Oxidation Mechanism of Tetravalent Uranium in Nitric Acid System Synthesized by Hydrogen Reduction Process

Article Engineering, Environmental

A kinetic model for the autocatalytic behavior of nitric acid/formic acid mixtures to predict induction period

Mahoko Ando et al.

Summary: Prevention of runaway reactions is a crucial goal in process safety engineering, with a lack of knowledge about autocatalytic reactions hindering the design of safer processes. This study aimed to accurately predict the induction period of an autocatalytic reaction system involving nitric acid and formic acid. Results indicated that exothermic reactions began when the concentration of nitrous acid, identified as the autocatalyst, exceeded 4.6 mmol L-1.

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION (2021)

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Article Engineering, Environmental

Fabrication of g-C3N4-based conjugated copolymers for efficient photocatalytic reduction of U(VI)

Junyuan Gong et al.

Summary: The study improved the efficiency of photocatalytic reduction of hexavalent uranium using thiophene-doped conjugated polymers integrated into the graphitic carbon nitride skeleton. It was demonstrated that doping significantly enhances the photocatalytic reduction efficiency.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2021)

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Article Nuclear Science & Technology