硫酸化壳聚糖/聚乙烯醇吸收膜从水溶液中去除铜镍离子的研究-制备和吸附研究。
Sulfated chitosan/PVA absorbent membrane for removal of copper and nickel ions from aqueous solutions-Fabrication and sorption studies.
机构信息
Polymer Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City for Scientific Research and Technology Applications (CSRTA), New Borg El-Arab City 21934, Alexandria, Egypt.
Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, 37235, USA.
出版信息
Carbohydr Polym. 2017 Jun 1;165:149-158. doi: 10.1016/j.carbpol.2016.12.039. Epub 2017 Jan 20.
Novel absorbents for the removal of Cu and Ni ions from aqueous solutions were prepared from solution cast sulfated chitosan/polyvinyl alcohol membranes (SCS/PVA) and their properties were investigated. FTIR, SEM, XRD and TGA analyses were used to determine membrane structure. The effect of environmental parameters on absorption was studied, including pH, contact time, temperature and the initial concentration of Ni and Cu ions. Freundlich and Langmuir absorption isotherms were fitted to experimental data and a pseudo-second order rate equation was employed to model the kinetics of uptake for several copper and nickel ion concentrations. The results indicate that the affinity of an SCS/PVA membrane for Cu ions was higher than that for Ni ions. The study demonstrated that the SCS/PVA system can be utilized as highly efficient sorbents, to extract Ni and Cu from aqueous feed solutions.
从溶液浇铸的磺化壳聚糖/聚乙烯醇膜（SCS/PVA）制备了用于从水溶液中去除 Cu 和 Ni 离子的新型吸收剂，并研究了它们的性能。使用 FTIR、SEM、XRD 和 TGA 分析来确定膜结构。研究了环境参数对吸收的影响，包括 pH、接触时间、温度以及 Ni 和 Cu 离子的初始浓度。用 Freundlich 和 Langmuir 吸附等温线拟合实验数据，并采用拟二级速率方程对几种铜和镍离子浓度的吸收动力学进行建模。结果表明，SCS/PVA 膜对 Cu 离子的亲和力高于对 Ni 离子的亲和力。研究表明，SCS/PVA 体系可以用作高效吸附剂，从水进料溶液中提取 Ni 和 Cu。
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