Dissolution of Haematite in Mixtures Containing Different Chelating and Reducing Agents

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概要

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• <BR>Our earlier investigations have shown that the dissolution of moderately sintered haematite in a reductive-complexing formulation containing citric acid, EDTA and ascorbic acid (CEA) in the initial concentration ratio of 11:44:4 mol•m-3 (initial pH 2.8) is faster than at other concentration ratios. The dissolution was considered for a system having a surface area to volume ratio of 67m-1 with oxide thickness of 5μm, a system volume of -8.5m3 and no regeneration of chelant. In the present work different reducing agents in place of ascorbic acid and different chelating agents in place of EDTA have been studied, keeping the citric acid-complexing agent-reducing agent concentration ratio the same as above, to find out their relative effects on the dissolution process and to identify that formulation which gives the fastest dissolution. It is found that among the different formulations studied, CEA is the best for the dissolution of moderately sintered haematite particles.

• 社団法人 日本原子力学会の論文
• 1997-09-25

著者

• Moorthy P.

  Applied Chemistry Division Bhabha Atomic Research Center

• Venkateswaran G.

  Applied Chemistry Division Bhabha Atomic Research Center

• Venkateswaran G

  Applied Chemistry Division Bhabha Atomic Research Centre

• Joseph Santosh

  Applied Chemistry Division Bhabha Atomic Research Centre

• Moorthy P.N.

  Applied Chemistry Division, Bhabha Atomic Research Center

関連論文

• Use of Ammonium Hydrogen Fluoride Solution to Clean Mixed Oxide Deposit on Inconel Surface
• Dissolution Behaviour of Chromium Substituted Haematites in an Oxidative/Reductive-Complexing Agent Environment
• Dissolution of Haematite in Citric Acid-EDTA-Ascorbic Acid Mixtures
• Dissolution of Haematite in Mixtures Containing Different Chelating and Reducing Agents

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