浸出(土壤学)
化学
氨
烘烤
无机化学
碳酸铵
选择性浸出
铵
核化学
环境化学
有机化学
硫酸
环境科学
物理化学
土壤科学
土壤水分
作者
Fanyun Su,Xiangyang Zhou,Xiaojian Liu,Juan Yang,Jingjing Tang,Wan Yang,Zhenxiao Li,Hui Wang,Yaguang Zhang,Yayun Ma
出处
期刊:Chemosphere
[Elsevier]
日期:2023-01-01
卷期号:312: 137230-137230
被引量:2
标识
DOI:10.1016/j.chemosphere.2022.137230
摘要
Recycling valuable metals in spent LIBs is not only in line with the purpose of resource recycling but also an important measure for environmental protection. In this article, a process using biomass reduction roasting followed by a unique complexation-assisted ammonia leaching is proposed. Using waste areca powder (WAP) as a biomass reducing agent, the roasted residue is leached in an aqueous solution for the carbonate. The leaching efficiencies of Ni, Co, and Mn reach over 99% under ammonia leaching conditions of 1.5 M ammonium citrate (AC), 3 M ethylenediamine (EDA). The kinetics of ammonia leaching indicates the activation energies of Ni, Co, and Mn are 51.8 kJ mol-1, 47.7 kJ mol-1, and 40.8 kJ mol-1, respectively, which shows the whole duration is controlled by chemical reactions. Most importantly, this study systematically explores the mechanism of ammonia leaching and provided a useful recommendation for selecting the right ammonium salt.
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