ZHANG Long, XUE Zhenhua, LI Zhenglan
(College of Material Science and Art Design, Inner Mongolia Agriculture University, Hohhot 010018, Inner Mongolia, China)
Abstract: In order to explore the utilization of coal liquefaction residue from liquid fuel oil production, porous ceramic materials were prepared by molding methods with indirect coal liquefaction residue, using pore-forming agent as an additive. The micro-morphologies of the products obtained with different batching ratios when the particle size, sintering temperature, holding time, molding pressure were constant were characterized by scanning electron microscope and their adsorption of Pb2+ was also studied. The best condition for adsorption of Pb2+ onto these materials were determined by changing the initial solution concentration of Pb2+,the pH value of the solution, the adsorbing temperature and time. The test results show that, when the solution concentration of Pb2+ was 0.025mol/L, the pH value was 5.5, the adsorption time was 80 min and the temperature was 30 °C, the maximum adsorption capacity was up to 333.32 mg/g.
Key words: indirect coal liquefaction residue; pore former; binding agent; SEM; adsorption; Pb2+