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| Preparation technology of composite activated carbon by sludge & rice-straw and its structural characterization |
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| DOI：10.16768/j.issn.1004-874X.2017.10.006 |
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| Abstract: |
| The synthesis of composite activated carbon from municipal sludge in small and medium town，and
rice-straw with ZnCl2 activating reagent by a chemical pyrolysis method was reported. It was carried out to explore the
composite activated carbon adsorption value by controlling the raw material quality ratio（rice-straw and sludge），
liquid-solid ratio（ ZnCl2 and raw material），pyrolysis temperature and pyrolysis time. The composite activated
carbon was characterized by the methods of BET，FT-IR and EDS. The experimental design in Response Surface
Methodology（RSM） was used for designing the experiments as well as for full response surface. The optimum
prodution conditions were raw material quality ratio 1∶2，liquid-solid ratio 1.5，at 470℃ for 1 hour. The composite
activated carbon possessed with Iodine number of 816 mg/g，BET surface area（ SBET） of 669.29 m2/g，microporous
specific surface area of 232.33 m2/g. Furthermore，the product contained olefins，alcohol and phenol functional
groups. The results showed that the performance of thecomposite activated carbon performance was excellent that
prepared by sludge and rice-straw，and it has certain application prospect. |
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