摘要： The decolorization, mineralization and toxicity change of Rhodamine B (RB) in aqueous solution with contact glow discharge electrolysis (CGDE) were investigated. With Na2SO4 as the electrolyte, after 60 min CGDE treatment, the decolorization efficiency of 8.0 mg/L RB was 77.72% and the TOC removal was 5.12%. However, the inhibition rate increased from the initial 27.02% to 72.86%. With 0.3 mmol/L Fe2+ in presence of solution, the decolorization efficiency was close to 100% after 30 min treatment and 50.12% of TOC was removed. The inhibition rate decreased from 60.21% to 14.70%. With NaCl as electrolyte, after 30 min treatment, the decolorization efficiency was close to 100% and 48.09% of TOC
was removed. The inhibition rate abruptly decreased to 3.07%. The presence of Fe2+ or Cl- not only accelerated the decolorization and mineralization of RB, but also decreased the toxicity of the degradation solution, which provided fundamental data for the practical application.