College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
Waste Manag. 2018 Jul;77:185-194. doi: 10.1016/j.wasman.2018.05.022. Epub 2018 May 26.
Hydrochar was produced from food waste under varying hydrothermal carbonization (HTC) conditions, and was pelletized using molasses and molasses/lime binders for fuel pellet production. The physico-chemical properties, density, mechanical properties, and water resistance, and combustion characteristics of the hydrochar pellets were investigated. The results indicated that molasses pellets and molasses/lime pellets exhibited increased compressive strength, density, and impact resistance due tothe "solid bridge" that formed from molasses recrystallization and agglomeration by lime. The hydrochar samples prepared at 230 °C and 260 °C, with long residence times of 8 h, showed excellent compressive strength and impact resistance index (IRI). Both molasses pellets and molasses/lime pellets exhibited slightly increased equilibrium moisture content (EMC), with the former showing a high water-resistance index (WRI) in the immersion test. Thermogravimetric analyses indicated that the molasses pellets had a lower ignition temperature and higher combustion interval than those of the molasses/lime pellets.
水热碳化法（HTC）条件下由食物垃圾制备水炭，并使用糖蜜和糖蜜/石灰黏合剂将其制成颗粒状用于燃料颗粒的生产。对水炭颗粒的物理化学性质、密度、机械性能和耐水性以及燃烧特性进行了研究。结果表明，由于糖蜜重结晶和石灰团聚形成的“固体桥”，糖蜜颗粒和糖蜜/石灰颗粒的抗压强度、密度和抗冲击性均有所提高。在 230°C 和 260°C 下，停留时间为 8 小时的水热碳化样品显示出优异的抗压强度和抗冲击性指数（IRI）。糖蜜颗粒和糖蜜/石灰颗粒的平衡水分含量（EMC）均略有增加，前者在浸泡试验中具有较高的耐水性指数（WRI）。热重分析表明，糖蜜颗粒的着火温度低于糖蜜/石灰颗粒，燃烧间隔时间高于糖蜜/石灰颗粒。
