Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 55, Issue 26, Pages 7218-7225Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.6b01632
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- Korea Institute of Geoscience and Mineral Resources (KIGAM) - Ministry of Oceans and Fisheries
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We demonstrated an efficient recovery of lithium ions (Li+) from seawater using a continuous flow column packed with an adsorbent, chitosan lithium manganese oxide (LMO). The effects of Li+ concentration, contact time, and recyclability were investigated. The adsorbent showed good removal efficiency of Li+ from seawater. The maximum adsorption capacity was calculated to be 54.65 mg/g. The adsorption process fit well with the Freundlich isotherm with a correlation coefficient of 0.9924. Kinetics studies showed that the adsorption process was consistent with the pseudo -second -order model. The recyclability was tested after extraction of Li+ from the adsorbent using sulfuric acid. The adsorption capacity decreased slightly after recycling the adsorbent three times. This may be due to the dissolution of selectivity of Li+ in seawater showed that the selectivity increas Mn2+ and deformation of the chitosan structure. A study of the ed in the order Li+ > Mg2+ > Na+.
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