An Aminated Bacterial Biosorbent Capable of Effectively Binding Negatively Charged Pollutants in Aqueous Solution
The main aim of this work was to enhance the biosorption capacity of Corynebacterium glutamicum for the remediation of wastewaters containing Reactive dyes. Amine groups were found to be responsible for accommodating negatively charged Reactive Red 4 (RR4) molecules via electrostatic interaction. Th...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publications
2008-10-01
|
| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361708788059884 |
| _version_ | 1797288408489394176 |
|---|---|
| author | Sung Wook Won K. Vijayaraghavan Juan Mao Yeoung-Sang Yun |
| author_facet | Sung Wook Won K. Vijayaraghavan Juan Mao Yeoung-Sang Yun |
| author_sort | Sung Wook Won |
| collection | DOAJ |
| description | The main aim of this work was to enhance the biosorption capacity of Corynebacterium glutamicum for the remediation of wastewaters containing Reactive dyes. Amine groups were found to be responsible for accommodating negatively charged Reactive Red 4 (RR4) molecules via electrostatic interaction. Thus, increasing the number of amine groups on C. glutamicum , via amination, resulted in an enhanced RR4 biosorption capacity. The pH-edge experiments revealed that acidic conditions (pH = 2) favoured the biosorption of RR4 molecules. Isotherm experiments indicated that the aminated C. glutamicum exhibited the highest RR4 uptake, i.e. 133.8 mg/g at pH 2, compared to 96.8 mg/g for raw C. glutamicum. Of the two isotherm models considered, the Toth model provided a better description of the experimental isotherms, with high correlation coefficients and low percentage error values. Kinetic experiments revealed the importance of the initial dye concentration, with equilibrium being rapidly attained after ca. 1 h for all the concentrations examined. The non-linear form of the pseudo-second-order model described the biosorption kinetic data, with high correlation coefficients and low percentage error values compared to the pseudo-first-order model. Desorption was successful achieved at pH 10, with > 90.2% elution efficiencies for both the raw and aminated biomasses. |
| first_indexed | 2024-03-07T18:48:54Z |
| format | Article |
| id | doaj.art-111f1649807c4b869d9598afe1ef9c6b |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T18:48:54Z |
| publishDate | 2008-10-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-111f1649807c4b869d9598afe1ef9c6b2024-03-02T01:53:15ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40382008-10-012610.1260/026361708788059884An Aminated Bacterial Biosorbent Capable of Effectively Binding Negatively Charged Pollutants in Aqueous SolutionSung Wook Won0K. Vijayaraghavan1Juan Mao2Yeoung-Sang Yun3 Division of Environmental and Chemical Engineering and Research Institute of Industrial Technology, Chonbuk National University, Jeonbuk 561-756, Korea Division of Environmental and Chemical Engineering and Research Institute of Industrial Technology, Chonbuk National University, Jeonbuk 561-756, Korea Department of Bioprocess Engineering, Chonbuk National University, Jeonbuk 561-756, Korea Department of Bioprocess Engineering, Chonbuk National University, Jeonbuk 561-756, KoreaThe main aim of this work was to enhance the biosorption capacity of Corynebacterium glutamicum for the remediation of wastewaters containing Reactive dyes. Amine groups were found to be responsible for accommodating negatively charged Reactive Red 4 (RR4) molecules via electrostatic interaction. Thus, increasing the number of amine groups on C. glutamicum , via amination, resulted in an enhanced RR4 biosorption capacity. The pH-edge experiments revealed that acidic conditions (pH = 2) favoured the biosorption of RR4 molecules. Isotherm experiments indicated that the aminated C. glutamicum exhibited the highest RR4 uptake, i.e. 133.8 mg/g at pH 2, compared to 96.8 mg/g for raw C. glutamicum. Of the two isotherm models considered, the Toth model provided a better description of the experimental isotherms, with high correlation coefficients and low percentage error values. Kinetic experiments revealed the importance of the initial dye concentration, with equilibrium being rapidly attained after ca. 1 h for all the concentrations examined. The non-linear form of the pseudo-second-order model described the biosorption kinetic data, with high correlation coefficients and low percentage error values compared to the pseudo-first-order model. Desorption was successful achieved at pH 10, with > 90.2% elution efficiencies for both the raw and aminated biomasses.https://doi.org/10.1260/026361708788059884 |
| spellingShingle | Sung Wook Won K. Vijayaraghavan Juan Mao Yeoung-Sang Yun An Aminated Bacterial Biosorbent Capable of Effectively Binding Negatively Charged Pollutants in Aqueous Solution Adsorption Science & Technology |
| title | An Aminated Bacterial Biosorbent Capable of Effectively Binding Negatively Charged Pollutants in Aqueous Solution |
| title_full | An Aminated Bacterial Biosorbent Capable of Effectively Binding Negatively Charged Pollutants in Aqueous Solution |
| title_fullStr | An Aminated Bacterial Biosorbent Capable of Effectively Binding Negatively Charged Pollutants in Aqueous Solution |
| title_full_unstemmed | An Aminated Bacterial Biosorbent Capable of Effectively Binding Negatively Charged Pollutants in Aqueous Solution |
| title_short | An Aminated Bacterial Biosorbent Capable of Effectively Binding Negatively Charged Pollutants in Aqueous Solution |
| title_sort | aminated bacterial biosorbent capable of effectively binding negatively charged pollutants in aqueous solution |
| url | https://doi.org/10.1260/026361708788059884 |
| work_keys_str_mv | AT sungwookwon anaminatedbacterialbiosorbentcapableofeffectivelybindingnegativelychargedpollutantsinaqueoussolution AT kvijayaraghavan anaminatedbacterialbiosorbentcapableofeffectivelybindingnegativelychargedpollutantsinaqueoussolution AT juanmao anaminatedbacterialbiosorbentcapableofeffectivelybindingnegativelychargedpollutantsinaqueoussolution AT yeoungsangyun anaminatedbacterialbiosorbentcapableofeffectivelybindingnegativelychargedpollutantsinaqueoussolution AT sungwookwon aminatedbacterialbiosorbentcapableofeffectivelybindingnegativelychargedpollutantsinaqueoussolution AT kvijayaraghavan aminatedbacterialbiosorbentcapableofeffectivelybindingnegativelychargedpollutantsinaqueoussolution AT juanmao aminatedbacterialbiosorbentcapableofeffectivelybindingnegativelychargedpollutantsinaqueoussolution AT yeoungsangyun aminatedbacterialbiosorbentcapableofeffectivelybindingnegativelychargedpollutantsinaqueoussolution |