METHOD FOR EXTRACTING MANGANESE IN SYSTEM OF RECOVERING LITHIUM IN SEA WATER AND MEHTOD FOR MANUFACTURING ADSORBENT FOR RECOVERING LITHIUM IN SEA WATER

摘要

The present invention relates to a method of extracting manganese in a process of collecting lithium in seawater and a method of manufacturing adsorbents for collecting lithium in seawater. The present invention provides the method of extracting manganese in the process of collecting lithium in seawater comprising: a step of adsorbing lithium in seawater using adsorbents consisting of manganese oxide; a step of obtaining a lithium desorption solution by desorbing lithium adsorbed on the absorbent with an acid solution; and a step of collecting manganese ions contained in the lithium desorption solution through reaction formula 1. [Equation 1] Mn2+ + Na2S2O8 + 2H2O -> MnO2 + 2Na+ + 2SO42- + 4H+. [Reference numerals] (AA) Seawater; (BB) Lithium absorption; (CC) Detachment; (DD) Desorption solution; (EE) Concentration; (FF) Hydrochloric acid collection; (GG) Mn collection; (HH) Collected manganese (recycle in absorbent manufacture)