摘要
利用富马酸吸附水溶液中的Cu^(2+),形成的富马酸-铜配合物能够实现铜离子的高效分离,通过分析证明富马酸-铜配合物为一维配位聚合物.相较于传统的吸附剂,富马酸有较快的吸收速率(90 min内达到吸附平衡)和较高的吸附量(最大吸附量为588.2 mg/g).吸附过程符合Langmuir热力学吸附模式.通过研究影响吸附的主要因素如接触时间、溶液中铜离子浓度和pH,表明在弱碱性和有共存离子的条件下,富马酸仍然可以吸附铜离子.铜离子能够从配合物中脱附,得到的富马酸可以循环使用.由于富马酸铜配合物粒径大,易于从水溶液中过滤分离,该方法有望应用于工业废水中铜的回收利用.
Fumaric acid（FMA） has been used as an efficient adsorbent for adsorption of Cu^2＋ from aqueous solution. FMA-Cu complex was prepared during the process of removing Cu^2＋ and after detailed characterizations, FMA-Cu turned out to be a one-dimensional coordination polymer. Compared with traditional adsorbents, FMA had a fast adsorption kinetic（equilibrium achieved within 90 min） and a high adsorption capacity（qm=588.2 mg/g）. The adsorption isotherm was matched well with the Langmuir model. Some factors affecting the adsorption of Cu^2＋ such as contact time, solution concentration and pH were investigated. The results showed that FMA worked well in basic conditions and in coexisted ions environment. Cu^2＋could be desorbed and the FMA could be used repeatedly for Cu^2＋ adsorption. The FMA-Cu complex possessing large particle diameter was extremely facile to filter from aqueous solution, which was expected to be applied to treat industrial effluent.
作者
杨敬军
刘姝菂
桂文君
党金宁
常毓巍
杨瑛
Yang Jing-jun1,2, Liu Shu-di1, Gui Wen-jun1, Dang Jin-ning2, Chang Yu-wei2, Yang Ying1,2(1. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China; 2. Department of Chemistry and Life Sciences, Gansu Normal University for Nationalities, Hezuo 747000, Gansu, China)
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第2期252-257,266,共7页
Journal of Lanzhou University(Natural Sciences)
基金
Supported by the National Natural Science Foundation of China(51474118)
China Postdoctoral Science Foundation(2016M590981)
关键词
吸附
CU^2+
水溶液
富马酸
配位聚合物
adsorption
Cu^2＋
aqueous solution
fumaric acid
coordination polymer
