Recovery of lithium from Urmia Lake by a nanostructure MnO 2 ion sieve

Synthesis, Characterization and Performance Evaluation of Lithium Manganese Oxide for Lithium Adsorption

“…As for adsorbents (5a), (5b), (7a) and (7b), the morphology is mostly cubic due to the complete formation of spinel as confirmed by the XRD patterns. These results agree with other reported work [11,22,36]. …”

Highly Selective and Pollution‐Free Electrochemical Extraction of Lithium by a Polyaniline/LixMn2O4 Cell

“…For the separation of Li from brines with high Mg/Li ratios, severalm ethods, such as ions ieve adsorption, solvent extrac-tion, and electrochemical separation, have been widely employed.A lthough several ion sieves such as manganese oxides and titanium oxides have ah igh selectivity for Li + extraction, [6][7][8] they are difficult to use in large-scale applications owing to their low adsorptionc apacity and efficiency. Similarly, solvente xtraction of Li + ions by using diketone, organophosphorus, or crown ethers as extractants offers ah igh separation efficiency of Li + ions from brines, [9][10][11] but the industrial application of these extractants is limited owing to their high cost.…”

Synthesis of H4Mn5O12 Nanotubes Lithium Ion Sieve and Its Adsorption Properties for Li+ from Aqueous Solution

“…It can be found from Figure 2(c) that the precursor of LiMO also presents nanotubes shape with some particles, which have maintained their morphology after annealing at 400°C.The shape and size of HMO lithium ion sieve ( Figure 2d) was the same as the precursor of LiMnO, further proving the prepared material had a stable structure, especially keep nanotube morphology with pore and rough 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 surface. Figure 2e Figure 3(c), which should correspond to (220) plane or the equivalent crystal planes from [1][2][3][4][5][6][7][8][9][10][11][12] direction. The lattice spacing of the tip can be scaled to 0.37 nm and 0.23 nm in Figure3 (d), which match (111) and (-1-11) or equivalent crystal planes, respectively, and these data are also consistent with the projection of HMO along [1][2][3][4][5][6][7]…”

“…Lithium and its compounds are widely used in many fields, especially in Li‐ion battery, electric vehicles and portable electronic device, which decides the surging requirement of lithium resources annually . Various techniques such as liquid‐liquid extraction, precipitation, ion exchange, membrane process, desalination and adsorption have been reported for separation and purification of lithium from mines and Salt Lake brines . Among these methods, adsorption is an ideal and the most promising method compared to other techniques due to the low concentration of lithium in local brines, convenience of operation, lower cost, efficient, recyclable and being a relatively more environment friendly process .…”

“…[1][2] Various techniques such as liquid-liquid extraction, precipitation, ion exchange, membrane process, desalination and adsorption have been reported for separation and purification of lithium from mines and Salt Lake brines. [3][4][5][6] Among these methods, adsorption is an ideal and the most promising method compared to other techniques due to the low concentration of lithium in local brines, convenience of operation, lower cost, efficient, recyclable and being a relatively more environment friendly process. [7] At present, spinel manganese oxides after acid elution (derived from LiMn 2 O 4 , Li 4 Mn 5 O 12 and Li 1.6 Mn 1.6 O 4 ) are promising lithium ion-sieves for extracting lithium from brine with extremely high chemical stability, low toxicity, high selectivity and capacity and low cost.…”