摘要
为降低铀对环境的影响,研究纳米磁流体对铀(VI)的吸附行为.用沉淀法制备了磁粒径10~20nm的Fe2O2磁流体,考察了该磁磁流体对铀(VI)吸附的各种影响因素,结果表明:在纳米磁流体浓度为2.5∥L、温度35~C、pH=3、吸附时间t=30min的条件下,对3×1014mol/L铀的吸附萃取率可达到84.15%.该吸附过程符合假设的二级动力学模型.
The water based ferrofluids with saturated magnetization 10 -20 nm was pre- pared by chemical coprecipitation, which was characterized by TEM. The adsorption of Ura- nyl ion on the of ferrofluids was studied in this paper. The result indicates that the optimum experiment condition is the ferro fluids ion of 2.5 g/L, temperature35~C , pH value 3 and adsorption time 30 rain, under which circumstances, the extraction rate of the Uranyl ion (3 x 10-4tool/L) reaches 84. 15%. The adsorption process follows kinetics, which indi- cates the adsorption is a monolaper adsorption.
出处
《南华大学学报(自然科学版)》
2011年第2期66-69,共4页
Journal of University of South China:Science and Technology
基金
湖南省科技厅基金资助项目(2009FJ3116)
