کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5211148 | 1382938 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effective Cd2+ chelating fiber based on polyacrylonitrile
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A reusable chelating fiber containing polyamino-polycarboxylic acid ligands was prepared via the stepwise modification of polyacrylonitrile fiber with diethylenetriamine and chloroacetic acid. The amination and carboxylmethylation conditions were optimized, and the modified fiber was characterized by elemental analysis, XRD, SEM and FTIR. For Cd2+ in water, this chelating fiber has prominent adsorption abilities such as low adsorption limitation (0.001Â mg/L), high adsorption capacity (1.34Â mmol/g) and fast response speed (half-saturation adsorption time less than 0.5Â min based on 1Â mg/mL Cd2+). The effectiveness of this chelating fiber has been proved by using it to treat actual sewage water, where the concentration of Cd2+ was reduced from 0.540 to below 0.001Â mg/L. This level easily meets drinking water standards (0.003Â mg/L) issued by the World Health Organization. Moreover, this chelating fiber is also very effective at treating other metal ions such as Cu2+, Ca2+, Zn2+, Mg2+, Pb2+, Ni2+, Ag+ and Hg2+.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 69, Issue 1, January 2009, Pages 48-54
Journal: Reactive and Functional Polymers - Volume 69, Issue 1, January 2009, Pages 48-54
نویسندگان
Lianhai Zhang, Xinsong Zhang, Peipei Li, Wenqin Zhang,