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Volume 39 Issue 1
Apr.  2021
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YUN Yu-pan, LIANG Zhao, ZHU Zhen-ya, WAN Jing-min, WU Li-yang, WEN Xue-you. CATALYTIC DENITRIFICATION PERFORMANCE OF SYGERGISTIC EFFECT OF Pd-Cu/GRAPHENE AND ZERO-VALENT IRON (Fe0)[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(1): 70-74,165. doi: 10.13205/j.hjgc.202101010
Citation: YUN Yu-pan, LIANG Zhao, ZHU Zhen-ya, WAN Jing-min, WU Li-yang, WEN Xue-you. CATALYTIC DENITRIFICATION PERFORMANCE OF SYGERGISTIC EFFECT OF Pd-Cu/GRAPHENE AND ZERO-VALENT IRON (Fe0)[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(1): 70-74,165. doi: 10.13205/j.hjgc.202101010

CATALYTIC DENITRIFICATION PERFORMANCE OF SYGERGISTIC EFFECT OF Pd-Cu/GRAPHENE AND ZERO-VALENT IRON (Fe0)

doi: 10.13205/j.hjgc.202101010
  • Received Date: 2019-09-10
    Available Online: 2021-04-23
  • In order to solve the problem of high nitrate content in secondary effluent of municipal wastewater treatment plants, the sygergistic effect of Pd-Cu/graphene and zero-valent iron (Fe0) on nitrate removal was investigated. The research on condition optimization of catalytic denitrification was conducted. Results showed that good catalytic performance was obtained under the following conditions:Fe0 4 g/L, Pd:Cu 3:1, pH 4.2, Pd-Cu/graphene 4 g/L, and reaction time 2 h, with the 78% of nitrate removal rate and 74% of N2 conversion rate. In catalytic denitrification process, Fe0, as the electron donor, mainly contributed to triggering the catalytic reaction, which occurred in the activated sites (Pd and Cu). The nitrate could be removed and converted to N2 through deoxidization reaction under the effect of the catalyst. Additionally, the carrier and the mass transfer process were also the important factors that may greatly influence the catalytic performance.
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