International Journal of Waste Resources

Inclusion membranes for the facilitated extraction and recovery of Co (II) and Ni (II) ions form acid medium

15^th World Congress and Expo on Recycling

October 16-17, 2023 | Vancouver, Canada

Zakaria Habibi, S Majid, Y Chaouqi, M Hlaibi and K Touaj

Hassan II University of Casablanca, Morocco

Posters & Accepted Abstracts: Int J Waste Resour

Abstract:

The growth of the lithium-ion battery industry requires a secure supply of raw materials and proper management of end-of-life batteries. Functional recycling of lithium-ion batteries would meet both economic and environmental needs. It would ensure the continued availability of cobalt and nickel for industrial applications and allow waste reduction. The majority of heavy elements are toxic and harmful to living organisms, even at low concentrations. For this work, we prepared two Polymer Inclusion Membranes (PIMs), based on the polymer support Polyvinylidene difluoride (PVDF) and two extractive agents: Trioctylphosphine oxide (TOPO) and Trioctyl amin (TOA). These membranes were characterized and have adopted to achieve the oriented processes for the facilitated extraction and recovery of Co (II) ions. The obtained results were used to determine the values of different parameters: macroscopic permeability (P), initial flux (J0) and microscopic apparent diffusion coefficient (D*) and association constant (Kass) relating to the substrate movement through the membrane. The influence of several factors, initial substrate concentration, acidity and temperature (C0, pH, T) was studied. The results indicate that the various parameters (P, J, D* and Kass) vary greatly with the temperature of the medium and the performance of the used membrane increases with temperature factor. Similarly, these studies made it possible to determine the values of activation parameters, (Ea, ΔH≠ and ΔS≠) and to elucidate a mechanism by successive jumps of Co (II) ions on fixed sites of the immobilized extractive agent molecules in the membrane phase. Finally, we treated the filtrate of a type of Li-ion battery because we relied on the same membrane which showed good results in the first experiments. Keywords: Li-ion battery, Cobalt, Nickel, Polymer membrane with inclusion.