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6CCVD Research

A novel gradient current density output mode for effective electrochemical oxidative degradation of dye wastewater by boron-doped diamond (BDD) anode

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2020-10-05
JournalWater Science & Technology
AuthorsTing Liu, Dongtian Miao, Guoshuai Liu, Qiuping Wei, Kechao Zhou
InstitutionsHarbin Institute of Technology, Central South University
Citations2

Abstract

Section titled ā€œAbstractā€

Abstract In order to solve the problems of high energy consumption and low current efficiency in electrochemical oxidation (EO) degradation under the traditional constant output process (COP), a gradient output process (GOP) of current density is proposed in this paper. That is, the current density is gradually reduced in a fixed degradation time, and the Reactive Blue 19 simulated dye wastewater was used as the degradation target. The general applicability of the process was further confirmed by studying the optimal gradient current density output parameters, the dye concentration, electrolyte concentration and other dye compounds with different molecular structures. The corresponding results show that the chemical oxygen demand (COD) removal (78%) and the color removal (100%) under the GOP are similar to those in the COP, and the overall energy consumption is reduced by about 50% compared with that in the traditional constant current mode. Moreover, the current efficiency in the middle and late stages of EO process has increased by 8.6 times compared with COP.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2009 - Parameters affecting the photocatalytic degradation of dyes using TiO2-based photocatalysts: a review
  2. 2013 - Electrochemical degradation of the reactive red 141 dye using a boron-doped diamond anode
  3. 2009 - Sonochemical degradation of chlorinated organic compounds, phenolic compounds and organic dyes - a review [Crossref]
  4. 1994 - Electrochemical oxidation of organic pollutants for wastewater treatment [Crossref]
  5. 2019 - Using p-Si/BDD anode for the electrochemical oxidation of norfloxacin [Crossref]
  6. 2019 - Electrochemical technologies for detecting and degrading benzoquinone using diamond films [Crossref]
  7. 2015 - Comparative use of anodic oxidation, electro-Fenton and photoelectro-Fenton with Pt or boron-doped diamond anode to decolorize and mineralize Malachite Green oxalate dye [Crossref]
  8. 2019 - Intensification of petroleum elimination in the presence of a surfactant using anodic electrochemical treatment with BDD anode [Crossref]
  9. 2009 - Degradation of anthraquinone dye CI reactive blue 19 in aqueous solution by ozonation [Crossref]
  10. 2008 - Performance of Gd-doped Ti-based Sb-SnO2 anodes for electrochemical destruction of phenol [Crossref]

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