The kinetics, current efficiency, and power consumption of electrochemical dye decolorization by BD-NCD film electrode

Ervin Nurhayati*, Yaju Juang, Ch-Hpin Huang

*此作品的通信作者

研究成果: Conference contribution同行評審

3 引文 斯高帕斯(Scopus)

摘要

Diamond film electrode has been known as a material with very wide potential window for water electrolysis which leads to its applicability in numerous electrochemical processes. Its capability to produce hydroxyl radicals, a very strong oxidants, prompts its popular application in wastewater treatment. Batch and batch recirculation reactor were applied to perform bulk electrolysis experiments to investigate the kinetics of dye decolorization under different operation conditions, such as pH, active species, and current density. Furthermore, COD degradation data from batch recirculation reactor operation was used as the basis for the calculation of current efficiency and power consumption in the decolorization process. The kinetics of decolorization process using boron-doped nanocrystalline diamond (BD-NCD) film electrode revealed that acidic condition is favored for the dye degradation, and the presence of chloride ion in the solution was found to be more advantageous than sulfate active species, as evidenced by the higher reaction rate constants. Applying different current density of 10, 20 and 30?mA cm-2, it was found that the higher the current density the faster the decolorization rate. General current efficiency achieved after nearly total decolorization and ~80% COD removal in batch recirculation reactor was around 74%, with specific power consumption of 4.4 kWh m-3 (in terms of volume of solution treated) or 145 kWh kg-1(in terms of kg COD treated).

原文English
主出版物標題Green Process, Material, and Energy
主出版物子標題A Sustainable Solution for Climate Change - Proceedings of the 3rd International Conference on Engineering, Technology, and Industrial Application, ICETIA 2016
編輯Hari Prasetyo, Wisnu Setiawan, Fajar Suryawan, Munajat Tri Nugroho, Tri Widayatno, Nurul Hidayati, Eko Setiawan
發行者American Institute of Physics Inc.
ISBN(電子)9780735415294
DOIs
出版狀態Published - 15 6月 2017
事件3rd International Conference on Engineering, Technology, and Industrial Application - Green Process, Material, and Energy: A Sustainable Solution for Climate Change, ICETIA 2016 - Surakarta, Indonesia
持續時間: 7 12月 20168 12月 2016

出版系列

名字AIP Conference Proceedings
1855
ISSN(列印)0094-243X
ISSN(電子)1551-7616

Conference

Conference3rd International Conference on Engineering, Technology, and Industrial Application - Green Process, Material, and Energy: A Sustainable Solution for Climate Change, ICETIA 2016
國家/地區Indonesia
城市Surakarta
期間7/12/168/12/16

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