Jin Yiying, Li Yangyang, Li Jinhui
School of Environment, Tsinghua University, Beijing 100084, China.
School of Environment, Tsinghua University, Beijing 100084, China.
J Environ Manage. 2016 Sep 15;180:291-300. doi: 10.1016/j.jenvman.2016.05.047. Epub 2016 Jun 1.
The effects of thermal pretreatment at moderate temperatures (70, 80 and 90 °C) and high temperatures (120, 140 and 160 °C) over heating durations of 10-120 min on the physical and chemical properties of kitchen waste and on anaerobic digestion were investigated. The results show that thermal pretreatment significantly enhances the solubilisation of organic compounds (chemical oxygen demand, crude proteins, crude fats and volatile fatty acids) and their biodegradability during subsequent anaerobic digestion. High temperature and long heating duration are beneficial for the release and reduction of organic compounds, and the efficiency of subsequent anaerobic digestion is improved markedly under these conditions. Moreover, both the methane production rate and methane yield were observed to increase significantly at moderate treatment temperatures when the anaerobic digestion time was longer than 50 h.
研究了在10 - 120分钟的加热时间内，中等温度（70、80和90°C）和高温（120、140和160°C）的热预处理对厨余垃圾理化性质及厌氧消化的影响。结果表明，热预处理显著提高了有机化合物（化学需氧量、粗蛋白、粗脂肪和挥发性脂肪酸）的溶解率及其在后续厌氧消化过程中的生物降解性。高温和较长的加热时间有利于有机化合物的释放和减少，在此条件下后续厌氧消化效率显著提高。此外，当厌氧消化时间超过50小时时，在中等处理温度下观察到甲烷产生速率和甲烷产量均显著增加。
