Title :
Effects of iron-based additives in the preparation of magnetic coal-based activated carbon
Author :
Zhang, Jun ; Xie, Qiang ; Chen, Xi ; Liu, Juan ; Yao, Xin
Author_Institution :
Sch. of Chem. & Environ. Eng., Univ. of Min. & Technol. (Beijing), Beijing, China
Abstract :
Magnetization of activated carbon is one of the promising ways for separation of spent activated carbon from contaminants and regeneration. Magnetic coal-based activated carbons(MAC) were prepared from Taixi anthracite in the presence of Fe3O4, Fe2(C2O4)3 and Fe(NO3)3 respectively. The magnetic activated carbon samples were characterized by vibrating sample magnetometer (VSM), X-ray diffraction (XRD), N2 adsorption and scanning electric microscope (SEM). The results show that the iron-based additives can enhance the magnetic properties of activated carbon which the saturation magnetization value of MAC with Fe3O4 addition is biggest. The MAC can be easily magnetized because residual Fe3O4 and any Fe formed are sufficient to create magnetic properties. Moreover, the addition of Fe3O4 and Fe(NO3)3 can catalyze carbonization and activation process, which contributed to the development of mesopore and micropore in activated carbons.
Keywords :
X-ray diffraction; activated carbon; additives; iron compounds; magnetisation; magnetometers; scanning electron microscopes; separation; Fe(NO3)3; Fe2(C2O4)3; Fe3O4; Taixi anthracite; X-ray diffraction; activated carbon magnetization; activated carbon mesopore; activated carbon micropore; activated carbon separation; activation process; carbonization process; iron-based additive; magnetic coal-based activated carbon; nitrogen adsorption; saturation magnetization; scanning electric microscope; vibrating sample magnetometer; Additives; Carbon; Carbon dioxide; Iron; Magnetic separation; Magnetometers; Saturation magnetization; Adsorptive capability; Coal-based activated carbon; Magnetic properties;
Conference_Titel :
Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-9172-8
DOI :
10.1109/RSETE.2011.5964077
