کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4996553 1368271 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Polyethyleneimine-bacterial cellulose bioadsorbent for effective removal of copper and lead ions from aqueous solution
ترجمه فارسی عنوان
بیواسیدرنت پلی اتیلنیمیم باکتری سلولز برای حذف مؤثر مس و یون سرب از محلول آبی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


- Bacterial cellulose (BC) was modified with polyethyleneimine (PEI) through amination.
- PEI-BC adsorption for Cu and Pb ions reached equilibrium very fast in 30 and 60 min.
- PEI-BC had much larger adsorption capacity for Cu(II) and Pb(II) than unmodified BC.
- PEI-BC adsorption fitted pseudo-second-order rate model and the Freundlich isotherm.

Bacterial cellulose (BC) is a green biopolymer suitable for heavy metal ion removal from aqueous solution due to its nano-porous microstructure. Polyethyleneimine-bacterial cellulose (PEI-BC) was prepared by reductive amination of dialdehyde BC with polyethyleneimine. The capacity of PEI-BC in Cu(II) and Pb(II) adsorption from aqueous solution was investigated. The adsorption kinetics could be well expressed by pseudo-second-order model and the adsorption isotherm data were well fitted with Freundlich model. Adsorption processes of Cu(II) and Pb(II) by PEI-BC reached equilibrium very rapid in 30 and 60 min, respectively. The maximum adsorption capacity of PEI-BC on Cu(II) and Pb(II) was found to be 148 and 141 mg/g, respectively, which was higher than that of unmodified BC and other modified BC reported. PEI-BC also showed good reusability in the adsorption of Cu(II) and Pb(II). This study demonstrates that polyethyleneimine modification makes BC a potential bioadsorbent for heavy metal ion removal in waste water.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 244, Part 1, November 2017, Pages 844-849
نویسندگان
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