Green and efficient recovery of valuable metals from spent lithium-ion batteries using molasses: Parametric optimization and performance evaluation.

被引：13
作者：
Okonkwo, Emenike G. [1 ,2 ]
Wheatley, Greg [1 ]
Liu, Yang [1 ]
He, Yinghe [1 ,3 ]
机构：
[1] James Cook Univ, Coll Sci & Engn, Townsville, Qld 4811, Australia
[2] Univ Nigeria, Dept Met & Mat Engn, Nsukka, Nigeria
[3] Brunel Univ London, Dept Chem Engn, Uxbridge UB8 3PH, England
来源：
HYDROMETALLURGY | 2023年 / 222卷
关键词：
Sugarcane molasses; Lithium-ion batteries; Critical metal recovery; Leaching; Methanesulfonic acid; Recycling; ORGANIC-ACIDS; METHANESULFONIC-ACID; CATHODE MATERIALS; COBALT; SPECTROSCOPY; SUCROSE; GLUCOSE;
D O I：
10.1016/j.hydromet.2023.106168
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
In this study, a green and efficient leaching system utilizing methanesulfonic acid (MSA) and sugarcane molasses is investigated, and conditions optimized using response surface methodology (RSM). Results show that molasses is capable of reducing the oxidation state thus facilitating the leaching of the transition metals and lithium. The dissolution rate of the metals in molasses-methanesulfonic acid media is observed to be fast and temperature dependent. >98% of all the metals can be dissolved under the optimized leaching condition of 2 M MSA, reductant dosage of 0.408 g (molasses)/g (cathode material) on a wet molasses (18.5% moisture) and dry cathode material basis, solid-liquid ratio of 50 g/L, 90 C and 60 min. The proposed system provides an efficient waste-to-wealth approach that utilizes an agro-industrial by-product to recover hazardous metals present in spent LIBs.
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页数：10
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