کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7785688 1500610 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An environment-friendly and multi-functional absorbent from chitosan for organic pollutants and heavy metal ion
ترجمه فارسی عنوان
جذب محیط زیست و چند منظوره از کیتوزان برای آلاینده های آلی و یون سنگین فلز
کلمات کلیدی
ایرگل کیتوزان، جاذب چند منظوره آلاینده های آلی، یون مس، گلوتارالدئید،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
Developing environment-friendly green absorbents for disposal of wastewater remains to be studied. In this paper, the cross-linked chitosan aerogel (CsA) as an environment-friendly absorbent was obtained by a simple method involving cross-linked process and freeze drying technique. Compared with conventional absorbents, the porous chitosan aerogel was provided with unique properties such as low density (0.0283 g/cm3), high porosity (97.98%) and outstanding adsorption performance. The chitosan aerogel also displayed good reusability and excellent elasticity with a maximal thickness recovery up to 96.8% of the original thickness. The as-prepared absorbent exhibited preferable adsorption capacities for crude oil, diesel and copper ion (41.07 g/g, 31.07 g/g and 21.38 mg/g, respectively). The aerogel can collect a wide range of organic solvents and oils with absorption capacities up to 40 times their own weight, depending on the density and viscosity of the liquids. The adsorption capacity for heavy metal ion was also considerable and the maximum adsorption capacity (qm) of the aerogel for copper ion was 35.08 mg/g according to Langmuir isotherm model. Consequently, the chitosan aerogel with versatile adsorption properties has a good potential for wastewater treatment in environmental application.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 148, 5 September 2016, Pages 272-280
نویسندگان
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