Open AccessRelationship between calcination temperature and performance of supported Pd-catalyst
Author(s) -
Qiang Liu
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1549/3/032056
Subject(s) - calcination , catalysis , dissolution , chemistry , wastewater , metal ions in aqueous solution , metal , nuclear chemistry , chemical engineering , inorganic chemistry , materials science , environmental engineering , environmental science , organic chemistry , engineering
In the experiment, the COD removal rate of water samples was used as the evaluation index of catalyst activity, and the dissolution concentration of metal ions was used as the evaluation index of catalyst stability, and the activity and stability of the catalyst were comprehensively evaluated. The Pd-catalyst was used to treat simulated printing and dyeing waste-water by CWAO, and the influence of calcination temperature on the performance of the catalyst was investigated. The results showed that as the calcination temperature increases, the decolorization rate of the catalyst treatment waste-water decreases, and the metal stripping concentration of the waste-water decreases. The COD removal rate of the waste-water at the set 6 temperatures was 87.84 %, 85.43 %, 84.72 %, 77.59 %, 68.04 % and 66.94 %. The dissolved Cu and Fe concentrations of the waste-water at 90 minutes were 0.46 mg/L and 49.22 mg/L. Pd-catalyst has good catalytic activity and stability.