Using aquatic biomass as a solid fuel is limited by its low energy density, low lignin content and high moisture content. This study investigated upgrading aquatic biomass as a solid fuel using hydrothermal carbonization with temperatures in the moderate temperatures range for a reaction time of 30 min. Thermogravimetric analysis (TGA) tests were used to study the combustion behavior of the raw aquatic biomass and its derived hydrochar during the combustion process. Chemical composition analysis indicated that compared to the raw aquatic biomass, the fuel quality of the derived hydrochar had been improved by increasing the carbon contents with a substantial decrease in the volatile matter and ash content. Furthermore, higher fuel quality of the derived hydrochar was observed with increasing hydrothermal temperature. Similarly, based on the TGA test, the hydrochars had increased ignition temperatures, higher combustion temperatures and higher burnout temperatures compared to the raw aquatic biomass. The combustion characteristic index values for all hydrochar samples derived from water hyacinth and cattail leaves were appropriate for combustion.

使用水生生物质作为固体燃料受到其低能量密度、低木质素含量和高水分含量的限制。本研究调查了在中等温度范围内使用水热碳化将水生生物质升级为固体燃料，反应时间为 30 分钟。热重分析 (TGA) 测试用于研究原始水生生物质及其衍生的水碳在燃烧过程中的燃烧行为。化学成分分析表明，与原始水生生物质相比，衍生水炭的燃料质量通过增加碳含量而得到改善，同时挥发物和灰分含量显着降低。此外，随着热液温度的升高，观察到衍生的水焦的燃料质量更高。相似地，根据 TGA 测试，与原始水生生物质相比，水碳具有更高的着火温度、更高的燃烧温度和更高的燃尽温度。来自水葫芦和香蒲叶的所有水炭样品的燃烧特征指数值均适合燃烧。