期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 299, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2021.113590
关键词
Pulsed discharge plasma; Ammonia nitrogen; Phenol; Modified zeolite catalyst
资金
- National Natural Science Foundation of China [51707093]
- Postgraduate Research AMP
- Practice Innovation Program of Jiangsu Province, China [2021-47]
In this study, the removal of ammonia nitrogen and phenol using pulsed discharge plasma and modified zeolite was investigated. Fe-zeolite showed better catalytic oxidation of phenol and adsorption of ammonia nitrogen in the PDP system. The removal efficiency of pollutants increased with higher discharge voltage and solution conductivity, but decreased with a longer discharge distance.
In this work, the removal of ammonia nitrogen and phenol by pulsed discharge plasma (PDP) and modified zeolite was investigated. The Fe-zeolite and Mn-zeolite catalysts were prepared by the impregnation method. Catalysts' morphology, specific surface area, and chemical bond structure were characterized. Based on the pollutants removal experiments, Fe-zeolite (0.01) in the PDP system had better catalytic oxidation of phenol and adsorption effect of ammonia nitrogen. The removal efficiency of the pollutants increased with the increase of discharge voltage and solution conductivity, but decreased with the increase of discharge distance. During the plasma discharge process, the pH value in the solution decreased, and the solution conductivity gradually increased. After PDP/Fe-zeolite system treatment, the toxicity of the wastewater was significantly reduced. This study provided a new treatment method for inorganic and organic pollutants treated by PDP.
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