Isotherm study of the biosorption of Cu (II) from aqueous solution by vigna subterranea (L.) verdc hull
The removal of Cu(II) ions from aqueous solutions is critical to minimize its toxicity to both plants and animals. Vigna subterranea (l.) Verdc hull (VSVH) was investigated for its potential to remove Cu(II) ions from wastewaters. Batch equilibrium studies were carried out to optimize pH, contact ti...
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International Journal of Scientific and Technology Research
2016
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| Online Access: | https://www.researchgate.net/publication/259752198 http://hdl.handle.net/11408/1576 |
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| author | Nharingo, Tichaona Muzondo, Maria N. Madungwe, Emaculate Chigondo, Fidelis Guyo, Upenyu Nyamunda, Benias C. |
| author_facet | Nharingo, Tichaona Muzondo, Maria N. Madungwe, Emaculate Chigondo, Fidelis Guyo, Upenyu Nyamunda, Benias C. |
| author_sort | Nharingo, Tichaona |
| collection | DSpace |
| description | The removal of Cu(II) ions from aqueous solutions is critical to minimize its toxicity to both plants and animals. Vigna subterranea (l.) Verdc hull (VSVH) was investigated for its potential to remove Cu(II) ions from wastewaters. Batch equilibrium studies were carried out to optimize pH, contact time, and dosage at constant temperature (25 ± 1 oC) and agitation rate (180 rpm). The effect of initial Cu(II) ion concentration was investigated under optimized conditions (pH, 6; contact time of 60 minutes and dosage of 6 g/L) and the equilibrium data were analyzed using two parameter isotherms; Temkin, Langmuir and Freundlich models. The equilibrium data fitted the isotherms in the order; Langmuir > Freundlich > Temkin, all with R2 > 0.98. The biosorption of Cu(II) ions by VSVH was found to be favorable (0 < RL< 1 and 1/n < 1), endothermic, spontaneous (∆Go = -11.11 kJ/mol) and chemisorption in nature. Very high removal efficiency and maximum sorption capacity were realized indicating the viability of the removal of Cu(II) ions by the novel biosorbent. The use of VSVH for the removal of Cu(II) ions from wastewaters can be implemented as a standalone technology or coupled with the conventional methods in order to complement their wastewater cleaning potentials. |
| format | Article |
| id | ir-11408-1576 |
| institution | My University |
| language | English |
| publishDate | 2016 |
| publisher | International Journal of Scientific and Technology Research |
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| spelling | ir-11408-15762022-06-27T13:49:06Z Isotherm study of the biosorption of Cu (II) from aqueous solution by vigna subterranea (L.) verdc hull Nharingo, Tichaona Muzondo, Maria N. Madungwe, Emaculate Chigondo, Fidelis Guyo, Upenyu Nyamunda, Benias C. Biosorption, Cu(II) ions, Equilibrium, Temkin, Vigna subterranea (L.) Verdc. The removal of Cu(II) ions from aqueous solutions is critical to minimize its toxicity to both plants and animals. Vigna subterranea (l.) Verdc hull (VSVH) was investigated for its potential to remove Cu(II) ions from wastewaters. Batch equilibrium studies were carried out to optimize pH, contact time, and dosage at constant temperature (25 ± 1 oC) and agitation rate (180 rpm). The effect of initial Cu(II) ion concentration was investigated under optimized conditions (pH, 6; contact time of 60 minutes and dosage of 6 g/L) and the equilibrium data were analyzed using two parameter isotherms; Temkin, Langmuir and Freundlich models. The equilibrium data fitted the isotherms in the order; Langmuir > Freundlich > Temkin, all with R2 > 0.98. The biosorption of Cu(II) ions by VSVH was found to be favorable (0 < RL< 1 and 1/n < 1), endothermic, spontaneous (∆Go = -11.11 kJ/mol) and chemisorption in nature. Very high removal efficiency and maximum sorption capacity were realized indicating the viability of the removal of Cu(II) ions by the novel biosorbent. The use of VSVH for the removal of Cu(II) ions from wastewaters can be implemented as a standalone technology or coupled with the conventional methods in order to complement their wastewater cleaning potentials. 2016-06-16T08:05:04Z 2016-06-16T08:05:04Z 2013 Article 2277-8616 https://www.researchgate.net/publication/259752198 http://hdl.handle.net/11408/1576 en International Journal of Scientific and Technology Research;Vol. 2, No. 4; p. 199-206 open International Journal of Scientific and Technology Research |
| spellingShingle | Biosorption, Cu(II) ions, Equilibrium, Temkin, Vigna subterranea (L.) Verdc. Nharingo, Tichaona Muzondo, Maria N. Madungwe, Emaculate Chigondo, Fidelis Guyo, Upenyu Nyamunda, Benias C. Isotherm study of the biosorption of Cu (II) from aqueous solution by vigna subterranea (L.) verdc hull |
| title | Isotherm study of the biosorption of Cu (II) from aqueous solution by vigna subterranea (L.) verdc hull |
| title_full | Isotherm study of the biosorption of Cu (II) from aqueous solution by vigna subterranea (L.) verdc hull |
| title_fullStr | Isotherm study of the biosorption of Cu (II) from aqueous solution by vigna subterranea (L.) verdc hull |
| title_full_unstemmed | Isotherm study of the biosorption of Cu (II) from aqueous solution by vigna subterranea (L.) verdc hull |
| title_short | Isotherm study of the biosorption of Cu (II) from aqueous solution by vigna subterranea (L.) verdc hull |
| title_sort | isotherm study of the biosorption of cu (ii) from aqueous solution by vigna subterranea (l.) verdc hull |
| topic | Biosorption, Cu(II) ions, Equilibrium, Temkin, Vigna subterranea (L.) Verdc. |
| url | https://www.researchgate.net/publication/259752198 http://hdl.handle.net/11408/1576 |
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