potassium-bicarbonate and hydrazine

potassium-bicarbonate has been researched along with hydrazine* in 1 studies

Other Studies

1 other study(ies) available for potassium-bicarbonate and hydrazine

Article	Year
Reduction of Cr(VI) by hydrazine in solution saturated with KHCO3. Journal of hazardous materials, 2005, Aug-31, Volume: 123, Issue:1-3 Cr(VI) that exists in many industrial wastes is considered highly toxic. One of the most common ways to dispose of these wastes is to reduce Cr(VI) to Cr(III), which is less toxic and can be easily removed or fixed. Reduction of Cr(VI) by hydrazine in aqueous solutions saturated with potassium bicarbonate was studied in this paper. The content of Cr(VI), molar ratio of hydrazine to Cr(VI) and reaction temperature were 200-1000 ppm, 2:1-10:1 and 25-70 degrees C, respectively. Results showed that the overall reaction was third-order, i.e. first-order with respect to hydrazine and second-order with respect to Cr(VI). The apparent empirical activation energy was 75.6 kJmol(-1). The reaction kinetics could be interpreted by a three-step mechanism. Effect of the oxygen in the solution on the reduction of Cr(VI) was negligible. Topics: Bicarbonates; Chromium; Hydrazines; Industrial Waste; Kinetics; Oxidation-Reduction; Potassium Compounds; Solutions; Temperature; Water	2005

Article

Year

Reduction of Cr(VI) by hydrazine in solution saturated with KHCO3.

Journal of hazardous materials, 2005, Aug-31, Volume: 123, Issue:1-3

Cr(VI) that exists in many industrial wastes is considered highly toxic. One of the most common ways to dispose of these wastes is to reduce Cr(VI) to Cr(III), which is less toxic and can be easily removed or fixed. Reduction of Cr(VI) by hydrazine in aqueous solutions saturated with potassium bicarbonate was studied in this paper. The content of Cr(VI), molar ratio of hydrazine to Cr(VI) and reaction temperature were 200-1000 ppm, 2:1-10:1 and 25-70 degrees C, respectively. Results showed that the overall reaction was third-order, i.e. first-order with respect to hydrazine and second-order with respect to Cr(VI). The apparent empirical activation energy was 75.6 kJmol(-1). The reaction kinetics could be interpreted by a three-step mechanism. Effect of the oxygen in the solution on the reduction of Cr(VI) was negligible.

Topics: Bicarbonates; Chromium; Hydrazines; Industrial Waste; Kinetics; Oxidation-Reduction; Potassium Compounds; Solutions; Temperature; Water

2005