A solution chemistry approach to the study of rare earth element precipitation by oxalic acid
作者： R. Chi , Z. Xu
DOI: 10.1007/S11663-999-0047-0
关键词:
摘要: A solution chemistry approach is developed to study oxalic acid efficiency (OAE) in recovering rare earth (RE) elements from the leachates of weathered clays. The optimal pH for precipitation (approximately 2) to obtain the highest RE recovery with the highest purity is identified experimentally and confirmed by solution chemistry calculations. Applying the solution chemistry approach to three case studies, the cause for a larger oxalic acid consumption than that calculated from stoichiometry of RE oxalate precipitation is identified …
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