کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8330598 1540239 2015 37 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and implementation of nano-chitosan and its acetophenone derivative for enhanced removal of metals
ترجمه فارسی عنوان
سنتز و اجرای نانو کیتوزان و مشتقات استئوفنون آن برای افزایش حذف فلزات
کلمات کلیدی
نانوکیتوزان، استئفنون، تعیین مشخصات، حذف مقایسه یون فلز متساوی،
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
چکیده انگلیسی
In the present study, nano-chitosan (Nano-Ch) was synthesized by ionic gelation of chitosan/tripolyphosphate system and successfully modified with acetophenone via Schiff's base condensation to produce nano-chitosan-modified-actophenone (Nano-Ch-Ac). The produced nano-materials were characterized by FT-IR, SEM, HR-TEM and TGA techniques. The average particle sizes were found in the range of 5.20-14.54 nm based on the HR-TEM analysis. The metal interaction properties of Nano-Ch and Nano-Ch-Ac with Cu(II), Cd(II), Hg(II) and Pb(II) were compared in presence of various experimental parameters. Nano-Ch-Ac sorbent was found more superior in the extraction processes of all examined metal ions under the evaluated experimental parameters. This trend was confirmed from the highest determined metal sorption capacity values of metal ions as 1298-1608 and 810-1236 μmol g−1 in pH 7.0 by Nano-Ch-Ac and Nano-Ch sorbents, respectively. The adsorption equilibrium was established at 30.0 min of contact time by the two nano-chitosan sorbents. The superiority of Nano-Ch-Ac was also confirmed from the dynamic applications of this nano-sorbent for removal of divalent metal ions from tap water, sea water and industrial wastewater (91.3-100.0 ± 1.0-3.0).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 81, November 2015, Pages 672-680
نویسندگان
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