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English
Conflict of Interest
In relation to this article, we declare that there is no conflict of interest.
Publication history
Received October 1, 2025
Revised December 4, 2025
Accepted December 28, 2025
Available online March 25, 2026
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Regeneration and Reusability of HDBM-TOPO for Lithium Recovery from Industrial Effl uent of a Battery Recycling

School of Chemical Engineering , Chonnam National University
dssong@jnu.ac.kr
Korean Journal of Chemical Engineering, March 2026, 43(4), 957-963(7)
https://doi.org/10.1007/s11814-025-00644-5

Abstract

 As the demand for lithium-ion batteries (LIBs) rises with the growth of electric vehicles and renewable energy technologies,

effi cient recycling methods for spent LIBs have become critical. Recovering lithium from the industrial effl uent of 

battery recycling not only addresses the increasing need for this essential material but also mitigates environmental risks 

and supports circular economic goals. This study evaluates the regenerative performance and reusability of the dibenzoylmethane-trioctylphosphine

oxide (HDBM-TOPO) extractant system for lithium recovery from waste LIBs. Optimal conditions

were established, including 1.8 mol/L H 2 SO 4 for stripping and a 10-minute stabilization time, to maintain extractant 

effi ciency. Regeneration using NaOH successfully restored performance, achieving lithium extraction effi ciency exceeding 

94% over fi ve regeneration cycles with high selectivity for Li/Na, under challenging conditions with high Na/Li ratios. 

The fi ndings confi rm the stability and effi ciency of the HDBM-TOPO system, off ering a sustainable solution for lithium 

recovery, contributing to resource conservation and environmental protection in the LIB recycling industry. 

The Korean Institute of Chemical Engineers. F5,119, Anam-ro, Seongbuk-gu, Seoul, Republic of Korea
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