کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10603481 | 982479 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and adsorption performance of dithiocarbamate-modified glycidyl methacrylate starch
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and adsorption performance of dithiocarbamate-modified glycidyl methacrylate starch Synthesis and adsorption performance of dithiocarbamate-modified glycidyl methacrylate starch](/preview/png/10603481.png)
چکیده انگلیسی
The design of chelating polymers with fast complexation of the metal ions is particularly interest. In this work, the dithiocarbamate-modified glycidyl methacrylate starch was synthesized and characterized by FT-IR, 13C NMR and XRD spectra. Its sorption performance for heavy metals fixation was studied. It was found that the removal process of metal ions involved a fast increase stage followed by a slower stage. There was a higher match between the pseudo-second-order equation and the experimental data. The sorption rate constants were related to the substitution rates of hydrated metal ions in aqueous solutions, showing typical chemisorption. The Langmuir isotherm gave satisfying fits to equilibrium data of metals adsorption. And the capacities followed the sequence Cu2+Â >Â Cd2+Â >Â Co2+Â >Â Zn2+Â >Â Ni2+Â >Â Mn2+, which could be well demonstrated with chelating interaction caused by sulfur atoms. Such understanding provides new insights as how to synthesize and use the dithiocarbamate-based polysaccharides.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 96, Issue 1, 1 July 2013, Pages 320-325
Journal: Carbohydrate Polymers - Volume 96, Issue 1, 1 July 2013, Pages 320-325
نویسندگان
Xiumei Cheng, Rumei Cheng, Shengju Ou, Yijiu Li,