کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7081139 1460000 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of wheat straw based superabsorbent resins and their applications as adsorbents for ammonium and phosphate removal
ترجمه فارسی عنوان
آماده سازی رزینهای سوپر جاذب بر پایه کاه گندم و کاربرد آنها به عنوان جاذب برای حذف آمونیاک و فسفات
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
A novel wheat straw cellulose-g-poly (potassium acrylate)/polyvinyl alcohol (WSC-g-PKA/PVA) semi-interpenetrating polymer networks (semi-IPNs) superabsorbent resin (SAR) was prepared by graft copolymerization. The structure and performance of the WSC-g-PKA/PVA semi-IPNs SAR was studied and compared with those of wheat straw cellulose-g-poly (potassium acrylate) (WSC-g-PKA) SAR. The effects of various experimental parameters such as solution pH, concentration, contact time and ion strength on NH4+ and PO43- removal from solutions were investigated. Equilibrium isotherm data of adsorption of both NH4+ and PO43- were well fitted to the Freundlich model. Kinetic analysis showed that the pseudo-second-order kinetic model was more suitable for describing the whole adsorption process of NH4+ and PO43- on SARs. Overall, WSC-g-PKA/PVA semi-IPNs SAR showed better properties in comparison with WSC-g-PKA SAR and it could be considered as one efficient material for the removal and recovery of nitrogen and phosphorus with the agronomic reuse as a fertilizer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 143, September 2013, Pages 32-39
نویسندگان
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