Hydrothermal Carbonization of Typical Components of Kitchen Garbage
Various special carbonous materials (microsphere, nano-fiber and sponge-like porous carbon) were successfully synthesized via hydrothermal carbonization (HTC) process by using typical components of kitchen garbage such as raw materials, NaCl, citric acid and Fe(NO3)3 were employed as activators and catalysts. The obtained carbonous materials were characterized by XRD, SEM, TEM, FT-IR and other analysis. The results showed that both precursor and additive greatly affected the structural and chemical properties of the final carbonized products. Additives have significantly increased the carbon yields and nitrogen content in the final products, and also stabilized the surface of the nano-particles. Surface stabilizer, lipid and protein contained in the raw materials had crucial influences on the surface morphologies of the nano-particles. In addition, a hybrid compound of Fe3O4@C was synthesized by HTC of soybean in the presence of Fe(NO3)3. The novel product contained a large number of reactive oxygen and nitrogen functional groups on the surface, hence a good magnetic absorbent for water purification. Accordingly, it is believed that HTC process developed in the present study is an effective way for kitchen waste treatment, and is also a promising candidate for synthesis of novel carbon-based materials.
Qian-fang WU Fu-shen ZHANG
Department of Environmental Nano-materials, Research Center for Eco-Environmental Sciences, CAS, Beijing, China
国际会议
The Fifth International Conference on Waste Management and Technology(第五届固体废物管理与技术国际会议)
北京
英文
188-192
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）