CHINESE JOURNAL OF ENERGETIC MATERIALS
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Using BDD Electrode for Electrochemical Treatment of Nitrogen in Real Energetic Material Wastewater
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1.School of Materials and Chemistry,Southwest University of Science and Technology;2.College of Mathematics and Science, Southwest University of Science and Technology

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    Abstract:

    The pilot-scale energetic material wastewater is a kind of wastewater which is extremely difficult to degrade, containing high concentrations of various nitrogen-containing compounds, such as ammonia nitrogen (NH3-N), nitrite (NO2-), nitrate (NO3-), and other organic pollutants . To realize the efficient and directional removal of these nitrogen-containing compounds, boron-doped diamond (BDD) electrodes were prepared by the hot-filament chemical vapor deposition (HFCVD) method and utilized to degrade the wastewater. The effects of electrolyte composition and concentration, modified electrode type, and electrolysis device structure on the degradation efficiency were investigated. It demonstrated that adding 0.1 M sodium chloride (NaCl) electrolyte to energetic material wastewater could improve the selectivity of NH3-N direct conversion to nitrogen (N2). Using Cu/BDD and Ni/BDD cathodes accelerate the conversion process of high-valent nitrogen to NH3-N. Under the dual electrolysis cell structure system, employing Cu/BDD and Ni/BDD electrodes as anodes improve the degradation rate of NH3-N conversion to N2. Therefore, the approach utilizes metal-modified BDD electrodes as anodes, is expected to be a highly effective method in the rapid and selective degradation of energy material wastewater, especially when using 0.1 M NaCl as electrolyte.

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YOU Jia-jun, WANG Bing, XIONG Ying, et al. Using BDD Electrode for Electrochemical Treatment of Nitrogen in Real Energetic Material Wastewater[J]. Chinese Journal of Energetic Materials(Hanneng Cailiao),DOI:10.11943/CJEM2024092.

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History
  • Received:March 27,2024
  • Revised:June 14,2024
  • Adopted:May 31,2024
  • Online: June 04,2024
  • Published: