Journal
BIORESOURCE TECHNOLOGY
Volume 285, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.121347
Keywords
Hydrothermal carbonization; Sewage sludge; Food waste; Solid fuel
Funding
- National Natural Science Foundation of China [51476060]
- Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization [2013A061401005]
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The experiments of co-hydrothermal carbonization (co-HTC) of sewage sludge and food waste in different mixing ratio (30%, 50% and 70%) and process temperature (180 degrees C, 230 degrees C and 280 degrees C) were conducted in this paper. And the hydrochars properties and thermal behaviors were investigated to determine the effects of the conditions. The results showed that the hydrochars derived from co-HTC possessed higher C content, higher HHV compared with the hydrochar of sewage sludge. Meanwhile, it maintained low N, S and O content relatively. It ascribed to the carbonization, dehydration and decarboxylation reactions according to the ultimate analysis and proximate analysis. And the TGA indicated that the combustion behaviors got better compared with the hydrochar of sewage sludge. Therefore, the co-HTC with food waste is an effective way to transform sewage sludge into clean solid fuel in the field of energy utilization.
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