The Decomposition of Oxalic Acid in Nitric Acid

Mason, C.; Brown, T. L.; Buchanan, D. A.; Maher, Chris J.; Morris, Darrell; Taylor, Raymond L.

doi:10.1007/s10953-016-0437-2

Cited by 9 publications

(5 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the first elution (10 mL of 1 mol·L −1 C 2 H 2 O 4 with 94(5)% of 88 Zr), the oxalic acid was decomposed by the addition of 15 mL of 15.5 mol·L −1 HNO 3 20 , 21 : …”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Production of zirconium-88 via proton irradiation of metallic yttrium and preparation of target for neutron transmission measurements at DICER

Matyskin

Stamatopoulos

O'Brien

et al. 2023

Sci Rep

View full text Add to dashboard Cite

A process for the production of tens to hundreds of GBq amounts of zirconium-88 (88Zr) using proton beams on yttrium was developed. For this purpose, yttrium metal targets (≈20 g) were irradiated in a ~16 to 34 MeV proton beam at a beam current of 100–200 µA at the Los Alamos Isotope Production Facility (IPF). The 88Zr radionuclide was produced and separated from the yttrium targets using hydroxamate resin with an elution yield of 94(5)% (1σ). Liquid DCl solution in D2O was selected as a suitable 88Zr sample matrix due to the high neutron transmission of deuterium compared to hydrogen and an even distribution of 88Zr in the sample matrix. The separated 88Zr was dissolved in DCl and 8 µL of the obtained solution was transferred to a tungsten sample can with a 1.2 mm diameter hole using a syringe and automated filling station inside a hot cell. Neutron transmission of the obtained 88Zr sample was measured at the Device for Indirect Capture Experiments on Radionuclides (DICER).

show abstract

“…For the first elution (10 mL of 1 mol·L −1 C 2 H 2 O 4 with 94(5)% of 88 Zr), the oxalic acid was decomposed by the addition of 15 mL of 15.5 mol·L −1 HNO 3 20 , 21 : …”

Section: Resultsmentioning

confidence: 99%

“…Almost all 88 Zr was eluted via the first 10 mL of 1 mol·L −1 C 2 H 2 O 4 and 15 mL of 15.5 mol·L −1 HNO 3 was added to this eluate to decompose oxalic acid according to the reaction 20 , 21 : …”

Section: Methodsmentioning

confidence: 99%

Production of zirconium-88 via proton irradiation of metallic yttrium and preparation of target for neutron transmission measurements at DICER

Matyskin

Stamatopoulos

O'Brien

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Some techniques, which may be particularly challenging to deploy on licensed nuclear sites and were therefore discarded, include electrolysis (Martinez-Huitle et al, 2004;Shih et al, 2019), ultrasonic degradation (Dükkanci and Gündüz, 2006) and catalytic wet air oxidation (Lee and Kim, 2000;Santos et al, 2021). Other methods from literature which were assessed to be more compatible with nuclear plant operations due to their ease of implementation, potentially using existing plant infrastructure, were identified to be heating with nitric acid (Mason et al, 2008) alongside manganous nitrate (Mn(NO 3 ) 2 ) (Kubota, 1982;Nash, 2012) and hydrogen peroxide (H 2 O 2 ) (Berry, 1957;Chung et al, 1995;Kim et al, 2000), and well as ultra-violet (UV) light (Beltrán et al, 2002) and ozonation (Ketusky and Subramanian, 2012;Martino et al, 2012). These techniques-thought to be more appropriate for use on nuclear power plants-have been experimented with, as outlined in this paper.…”

Section: Introductionmentioning

confidence: 99%

Methods for the destruction of oxalic acid decontamination effluents

Blenkinsop,

Rivonkar,

Robin

et al. 2024

Front. Nucl. Eng.

View full text Add to dashboard Cite

Oxalic acid is encountered within industrial processes, spanning from the nuclear sector to various chemical applications. The persistence and potential environmental risks associated with this compound underscore the need for effective management strategies. This article presents an overview of different approaches for the destruction of oxalic acid. The study explores an array of degradation methodologies and delves into the mechanistic insights of these techniques. Significant attention is channeled towards the nuclear industry, wherein oxalic acid arises as a byproduct of decontamination and waste management activities. An integral aspect of decommissioning efforts involves addressing this secondary waste-form of oxalic acid. This becomes imperative due to the potential release of oxalic acid into waste streams, where its accommodation is problematic, and its capacity to solubilize and transport heavy metals like Pu is a concern. To address this, a two-tiered classification is introduced: high concentration and low concentration scenarios. The study investigates various parameters, including the addition of nitric acid or hydrogen peroxide, in the presence of metallic ions, notably Mn2+ and Fe2+. These metallic ions are common components of effluents from metallic waste treatment. Additionally, the impact of UV light on degradation is explored. Investigations reveal that at high concentrations and with the influence of hydrogen peroxide, the presence of metallic cations accelerates the rate of destruction, demonstrating a direct correlation. This acceleration is further enhanced by exposure to UV light. At low concentrations, similar effects of metallic cations are observed upon heating the solution to 80°C. The rate of destruction increases proportionally with hydrogen peroxide concentration, with an optimal oxalic acid to hydrogen peroxide ratio of 1:100. Interestingly, a low-power UV light exerted no discernible effects on the destruction rate; heating alone proved sufficient. In essence, regardless of concentration, the degradation of oxalic acid with hydrogen peroxide experiences acceleration in the presence of metallic ions such as Mn2+ and Fe2+.

show abstract

“…6,7 At present, this method for oxalic acid in ltrates oxidized by KMnO 4 is normally used in nuclear fuel reprocessing plants. This method has the advantages of simple operation and short reaction time, but it results in continuous accumulation of K + and Mn 2+ compared to alternative methods, [6][7][8][9] and it does not comply with the principle of nuclear waste minimization. Therefore, alternative methods to replace this method are needed.…”

Section: Introductionmentioning

confidence: 99%

Catalytic reactions of oxalic acid degradation with Pt/SiO₂ as a catalyst in nitric acid solutions

Hao

Liu

et al. 2023

RSC Adv.

View full text Add to dashboard Cite

show abstract

The Decomposition of Oxalic Acid in Nitric Acid

Cited by 9 publications

References 9 publications

Production of zirconium-88 via proton irradiation of metallic yttrium and preparation of target for neutron transmission measurements at DICER

Production of zirconium-88 via proton irradiation of metallic yttrium and preparation of target for neutron transmission measurements at DICER

Methods for the destruction of oxalic acid decontamination effluents

Catalytic reactions of oxalic acid degradation with Pt/SiO₂ as a catalyst in nitric acid solutions

Contact Info

Product

Resources

About

The Decomposition of Oxalic Acid in Nitric Acid

Cited by 9 publications

References 9 publications

Production of zirconium-88 via proton irradiation of metallic yttrium and preparation of target for neutron transmission measurements at DICER

Production of zirconium-88 via proton irradiation of metallic yttrium and preparation of target for neutron transmission measurements at DICER

Methods for the destruction of oxalic acid decontamination effluents

Catalytic reactions of oxalic acid degradation with Pt/SiO2 as a catalyst in nitric acid solutions

Contact Info

Product

Resources

About

Catalytic reactions of oxalic acid degradation with Pt/SiO₂ as a catalyst in nitric acid solutions