Journal
SEPARATIONS
Volume 10, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/separations10040265
Keywords
P204; N235; collaborative extraction; removal rate
Categories
Ask authors/readers for more resources
This paper studies the key factors and mechanisms of extracting iron and manganese from the sulfuric acid leaching solution of waste ternary lithium-ion batteries by combining P204 and N235 extractors. The experimental results show that the optimal organic phase composition is 25% P204 + 15% N235 + 60% sulfonated kerosene, and the optimal pH of the pre-extraction solution is in the range of 3.0-3.5. Under the specified conditions, the removal rate of Mn and Fe exceeds 99%. The extraction effect of the P204-N235 composite extractant on Mn and Fe is better than that of P204 alone.
In this paper, the key factors and the mechanism of the extraction of iron and manganese from the sulfuric acid leaching solution of waste ternary lithium-ion batteries were studied by combining P204 and N235 extractors. The experimental results showed that the optimal organic phase composition was 25% P204 + 15% N235 + 60% sulfonated kerosene, and the optimal pH of the pre-extraction solution was in the range of 3.0-3.5. Under the conditions of an extraction temperature of 25-35 degrees C and an extraction ratio of O/A = 1/1 and after mixing for 5 min, the removal rate of Mn and Fe exceeded 99%. Under the same extraction conditions, the extraction effect of the P204-N235 composite extractant on Mn and Fe was better than that of P204 alone. logD-log[P204] showed that the formulas of the Mn and Fe extracts were MnR2(HR) and FeR2(HR), respectively. The logD-pH diagram showed that only one free H+ was released for each metal ion during extraction, and extraction occurred via a cation exchange reaction.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available