摘要
以腈纶废丝为原料制得含羧基、酰胺基和咪唑啉基等多种官能团的球形螯合吸附剂,研究其对Cr(Ⅵ)的吸附热力学行为。实验结果表明,吸附剂吸附效果与溶液的pH值、吸附时间以及吸附温度密切相关。在一定浓度范围内,该球形螯合吸附剂对Cr(Ⅵ)的吸附符合Langmuir吸附等温式和Freundlich吸附等温式。吸附为吸热过程,吸附剂对Cr(Ⅵ)的吸附容量随吸附温度的升高而增大;当实验温度一定时,随着吸附质初始浓度的增加,吸附势降低。
A novel spherical chelation adsorbe polyacrylonitrile.Then the study was conducted regarding th nt was prepared by adopting the waste e adsorption behavior of Cr（ VI ） on the above chelation adsorbent from aqueous solutions by static way. The results suggested that, the pH of aqueous solutions, the time and the temperature related to adsorption closely. Within the observed concentration range,the sorption isotherm fitted with both of the form of the Langmuir equation and the Freundlich equation.The adsorption behavior of Cr（ VI ） is a endothermic reaction, and with higher temperature, the adsorption capacity is higher. In the condition of constant temperature, the adsorption potential becomes low with the initial concentration increasing.
出处
《齐鲁工业大学学报》
2016年第1期13-17,共5页
Journal of Qilu University of Technology
基金
国家自然科学基金(21577018)
关键词
球形螯合吸附剂
静态吸附
吸附等温式
吸附势
spherical chelation adsorbent
static adsorption
sorption isotherm
adsorption potential
