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Vol.4 , No. 5, Publication Date: Nov. 16, 2017, Page: 72-77
 and malachite green (MG) from aqueous solution. Batch adsorption experiments were conducted to investigate the effects of adsorbate concentration (50 – 250 mg/l), adsorbent particle size (0.05 – 1.0 mm), adsorbent dosage (0.1-0.5g), and adsorption time (30 – 120 min.). The results revealed that the activated carbon prepared from this plant shell was able to remove MB more that MG at all adsorption conditions. Results also showed that adsorption efficiency increase with decrease in adsorbate concentration, decrease in adsorbent particle size, increase in adsorbent dosage and increase in contact time of adsorption. Isotherm studies showed that the adsorption of MB follow Langmuir and Freundlich isotherm but fitted better with Freundlich isotherm why adsorption of malachite green fitted better with Langmuir isotherm.&picture=http://www.aascit.org/aascit/decorators/img/journal/904.jpg)
| [1] | Edet William Nsi, Department of Chemistry, Akwa Ibom State University, Ikot Akpaden, Nigeria. |
| [2] | Aniekan Effiong Akpakpan, Department of Chemistry, Akwa Ibom State University, Ikot Akpaden, Nigeria. |
| [3] | Ifiok Okon Ekwere, Department of Chemistry, Akwa Ibom State University, Ikot Akpaden, Nigeria. |
| [4] | Daniel Peter Udoh, Department of Chemistry, Akwa Ibom State University, Ikot Akpaden, Nigeria. |
Irvingia gabonensis seed shells were converted into activated carbon using ZnCl2 as the activating agent and used for the adsorption of methylene blue (MB) and malachite green (MG) from aqueous solution. Batch adsorption experiments were conducted to investigate the effects of adsorbate concentration (50 – 250 mg/l), adsorbent particle size (0.05 – 1.0 mm), adsorbent dosage (0.1-0.5g), and adsorption time (30 – 120 min.). The results revealed that the activated carbon prepared from this plant shell was able to remove MB more that MG at all adsorption conditions. Results also showed that adsorption efficiency increase with decrease in adsorbate concentration, decrease in adsorbent particle size, increase in adsorbent dosage and increase in contact time of adsorption. Isotherm studies showed that the adsorption of MB follow Langmuir and Freundlich isotherm but fitted better with Freundlich isotherm why adsorption of malachite green fitted better with Langmuir isotherm.
Keywords
Adsorption, Methylene Blue, Malachite Green, Equilibrium, Isotherm
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