两种具有不同孔隙结构的活性炭对高浓度孔雀石绿的吸附作用。
Adsorptions of high concentration malachite green by two activated carbons having different porous structures.
作者信息
Akmil-Başar C, Onal Y, Kiliçer T, Eren D
机构信息
Inonu University, Faculty of Engineering, Department of Chemical Engineering, Malatya, Turkey.
出版信息
J Hazard Mater. 2005 Dec 9;127(1-3):73-80. doi: 10.1016/j.jhazmat.2005.06.025. Epub 2005 Aug 2.
The adsorption of malachite green (MG) from aqueous solution by two different adsorbents (CZn5, PETNa8) were studied. Adsorbents were prepared from pine sawdust and polyethyleneterephatalate (PET) by chemical activation with ZnCl(2) and NaOH, respectively. The adsorption was carried out in a batch system as a function of dye concentration, pH and contact time. Both adsorbents were found to be very effective in removing the dye at high concentration with adsorption percentage in the order of CZn5 > PETNa8. The pH of dye solution in the range of 6-10, was found favorable for the removal of malachite green by using the two adsorbents at high concentrations. Equilibrium times were 120 and 90 min for CZN5 and PETNa8, respectively. Kinetics of removal MG was studied using Lagergren equation and diffusion phenomena was analyzed using Weber and Morris intraparticle diffusion plots. It was also showed that the adsorption isotherm followed Langmuir model.
研究了两种不同吸附剂（CZn5、PETNa8）对水溶液中孔雀石绿（MG）的吸附情况。吸附剂分别由松木锯末和聚对苯二甲酸乙二酯（PET）通过用ZnCl₂和NaOH进行化学活化制备而成。吸附在间歇系统中进行，考察了染料浓度、pH值和接触时间对吸附的影响。发现两种吸附剂在高浓度下对染料的去除都非常有效，吸附百分比顺序为CZn5 > PETNa8。在6 - 10范围内的染料溶液pH值，有利于使用这两种吸附剂在高浓度下去除孔雀石绿。CZN5和PETNa8的平衡时间分别为120分钟和90分钟。使用 Lagergren 方程研究了去除MG的动力学，并使用Weber和Morris颗粒内扩散图分析了扩散现象。结果还表明吸附等温线符合Langmuir模型。
Zotero 插件