کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9675818 | 1454107 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Interaction between protonated waste biomass of Corynebacterium glutamicum and anionic dye Reactive Red 4
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
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چکیده انگلیسی
The protonated waste biomass of Corynebacterium glutamicum discharged from an industrial lysine fermentation plant was used as a new type of biosorbent for the removal of anionic dye Reactive Red 4. The dye uptake increased as the solution pH was decreased and at pH >7, the uptake was negligible. The maximum uptake of dye was estimated to be 104.6 ± 8.7 mg/g at pH 1. To identify the binding sites in the biomass, the biomass was potentiometrically titrated. As a result, three types of functional groups were present in the biomass, which was confirmed by FTIR analysis. Among functional groups, primary amine groups (-NH2) were likely the binding sites for anionic Reactive Red 4. The proton dissociated constant pKH and molar content of the protonated amine groups were 9.14 ± 0.07 and 0.68 ± 0.02 mmol/g, respectively. It was also found that carboxyl and phosphonate groups played a role in electrostatic interference with the binding of dye molecules.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 262, Issues 1â3, 15 July 2005, Pages 175-180
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 262, Issues 1â3, 15 July 2005, Pages 175-180
نویسندگان
Sung Wook Won, Sun Beom Choi, Yeoung-Sang Yun,