An Alternative Solvent Cleanup Method Using a Hydrazine Oxalate Wash Reagent

Tallent, O.K.; Mailen, J.C.

doi:10.13182/nt82-a33051

Cited by 26 publications

(6 citation statements)

References 16 publications

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“…Some of the important techniques are (a) washing with Na 2 CO 3 (Naylor, 1967b), (b) washing with hydrazine or hydrazine carbonate (Goldacker et al, 1976a) or hydrazine oxalate (Tallent and Mailen, 1982), (c) washing with hydroxylamine salts, (d) washing with tetra methyl ammonium hydroxide, (e) washing with ammonium carbonate (Govindan et al, 2008b), (f) use of solid sorbents, and (g) vacuum distillation.…”

Section: Remedial Measuresmentioning

confidence: 99%

Reprocessing of spent fast reactor nuclear fuels

Natarajan

2015

Reprocessing and Recycling of Spent Nuclear Fuel

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Section: Remedial Measuresmentioning

confidence: 99%

Reprocessing of spent fast reactor nuclear fuels

Natarajan

2015

Reprocessing and Recycling of Spent Nuclear Fuel

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“…The MHOX concentration in aqueous samples can be determined by potentiometric titration [3]. A pH/mV/ • C Meter was used for the determination of pH value and the concentration of MHOX.…”

Section: Instrumentmentioning

confidence: 99%

“…Tallent et al demonstrated the use of hydrazine hydrate/ oxalate solutions [3]. Mailen et al studied the washing efficiency of extractant with hydroxylamine salts (tartrate, oxalate and citrate) [4].…”

Section: Introductionmentioning

confidence: 99%

The preparation and decomposition of methylhydrazine oxalate and its application as cleaning extractant

Yu¹,

Jingxin²,

Yu-xing³

2001

Radiochimica Acta

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The preparation, stability and decomposition of methylhydrazine oxalate (MHOX) were investigated. White needles of MHOX were prepared. The molecular formula of MHOX is (CH 3 N 2 H 4 ) 2 C 2 O 4 . The aqueous solution of MHOX is stable at ambient temperature.The kinetics of redox reaction between oxalic acid and H 2 O 2 used as an oxidant was studied. The kinetic rate equation is as followsThe kinetics of redox reaction between methylhydrazine and H 2 O 2 was also studied. The rate of decomposition of methylhydrazine is higher than that of oxalic acid. The decomposition reaction is given as follows:The proposed kinetic rate equation is as follows:The rate of decomposition of MHOX with H 2 O 2 depends mainly on that of oxalic acid.Experiments show that the washing efficiency of uranium from 30%TBP-kerosene (OK) used with MHOX is the same as that with Na 2 CO 3 . The washing efficiency of Pu and Am with MHOX is greater than that with Na 2 CO 3 .

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“…Hence separation and removal of DBP from the TBP is of great importance. Degradation products of TBP like DBP have been extensively studied, and several methods have been reported to remove them from the solvent for recycling TBP [6,7]. However, these methods have disadvantages like poor phase separation and generation of large volume of aqueous waste.…”

Section: Introductionmentioning

confidence: 99%