DOI: 10.1016/j.watres.2018.04.022
Scopus记录号: 2-s2.0-85046349131
论文题名: Improved blackwater disinfection using potentiodynamic methods with oxidized boron-doped diamond electrodes
作者: Thostenson J.O. ; Mourouvin R. ; Hawkins B.T. ; Ngaboyamahina E. ; Sellgren K.L. ; Parker C.B. ; Deshusses M.A. ; Stoner B.R. ; Glass J.T.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 140 起始页码: 191
结束页码: 199
语种: 英语
英文关键词: Blackwater
; Boron-doped diamond
; Decentralized water treatment
; Electrochemical advanced oxidation processes (EAOP)
; Electrochemical disinfection
; Reactive oxygen species
Scopus关键词: Boron
; Carbon
; Catalysts
; Chemicals removal (water treatment)
; Chlorine compounds
; Cost effectiveness
; Electrochemical sensors
; Electrodes
; Electrolytic reduction
; Energy efficiency
; Oxidation
; Reaction intermediates
; Waste treatment
; Wastewater treatment
; Blackwater
; Boron doped diamond
; Electrochemical advanced oxidation process
; Electrochemical disinfection
; Reactive oxygen species
; Disinfection
; boron
; carbon
; diamond
; oxidizing agent
; boron
; diamond
; boron
; chloride
; diamond
; disinfection
; electrochemical method
; electrode
; electrokinesis
; energy efficiency
; reactive oxygen species
; redox conditions
; sanitation
; wastewater
; wastewater treatment
; adsorption
; Article
; catalyst
; disinfection
; electrochemistry
; electrolysis
; fouling control
; oxidation
; potentiometry
; priority journal
; reduction (chemistry)
; waste water management
; chemistry
; devices
; disinfection
; electrode
; oxidation reduction reaction
; procedures
; waste water
; water management
; Boron
; Carbon
; Diamond
; Disinfection
; Electrodes
; Electrolysis
; Oxidants
; Oxidation-Reduction
; Waste Water
; Water Purification
英文摘要: Electrochemical disinfection (ECD) has become an important blackwater disinfection technology. ECD is a promising solution for the 2 billion people without access to conventional sanitation practices and in areas deficient in basic utilities (e.g., sewers, electricity, waste treatment). Here, we report on the disinfection of blackwater using potential cycling compared to potentiostatic treatment methods in chloride-containing and chloride-free solutions of blackwater (i.e., untreated wastewater containing feces, urine, and flushwater from a toilet). Potentiodynamic treatment is demonstrated to improve disinfection energy efficiency of blackwater by 24% and 124% compared to static oxidation and reduction methods, respectively. The result is shown to be caused by electrochemical advanced oxidation processes (EAOP) and regeneration of sp2-surface-bonded carbon functional groups that serve the dual purpose of catalysts and adsorption sites of oxidant intermediates. Following 24 h electrolysis in blackwater, electrode fouling is shown to be minimized by the potential cycling method when compared to equivalent potentiostatic methods. The potential cycling current density is 40% higher than both the static oxidative and reductive methods. This work enhances the understanding of oxygen reduction catalysts using functionalized carbon materials and electrochemical disinfection anodes, both of which have the potential to bring a cost-effective, energy efficient, and practical solution to the problem of disinfecting blackwater. © 2018 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112701
Appears in Collections: 气候减缓与适应
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作者单位: Department of Electrical and Computer Engineering, Duke University, Durham, NC, United States; Center for WaSH-AID, Duke University, Durham, NC, United States; École Centrale de Lyon, Écully, France; Research Triangle Institute (RTI) International, Research Triangle ParkNC, United States; Department of Civil and Environmental Engineering, Duke University, Durham, NC, United States
Recommended Citation:
Thostenson J.O.,Mourouvin R.,Hawkins B.T.,et al. Improved blackwater disinfection using potentiodynamic methods with oxidized boron-doped diamond electrodes[J]. Water Research,2018-01-01,140