Samiey Babak, Farhadi Saeid
Acta Chim Slov. 2013;60(4):763-73.
NiO nanoparticle was used to adsorb fuchsin acid (FA) from aqueous solution. In the used concentration range of FA, its adsorption isotherms on NiO nanoparticles were three-region. NiO nanoparticle was prepared via the thermal decomposition of the tris(ethylenediamine)Ni(II) nitrate complex as a new precursor. In this work, effects of temperature, concentration, particle size, shaking rate, contact time, pH of the solution were investigated. Adsorption process was exothermic in the first and second regions and endothermic in the third region. Adsorption kinetics was studied by a number of equations including the KASRA, pseudo-first-order, pseudo-second-order, Elovich, Avrami and pore-diffusion equations. Adsorption acceleration and adsorption velocity values of this process were obtained by the KASRA equation and it was shown that with increase in FA concentration or temperature or shaking rate, initial adsorption velocity values of process increase.
采用氧化镍纳米颗粒从水溶液中吸附品红酸（FA）。在所使用的FA浓度范围内，其在氧化镍纳米颗粒上的吸附等温线呈三区特征。通过热分解三（乙二胺）镍（II）硝酸盐配合物作为一种新的前驱体制备了氧化镍纳米颗粒。在本工作中，研究了温度、浓度、粒径、振荡速率、接触时间、溶液pH值的影响。吸附过程在第一和第二区域是放热的，在第三区域是吸热的。通过包括KASRA、准一级、准二级、埃洛维奇、阿弗拉米和孔扩散方程在内的多个方程研究了吸附动力学。通过KASRA方程获得了该过程的吸附加速和吸附速度值，结果表明，随着FA浓度、温度或振荡速率的增加，该过程的初始吸附速度值增大。
