbents were characterized using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Removal efficiencies of Al k EA (98.42%) and Mn - EA (97.87%) were obtained at contact time of 30â¯min and 343â¯K. Kinetic study showed that Brouer - Weron - Sotolongo, Fractal - like mixed 1,2-order and Elovich models were the best three models in describing the adsorption kinetics of both adsorbent. Similarly, the predicted kinetic data were adjured statistically significant using F- test and student's t-test. Application of mechanistic models suggests film diffusion as the rate controlling mechanism. The estimated average thermodynamic parameters (ÎG0 (â18.438â¯KJ/mol), ÎH0 (+27.968â¯KJ/mol) and ÎS0 (29.536â¯KJ/mol)) reveal that CVD adsorption onto Al - EA and Mn - EA was feasible, spontaneous and endothermic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 6, Issue 2, April 2018, Pages 2105-2118
Journal: Journal of Environmental Chemical Engineering - Volume 6, Issue 2, April 2018, Pages 2105-2118
نویسندگان
C.O. Aniagor, M.C. Menkiti,