Abstract
Li1.33Mn1.67O4 (LMO) was successfully synthesized by solid state reaction method at temperature variation of 500, 600, and 700 °C. As-prepared samples are immersed in 1 lt 0.5M HCL for 24 hours to create vacant site for lithium ion. Lithium extraction process is employed by soaking the adsorbent LMO in 1 lt of Lumpur Sidoarjo for 24 hrs. SEM images of adsorbent with variation of calcination temperature show irregular shape with particles size in the range of 15-52 μm. The calcination temperature effects on the size of the grain and crystallinity of adsorbent. LMO 700 sample has the highest capacity of lithium adsorption with capacity of 29.8 mg/g. It is attributed to the high crystalline of LMO 700 sample compared with other samples.
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