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| Preparation and Characterization of Mesoporous Activated Carbon Prepared from Deinking Residue Using Phosphoric Acid as Activator |
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| DOI：10.11980/j.issn.0254-508X.2017.01.007 |
| Key Words:phosphoric acid deinking residue mesoporous activated carbon |
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| Abstract:The mesoporous activated carbon was prepared using deinking residue as raw materials and phosphoric acid as activating agent. The optimum preparation conditions were studied and the iodine adsorption value and methylene blue adsorption value were taken as evaluation index. The optimal conditions were as the follows: the ratio of material to liquid and the concentration of phosphoric acid were 1∶3.5 and 70%, respectively, the activating time was 90 min at 450℃. Under these conditions, the iodine adsorption capacity and methylene blue adsorption value of activated carbon reached to 421.98 mg/g, 10.97 mL/g, respectively. The N2 adsorption desorption isotherms results indicated that the specific surface area, total pore volume and mesoporosity rate of the activated carbon were 715.576 m2/g, 0.353 mL/g and 97.45%, respectively. FT-IR analysis of chemical properties of activated carbon showed that there were varieties of functional groups, such as hydroxyl on the surface, XRD and scanning electron microscope analysis indicated that activated carbon had high crystallization, the microcrystalline was irregular and the pore structure was stable. Phosphoric acid activation was proven an effective technology to prepare mesoporous activated carbon using the deinking residue． |
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