Recovery of Lithium, Nickel, Cobalt, and Manganese from Spent Lithium-Ion Batteries Using L-Tartaric Acid as a Leachant
Recovery of Lithium, Nickel, Cobalt, and Manganese from Spent Lithium-Ion Batteries Using L-Tartaric Acid as a Leachant
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DOI：
10.1021/acssuschemeng.6b02056
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发表时间：
2017-01-01
影响因子：
8.4
通讯作者：
Yu, Jian-Guo
中科院分区：
文献类型：
--
作者：
He, Li-Po;Sun, Shu-Ying;Yu, Jian-Guo
本文报道了一种新的绿色工艺，包括天然L-酒石酸浸出，开发用于可持续地从废旧锂离子电池（LIB）中回收Mn、Li、Co和Ni。考察了L-酒石酸（C4 H6 O 6）和过氧化氢（H2 O2）浓度、矿浆浓度、温度和浸出时间对锰、锂、钴和镍浸出率的影响。在优化条件下（4vol%H2O2，2 M L-酒石酸，17 g/L矿浆浓度，70 ℃，30 min），锰、锂、钴和镍的浸出率分别为99.31%、99.07%、98.64%和99.31%。从L-酒石酸的结构出发，初步探讨了其浸出机理。Mn、Li、Co、Ni的浸出动力学数据最符合化学控制的收缩核模型。第一阶段Mn、Li、Co和Ni的浸出活化能分别为66.00、54.03、58.18和73.28 kJ/mol。在第二阶段，Mn、Li、Co和Ni的浸出E（a）s分别为55.68、53.86、58.94和47.78 kJ/mol。提出的湿法冶金工艺被认为是简单，高效，环保。
Herein is reported a novel green process involving natural L-tartaric acid leaching, developed for the sustainable recovery of Mn, Li, Co, and Ni from spent lithium-ion batteries (LIBs). Operating conditions affecting the leaching efficiencies of Mn, Li, Co, and Ni, including the concentrations of L-tartaric acid (C4H6O6) and hydrogen peroxide (H2O2), pulp density, temperature, and leaching time, were investigated. The leaching efficiencies were 99.31% for Mn, 99.07% for Li, 98.64% for Co, and 99.31% for Ni under the optimized conditions (4 vol% H2O2, 2 M L-tartaric acid, 17 g/L pulp density, 70 degrees C, and 30 min). The leaching mechanism was studied preliminarily based on the structure of L-tartaric acid. The kinetics data for the leaching of Mn, Li, Co, and Ni fit best to the shrinking-core model of chemical control. For the first stage, the activation energies (E(a)s) for the leaching of Mn, Li, Co, and Ni were 66.00, 54.03, 58.18, and 73.28 kJ/mol, respectively. For the second stage, the E(a)s for the leaching of Mn, Li, Co, and Ni were 55.68, 53.86, 58.94, and 47.78 kJ/mol, respectively. The proposed hydrometallurgical process was found to be simple, efficient, and environmentally friendly.