应用化学 ›› 2022, Vol. 39 ›› Issue (6): 969-979.DOI: 10.19894/j.issn.1000-0518.210269

• 研究论文 • 上一篇    下一篇

乙基纤维素磁性复合材料对溶液中铜离子的吸附性能

曹从军(), 马含笑, 侯成敏, 丁小健, 管飙   

  1. 西安理工大学印刷包装与数字媒体学院,西安 710048
  • 收稿日期:2021-06-02 接受日期:2021-10-29 出版日期:2022-06-01 发布日期:2022-06-27
  • 通讯作者: 曹从军
  • 基金资助:
    陕西省重点科研基地项目(2019HBGC-55)

Adsorption of Cu(Ⅱ) from Solution by Modified Magnetic Ethyl Cellulose

Cong-Jun CAO(), Han-Xiao MA, Cheng-Min HOU, Xiao-Jian DING, Biao GUAN   

  1. School of Printing,Packaging Engineering and Digital Media Technology,Xi′an University of Technology,Xi′an 710048,China
  • Received:2021-06-02 Accepted:2021-10-29 Published:2022-06-01 Online:2022-06-27
  • Contact: Cong-Jun CAO
  • About author:caocongjun@xaut.edu.com
  • Supported by:
    Shaanxi Province Key Scientific Research Base Project(2019HBGC?55)

摘要:

重金属离子对生态环境以及人类健康造成了严重的危害,因此处理水体中的重金属离子迫在眉睫。采用共沉淀法,以乙基纤维素为模版,将四氧化三铁(Fe3O4)纳米颗粒与乙基纤维素复合,制备了乙基纤维素磁性复合材料(EC/Fe3O4)。探究了吸附添加量、溶液pH值和吸附时间等因素对溶液中Cu(Ⅱ)吸附过程的影响。结果表明,EC/Fe3O4表现出良好的吸附速率和吸附性能。吸附4 min,可达到吸附平衡状态。在Cu(Ⅱ)浓度为20 mg/L,pH=7,吸附时间为160 min条件下,EC/Fe3O4的单位吸附量qe为76.98 mg/g,最大去除率为94.68%。在经过8次吸附循环后,单位吸附量为62.21 mg/g。

关键词: 重金属离子, 磁性复合材料, 吸附, 乙基纤维素

Abstract:

Heavy metal ions have caused serious harm to the ecological environment and human health. It is urgent to treat heavy metal ions in water. In this paper, a co-precipitation method was used to prepare ethyl cellulose magnetic composite material (EC/Fe3O4) by using ethyl cellulose as a template to compound Fe3O4 nanoparticles with ethyl cellulose. The influence of the adsorption dosage, pH value of the solution, adsorption time and other factors on the adsorption process of Cu(II) in the solution was explored. The results show that EC/Fe3O4 exhibits good adsorption rate and adsorption performance. The adsorption equilibrium can be reached within 4 min. Under the adsorption conditions of Cu(II) concentration of 20 mg/L,solution pH of 7,and adsorption time of 160 min,the unit adsorption qe of EC/Fe3O4 is 76.98 mg/g, and the maximum removal rate is 94.68%. After 8 adsorption cycles, the unit adsorption capacity is 62.21 mg/g.

Key words: Heavy metal ions, Magnetic composite materials, Adsorption, Ethyl cellulose

中图分类号: