Removal of radiocobalt from aqueous solution by Mg2Al layered double hydroxide

被引：0
|
作者：
Donglin Zhao
Ying Wang
Han Xuan
Yan Chen
Tian Cao
机构：
[1] Anhui University of Architecture,School of Materials and Chemical Engineering
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2013年 / 295卷
关键词：
Co(II); Mg; Al LDH; Adsorption;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The adsorption behavior of radiocobalt by Mg2Al layered double hydroxide (Mg2Al LDH) was studied as a function of contact time, pH, ionic strength, foreign ions, FA and temperature under ambient conditions. The results showed that the kinetic adsorption could be described by a pseudo-second order model very well. The adsorption of Co(II) on Mg2Al LDH was strongly dependent on pH and ionic strength. The presence of FA enhanced the adsorption of Co(II) on Mg2Al LDH at low pH, whereas reduced Co(II) adsorption at high pH. The Langmuir model fitted the adsorption isotherms of Co(II) better than the Freundlich and D–R model at three different temperatures of 303, 323 and 343 K. The thermodynamic parameters (ΔH°, ΔS° and ΔG°) calculated from the temperature dependent adsorption isotherms indicated that the adsorption process of Co(II) on Mg2Al LDH was endothermic and spontaneous. The results show that Mg2Al LDH is a promising material for the preconcentration and separation of pollutants from large volumes of aqueous solutions.
引用
收藏
页码：1251 / 1259
页数：8
相关论文
共 50 条
  • [1] Removal of radiocobalt from aqueous solution by Mg2Al layered double hydroxide
    Zhao, Donglin
    Wang, Ying
    Xuan, Han
    Chen, Yan
    Cao, Tian
    JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2013, 295 (02) : 1251 - 1259
  • [2] The adsorption of Pb(II) on Mg2Al layered double hydroxide
    Zhao, Donglin
    Sheng, Guodong
    Hu, Jun
    Chen, Changlun
    Wang, Xiangke
    CHEMICAL ENGINEERING JOURNAL, 2011, 171 (01) : 167 - 174
  • [3] Effect of environmental parameters on the sequestration of radionickel by Mg2Al layered double hydroxide
    Donglin Zhao
    Yi Ding
    Shaohua Chen
    Han Xuan
    Yan Chen
    Journal of Radioanalytical and Nuclear Chemistry, 2013, 298 : 1197 - 1206
  • [4] Effect of environmental parameters on the sequestration of radionickel by Mg2Al layered double hydroxide
    Zhao, Donglin
    Ding, Yi
    Chen, Shaohua
    Xuan, Han
    Chen, Yan
    JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2013, 298 (02) : 1197 - 1206
  • [5] Immobilization of uranium(VI) onto Mg2Al layered double hydroxide: role of key geochemical parameters
    Donglin Zhao
    Shaojie Feng
    Han Xuan
    Yan Chen
    Journal of Radioanalytical and Nuclear Chemistry, 2014, 300 : 1027 - 1037
  • [6] Mg/Al-layered double hydroxide modified biochar for simultaneous removal phosphate and nitrate from aqueous solution
    Li, Shuqi
    Ma, Xiaolong
    Ma, Zichuan
    Dong, Xutong
    Wei, Ziye
    Liu, Xinyu
    Zhu, Longpan
    ENVIRONMENTAL TECHNOLOGY & INNOVATION, 2021, 23
  • [7] Entrapment of Mg-Al layered double hydroxide in calcium alginate beads for phosphate removal from aqueous solution
    Han, Yong-Un
    Lee, Won-Suk
    Lee, Chang-Gu
    Park, Seong-Jik
    Kim, Ki-Woo
    Kim, Song-Bae
    DESALINATION AND WATER TREATMENT, 2011, 36 (1-3) : 178 - 186
  • [8] Removal of arsenate from aqueous solution by nanocrystalline Mg/Al layered double hydroxide: sorption characteristics, prospects, and challenges
    Goh, K. H.
    Lim, T. T.
    Dong, Z. L.
    WATER SCIENCE AND TECHNOLOGY, 2010, 61 (06) : 1411 - 1417
  • [9] Adsorption of Phthalate Esters from Aqueous Solution by Mg-Al Layered Double Hydroxide
    Wang, Long
    Gao, Xu
    Guo, Jinsong
    Zhang, Wen
    Xu, Yang
    FUTURE MATERIAL RESEARCH AND INDUSTRY APPLICATION, PTS 1 AND 2, 2012, 455-456 : 939 - +
  • [10] Adsorption of phthalate esters from aqueous solution by Mg-Al layered double hydroxide
    Wang, Long
    Gao, Xu
    Guo, Jinsong
    Zhang, Wen
    Xu, Yang
    2011 INTERNATIONAL CONFERENCE ON FUZZY SYSTEMS AND NEURAL COMPUTING (FSNC 2011), VOL III, 2011, : 492 - 496
12345