Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, School of Electric Power, South China University of Technology, Guangzhou 510640, China.
Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, School of Electric Power, South China University of Technology, Guangzhou 510640, China.
Bioresour Technol. 2019 Aug;285:121347. doi: 10.1016/j.biortech.2019.121347. Epub 2019 Apr 13.
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 °C, 230 °C and 280 °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.
本文进行了不同混合比例（30%、50%和 70%）和工艺温度（180°C、230°C 和 280°C）下污水污泥和食物垃圾共水热碳化（co-HTC）的实验，并研究了水热炭的特性和热行为，以确定这些条件的影响。结果表明，共水热碳化得到的水热炭与污水污泥的水热炭相比，具有更高的 C 含量和更高的高位热值。同时，它相对保持较低的 N、S 和 O 含量。根据元素分析和工业分析，这归因于碳化、脱水和脱羧反应。TGA 表明，与污水污泥的水热炭相比，燃烧行为得到了改善。因此，在能源利用领域，用食物垃圾进行共水热碳化是将污水污泥转化为清洁固体燃料的有效方法。
