کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5157414 | 1500585 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Efficent removal of nickel(II) salts from aqueous solution using carboxymethylchitosan-coated silica particles as adsorbent
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Efficent removal of nickel(II) salts from aqueous solution using carboxymethylchitosan-coated silica particles as adsorbent Efficent removal of nickel(II) salts from aqueous solution using carboxymethylchitosan-coated silica particles as adsorbent](/preview/png/5157414.png)
چکیده انگلیسی
Three types of organo-mineral composites have been probed as adsorbents for the removal of Ni(II) ions from aqueous solution. Native Aerosil 200 silica particles have been encapsulated with carboxymethylchitosan (CM-CS) providing SiO2 + CM â CS, surface-silanized silica particles SiO2NH2 + CM â CS were obtained by treatment with APTES and subsequent encapsulation by CM-CS. Alternatively, surface-carboxylated Aerosil 200 was coated by CM-CS affording SiO2CO2H + CM â CS. The materials have been characterized by various techniques. The effects of counter ions (Clâ, Brâ, CH3COOâ, NO3â and SO42â), pH and initial Ni(II) concentration on the adsorption capacities have been systematically investigated. The maximum adsorption capacity qm of CM-CS-coated silica was determined using the Langmuir adsorption isotherm. For SiO2CO2H + CM â CS, SiO2 + CM â CS and SiO2NH2 + CM â CS, they decrease at pH 7 in the order 256 mg/g > 140 mg/g > 105 mg/g. The adsorption kinetic fits well with a pseudo-second order model. These carbohydrate-derived biosorbents are excellent adsorbents with capacities superior to most other adsorbents reported in the literature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 173, 1 October 2017, Pages 372-382
Journal: Carbohydrate Polymers - Volume 173, 1 October 2017, Pages 372-382
نویسندگان
Moumin Aden, Rattiya Na Ubol, Michael Knorr, Jérôme Husson, Myriam Euvrard,