High-selective cyclic adsorption and magnetic recovery performance of magnetic lithium-aluminum layered double hydroxides (MLDHs) in extracting from ultrahigh Mg/Li+ ratio brines

被引:80
作者
Chen, Jun [1 ,3 ]
Lin, Sen [1 ,2 ]
Yu, Jianguo [1 ,2 ,3 ]
机构
[1] East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai, Peoples R China
[2] East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai, Peoples R China
[3] East China Univ Sci & Technol, Minist Educ, Engn Res Ctr Salt Lake Resources Proc Engn, Shanghai, Peoples R China
基金
中国国家自然科学基金;
关键词
Ultrahigh Mg/Li ratio brine; Lithium adsorbents; Lithium-aluminum layered double hydroxides; Adsorption performance; Magnetic recovery; IRON-OXIDE NANOPARTICLES; SALT LAKE BRINE; AQUEOUS-SOLUTIONS; MAGNESIUM; REMOVAL; DEFLUORIDATION; SEPARATION; ISOTHERM; CHLORIDE; SORPTION;
D O I
10.1016/j.seppur.2020.117710
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The lithium-aluminum layered double hydroxides (Li/Al-LDHs) have been proved to be feasible to efficient lithium extraction from low-grade brines with ultrahigh Mg/Li ratios as Li+ adsorbents without elution damages. In this study, considering a sharp decline on the adsorption capacity resulting from the granulation in industrial applications, novel adsorbents, magnetic Li/Al layered double hydroxides (MLDHs), were synthesized via a simple staged coprecipitation method. The characterization and adsorption results proved doped Fe3O4 nanoparticles as magnetic cores were not harmful to the crystal phase and stability of the effective adsorption component Li/Al-LDHs in MLDHs. MLDHs exhibited favorable selective and preferential adsorption for Li+ in the Qarhan Salt Lake old brine with Mg/Li mass ratio of 284, whose adsorption capacity reached up to about 6.0 mg/g and Mg/Li ratios in desorption solution less than 0.4 with recovered Mg/Li ratios less than 6.0. By virtue of the superparamagnetism of Fe3O4 nanoparticles, a rapid recovery of MLDHs from brines after adsorption could be achieved easily using an external magnetic field. Furthermore, after 8 adsorption-desorption cycles, both the adsorption capacity and crystal structure of MLDHs had no significant change, indicating the great potential in the industrial lithium extraction from brines involving long-term recycling for adsorbents.
引用
收藏
页数:9
相关论文
共 40 条
[1]   Adsorption of 4-chlorophenol from aqueous solutions by xad-4 resin: Isotherm, kinetic, and thermodynamic analysis [J].
Bilgili, M. Sinan .
JOURNAL OF HAZARDOUS MATERIALS, 2006, 137 (01) :157-164
[2]   Efficient defluoridation of water using reusable nanocrystalline layered double hydroxides impregnated polystyrene anion exchanger [J].
Cai, Jianguo ;
Zhang, Yanyang ;
Pan, Bingcai ;
Zhang, Weiming ;
Lv, Lu ;
Zhang, Quanxing .
WATER RESEARCH, 2016, 102 :109-116
[3]   Magnetic Fe3O4/ZnCr-layered double hydroxide composite with enhanced adsorption and photocatalytic activity [J].
Chen, Dan ;
Li, Yang ;
Zhang, Jia ;
Zhou, Ji-zhi ;
Guo, Yun ;
Liu, Hong .
CHEMICAL ENGINEERING JOURNAL, 2012, 185 :120-126
[4]   Quantitative effects of Fe3O4 nanoparticle content on Li+ adsorption and magnetic recovery performances of magnetic lithium-aluminum layered double hydroxides in ultrahigh Mg/Li ratio brines [J].
Chen, Jun ;
Lin, Sen ;
Yu, Jianguo .
JOURNAL OF HAZARDOUS MATERIALS, 2020, 388
[5]   Lithium Enrichment of High Mg/Li Ratio Brine by Precipitation of Magnesium via Combined CO2 Mineralization and Solvent Extraction [J].
Chen, Peng ;
Tang, Siyang ;
Yue, Hairong ;
Liu, Changjun ;
Li, Chun ;
Liang, Bin .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2017, 56 (19) :5668-5678
[6]   Intraparticle diffusion processes during acid dye adsorption onto chitosan [J].
Cheung, W. H. ;
Szeto, Y. S. ;
McKay, G. .
BIORESOURCE TECHNOLOGY, 2007, 98 (15) :2897-2904
[7]   Synthesis of Iron-Doped Manganese Oxides with an Ion-Sieve Property: Lithium Adsorption from Bolivian Brine [J].
Chitrakar, Ramesh ;
Makita, Yoji ;
Ooi, Kenta ;
Sonoda, Akinari .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2014, 53 (09) :3682-3688
[8]   Application of layered double hydroxides for removal of oxyanions: A review [J].
Goh, Kok-Hui ;
Lim, Teik-Thye ;
Dong, Zhili .
WATER RESEARCH, 2008, 42 (6-7) :1343-1368
[9]   Highly Efficient Separation of Magnesium and Lithium and High Utilization of Magnesium from Salt Lake Brine by a ReactionCoupled -CoupTechnology [J].
Guo, Xiaoyu ;
Hu, Shaofang ;
Wang, Chenxi ;
Duan, Haohong ;
Xiang, Xu .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2018, 57 (19) :6618-6626
[10]   Quantitative Effects of Desorption Intensity on Structural Stability and Readsorption Performance of Lithium/Aluminum Layered Double Hydroxides in Cyclic Li+ Extraction from Brines with Ultrahigh Mg/Li Ratio [J].
Hu, Fangping ;
Lin, Sen ;
Li, Ping ;
Yu, Jianguo .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2020, 59 (30) :13539-13548