AI Article Synopsis
- Spent lithium-ion batteries (LIBs) and benzene-containing polymers (BCPs) are significant pollutants, and their combined treatment through copyrolysis in a sealed reactor can recycle valuable materials while minimizing toxic emissions.
- The process enables high recovery efficiencies for lithium compounds (LiCoO, LiMnO, LiNiCoMnO) reaching up to 99.9%, using reactions between BCP-derived gases and lithium transition metal oxides.
- Additionally, the generated particles from thermal decomposition help catalyze the breakdown of harmful substances, contributing to a greener method for recycling spent LIBs and managing BCP waste.
Article Abstract
Spent lithium-ion batteries (LIBs) and benzene-containing polymers (BCPs) are two major pollutants that cause serious environmental burdens. Herein, spent LIBs and BCPs are copyrolyzed in a sealed reactor to generate LiCO, metals, and/or metal oxides without emitting toxic benzene-based gases. The use of a closed reactor allows the sufficient reduction reaction between the BCP-derived polycyclic aromatic hydrocarbon (PAH) gases and lithium transition metal oxides, achieving the Li recovery efficiencies of 98.3, 99.9, and 97.5% for LiCoO, LiMnO, and LiNiCoMnO, respectively. More importantly, the thermal decomposition of PAHs (, phenol and benzene) is further catalyzed by the generated Co, Ni, and MnO particles, which forms metal/carbon composites and thus prevent the emissions of toxic gases. Overall, the copyrolysis in a closed system paves a green way to synergistically recycle spent LIBs and handle waste BCPs.
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| http://dx.doi.org/10.1021/acs.est.2c09816 | DOI Listing |
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