Bhaskar Joshi , Seniz Ucar , Hanna Katariina Knuutila , Hallvard Fjøsne Svendsen , Jens-Petter Andreassen , Sulalit Bandyopadhyay
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引用次数: 0
Abstract
Reactive crystallization of Li2CO3 in a semi-batch reactor using carbon dioxide (CO2) has been studied in the literature with an aim to enhance recovery of lithium from primary and secondary resources. However, an in-depth understanding of control variables that can enhance the yield of the recovery process is missing. Here, we discuss the fundamentals of Li2CO3 reactive crystallization from LiOH solution by carbon dioxide (CO2) injection to optimize lithium recovery. The significant factors affecting Li2CO3 crystallization, such as initial LiOH concentration, temperature, and CO2 flow rate, are investigated. The solid-liquid transitions and chord length distributions are monitored during Li2CO3 crystallization using in situ focused beam reflectance measurement (FBRM) and particle vision measurement (PVM) probes. Our results show that maximum lithium recovery corresponds to system pH maximum, influenced by the formation of soluble lithium bicarbonate. Furthermore, the work proposes an optimized CO2 injection strategy for maximizing lithium recovery in the form of Li2CO3 precipitates.
期刊介绍:
Sustainable Materials and Technologies (SM&T), an international, cross-disciplinary, fully open access journal published by Elsevier, focuses on original full-length research articles and reviews. It covers applied or fundamental science of nano-, micro-, meso-, and macro-scale aspects of materials and technologies for sustainable development. SM&T gives special attention to contributions that bridge the knowledge gap between materials and system designs.