Study on optimization of actinide oxalate precipitation process in a vortex flow reactor. Issue 5 (24th March 2017)

• Record Type: Journal Article
• Authors: Kumar, K. Suresh; Tripathi, V. M.; Sreekumar, G.; Sugilal, G.
• Is Part Of: Separation science and technology. Volume 52:Issue 5(2017)
• Page Start: 930
• Page End: 935
• Publication Date: 2017-03-24
• Subjects: Vortex flow reactor -- actinide oxalate -- precipitation -- PUREX; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2016.1268627
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: Oxalate precipitation process is globally accepted and is the current choice for conversion of actinide nitrates to their oxides. A vortex flow reactor with magnetic stirrer is found to be a better option for a hassle-free operation of batch as well continuous actinide reconversion process. Utilization of magnetic stirrer as an alternate for the conventional mechanical stirrer eliminates corrosion-related issues as none of the metal parts are in contact with nitric acid as well as oxalic acid solution. Moreover, this alternative system ensures a maintenance-free process. Optimization of various process conditions in a vortex reactor was accomplished using cerium nitrate as a surrogate for actinide nitrate and the results obtained were compared with that of pitched blade mechanical stirrer. About 40 L of thorium nitrate solution was successfully precipitated by the optimized procedure in a vortex reactor.