Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 794, Issue -, Pages 425-434Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.04.211
Keywords
Activated carbon; Manganese dioxide; Lithium recovery; Nanocomposites
Categories
Funding
- Technology Innovation Program (or Industrial Strategic Technology Development Program) [10080293]
- Ministry of Trade, Industry and Energy (MOTIE, Korea)
Ask authors/readers for more resources
Lithium (Li+) is considered as promising element in a variety of fields, including medicine, manufacturing, dyes, and the glass industry. Thus, the need for lithium has continued to escalate. Chemically modified activated carbon (CAC) supported with manganese dioxide (MnO2) nanoparticles was prepared using different manganese salt concentrations (0.1, 0.15, 0.12 and 0.2 M), a facile impregnation approach for enhancing the capacity of activated carbon for Li+ adsorption from aqueous media. The structural, morphological, physico-chemical and elemental properties were characterized by FE-SEM, EDAX, FE-TEM, FTIR, XRD, BET and ICP-OES. A batch experiment was performed to optimize the parameters (pH, adsorbent dose, and contact time) for Li+ adsorption. A kinetic study indicated that lithium sorption process followed a pseudo-second order reaction. Comparative analysis revealed that adsorption capacity of CAC increased with an increase in manganese loading, CAC-Mn0.1, CAC-Mn0.12, CAC-Mn0.15, and CAC-Mn0.2 with q(e) values of 50.1 mg/g, 65.04 mg/g, 69.93 mg/g and 88.5 mg/g respectively. A desorption study was performed to illustrate the benefits of sorbents by using HCl as an eluting agent. The competitive Li+ adsorption and reusability property during four adsorption/desorption cycle showed high selective Li+ adsorption with regeneration tendency, which enable the synthesized nanocomposites as potential candidature adsorbents for lithium recovery from aqueous solution. (C) 2019 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available