水热碳化
热解
热液循环
碳化
金属
化学工程
磷
碳化作用
化学
碳纤维
材料科学
环境化学
吸附
有机化学
复合材料
工程类
复合数
作者
Changhao Liu,Zhengbo Yue,Ding Ma,Keyu Li,Zhilin Xie,T Zhang,Jin Wang
标识
DOI:10.1016/j.biortech.2024.130524
摘要
In this study, the effect of hydrothermal carbonation (HTC) on the pyrolysis behavior and the distribution of nutrients and metal species of waste-activated sludge (WAS) was investigated. Results showed that the pyrolysis activation energy range of WAS decreased from 11 to 57 kJ/mol to 10-36 kJ/mol when the hydrothermal carbonization was at 160 °C. As indicated by thermodynamic parameters, the hydrothermal carbonization process reduces the pyrolysis reaction activity of the hydrochar. The results of the chemical analysis indicate that hydrothermal carbonization significantly enhances the release of phosphorus and nitrogen, with maximum recovery at a temperature of 200 °C. The standard measurement and testing protocol revealed that hydrothermal carbonization increased the content of non-apatite inorganic P fraction in hydrochar and enhanced the availability of P. Heavy metal analysis shows that hydrothermal carbonization can strengthen the stability of heavy metals in WAS.
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