کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5481597 | 1522108 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effective adsorption of aqueous Pb2+ by dried biomass of Landoltia punctata and Spirodela polyrhiza
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Lead contamination has become a serious issue and approaches are continuously searched for lead removal. Here, dried biomasses of Landoltia punctata and Spirodela polyrhiza were utilized as adsorbent for Pb2+ removal. Batch experiments were conducted to investigate effects of contact time, initial pH, temperature, stirring speed, adsorbent dosage, and initial Pb2+ concentrations on Pb2+ adsorption. Results showed that all these parameters had significant effect on Pb2+ removal efficiency of the adsorbents. Both the adsorption processes followed the pseudo-second-order kinetic model, and were well described by Langmuir isotherm. Spectroscopy analysis indicated the involvement of functional groups (-OH, C-N, C=O, N-H and C-O) in Pb2+ adsorption. Remarkably, the maximum Pb2+ adsorption capacity of L. punctata and S. polyrhiza were 250 and 200 mg gâ1 (dry weight), respectively. Thus, it could be concluded that the dried biomass of L. punctata and S. polyrhiza are promising adsorbents for effective lead removal.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 145, 1 March 2017, Pages 25-34
Journal: Journal of Cleaner Production - Volume 145, 1 March 2017, Pages 25-34
نویسندگان
Jie Tang, Yang Li, Xin Wang, Maurycy Daroch,