Pb(II) adsorption from aqueous solutions by raw and treated biomass of maize stover – a comparative study
The potential to remove Pb(II) ion from wastewater treatment systems using raw and treated maize stover through adsorption was investigated in batch experiments. To achieve this, batch mode experiments were conducted choosing specific parameters such as pH (2–8), dosage concentration (2–30 g L−1), c...
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Elsevier
2016
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0957582014000895 http://hdl.handle.net/11408/1537 |
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| author | Guyo, Upenyu Mhonyera, Joylene Moyo, Mambo |
| author_facet | Guyo, Upenyu Mhonyera, Joylene Moyo, Mambo |
| author_sort | Guyo, Upenyu |
| collection | DSpace |
| description | The potential to remove Pb(II) ion from wastewater treatment systems using raw and treated maize stover through adsorption was investigated in batch experiments. To achieve this, batch mode experiments were conducted choosing specific parameters such as pH (2–8), dosage concentration (2–30 g L−1), contact time (5–180 min), temperature (20–45 °C) and metal ion concentrations (10–50 mg L−1). Adsorption was pH-dependent showing a maximum at pH value 5. The equilibrium sorption capacities of raw and treated maize stover were 19.65 and 27.10 mg g−1, respectively. The adsorption data fitted well to the Langmuir isotherm model. Kinetic studies revealed that the adsorption process followed pseudo-second-order model. The calculated thermodynamic parameters showed that the adsorption of Pb(II) was spontaneous and exothermic in nature. Consequently, this study demonstrated that both raw and treated maize stover could be used as adsorbents for the treatment of Pb(II) from industrial wastewaters. |
| format | Article |
| id | ir-11408-1537 |
| institution | My University |
| language | English |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | ir-11408-15372022-06-27T13:49:06Z Pb(II) adsorption from aqueous solutions by raw and treated biomass of maize stover – a comparative study Guyo, Upenyu Mhonyera, Joylene Moyo, Mambo Adsorption; Pb(II); Kinetics; Adsorption isotherms; Raw maize stover; Treated maize stover The potential to remove Pb(II) ion from wastewater treatment systems using raw and treated maize stover through adsorption was investigated in batch experiments. To achieve this, batch mode experiments were conducted choosing specific parameters such as pH (2–8), dosage concentration (2–30 g L−1), contact time (5–180 min), temperature (20–45 °C) and metal ion concentrations (10–50 mg L−1). Adsorption was pH-dependent showing a maximum at pH value 5. The equilibrium sorption capacities of raw and treated maize stover were 19.65 and 27.10 mg g−1, respectively. The adsorption data fitted well to the Langmuir isotherm model. Kinetic studies revealed that the adsorption process followed pseudo-second-order model. The calculated thermodynamic parameters showed that the adsorption of Pb(II) was spontaneous and exothermic in nature. Consequently, this study demonstrated that both raw and treated maize stover could be used as adsorbents for the treatment of Pb(II) from industrial wastewaters. 2016-06-09T10:24:35Z 2016-06-09T10:24:35Z 2014 Article 0957-5820 http://www.sciencedirect.com/science/article/pii/S0957582014000895 http://hdl.handle.net/11408/1537 en Process Safety and Environmental Protection;Vol. 93; p. 192-200 open Elsevier |
| spellingShingle | Adsorption; Pb(II); Kinetics; Adsorption isotherms; Raw maize stover; Treated maize stover Guyo, Upenyu Mhonyera, Joylene Moyo, Mambo Pb(II) adsorption from aqueous solutions by raw and treated biomass of maize stover – a comparative study |
| title | Pb(II) adsorption from aqueous solutions by raw and treated biomass of maize stover – a comparative study |
| title_full | Pb(II) adsorption from aqueous solutions by raw and treated biomass of maize stover – a comparative study |
| title_fullStr | Pb(II) adsorption from aqueous solutions by raw and treated biomass of maize stover – a comparative study |
| title_full_unstemmed | Pb(II) adsorption from aqueous solutions by raw and treated biomass of maize stover – a comparative study |
| title_short | Pb(II) adsorption from aqueous solutions by raw and treated biomass of maize stover – a comparative study |
| title_sort | pb(ii) adsorption from aqueous solutions by raw and treated biomass of maize stover – a comparative study |
| topic | Adsorption; Pb(II); Kinetics; Adsorption isotherms; Raw maize stover; Treated maize stover |
| url | http://www.sciencedirect.com/science/article/pii/S0957582014000895 http://hdl.handle.net/11408/1537 |
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