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使用固態法製備尖晶石型鋰錳氧化物(Li1.33Mn1.67O4)對鋰跟鈷的吸附性能

Adsorption Behavior of Lithium and Cobalt with Spinel Li1.33Mn1.67O4 Prepared by Solid-State Method

作者:呂權峰
畢業學校:大同大學
出版單位:大同大學
核准日期:2015-09-16
類型:Electronic Thesis or Dissertation
權限:Copyright information available at source archive--ttu....

英文摘要

Spinel Li1.33Mn1.67O4 material used as a lithium adsorbent was prepared with solid-state method using lithium carbonate and manganese carbonate as the reactants. Extraction of the Li+ from spinel Li1.33Mn1.67O4 powder was carried out with 0.3 M hydrochloric acid. After Li+ extraction, LMO converts to hydrogen manganese oxide (HMO). The compositions, crystal structures and morphologies of the prepared powders were investigated using XRD, SEM, TGA-DTA and BET.
The adsorption performance of spinel sorbent was evaluated by ICP-OES to detect the concentrations of Li and Co. Spinel LMO prepared at calcination temperature of 800oC has higher pure-phase than those prepared at lower calcination temperatures.
In this study, the operating conditions such as sorbent loading, initial concentration of Li+ and Co2+, initial pH value of solution and calcination temperature were investigated in batch system. The adsorption processes followed the pseudo-second-order kinetic model and Langmuir-isotherm model .


指導教授 - 王榮基

委員 - 呂理平

委員 - 陳泰祥


 

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