Analysis of the combustion of sewage sludge-derived fuel by a thermogravimetric method in China |
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| Authors: | Jianguo Jiang Xuejuan Du Shihui Yang |
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| Institution: | 1. Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany;2. FU Berlin, Department of Biology, Chemistry and Pharmacy, Takustraße 3, 14195 Berlin, Germany;3. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | The treatment and disposal of sewage sludge are significant environmental problems in China. The reuse of sewage sludge for fuel could be an effective solution. The aim of this study was to characterize the behavior of sludge-derived fuel during combustion by a thermogravimetric method. The combustion profiles obtained showed four obvious weight loss regions. The results of dynamics analysis showed that first-order reactions together with Arrhenius’ law explained reasonably well the different stages of weight loss in the samples. Three temperature regions (162–327 °C, 367–445 °C, and 559–653 °C for sawdust and 162–286 °C, 343–532 °C, and 609–653 °C for coal) in each derivative thermogravimetry (DTG) curve corresponded well with the Arrhenius equation. The reactivity of sludge was lower than that of samples containing sawdust, but higher than that of coal-containing samples. These data demonstrate that sludge-derived fuel has better combustion characteristics than sludge, sawdust, or coal. |
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