DOI: 10.1016/j.watres.2018.12.066
Scopus记录号: 2-s2.0-85060151716
论文题名: Efficient purification and chemical energy recovery from urine by using a denitrifying fuel cell
作者: Shen Z. ; Bai J. ; Zhang Y. ; Li J. ; Zhou T. ; Wang J. ; Xu Q. ; Zhou B.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 117
结束页码: 125
语种: 英语
英文关键词: Denitrifying fuel cell
; Electricity generating
; Self-bias system
; Urine purification
Scopus关键词: Ammonia
; Anodes
; Cathodes
; Denitrification
; Electric power generation
; Eutrophication
; Fuel cells
; Fuel purification
; Molecular biology
; Nitrogen
; Nitrogen removal
; Organic carbon
; Artificial urines
; Chlorine radicals
; Environment friendly
; Generate electricity
; Nitrogen pollution
; Removal efficiencies
; Self-bias
; Total Organic Carbon
; Body fluids
; amine
; ammonia
; carbon dioxide
; chlorine
; hydroxyl group
; nitrate
; nitrogen
; ammonia
; biomass
; denitrification
; electricity generation
; fuel cell
; organic carbon
; purification
; separation
; total organic carbon
; urine
; Article
; catalysis
; conductance
; current density
; cyclic potentiometry
; degradation
; denitrification
; denitrifying fuel cell
; dilution
; electric potential
; electricity
; electron spin resonance
; energy recovery
; energy yield
; illumination
; ion chromatography
; microbial fuel cell
; pH
; priority journal
; reaction analysis
; reaction time
; short circuit current
; solar energy
; total organic carbon
; urine
; urine sampling
英文摘要: Urine is a major biomass resource, and its excessive discharge would lead to severe aquatic nitrogen pollution and even eutrophication. In this study, we designed an innovative denitrifying fuel cell (DFC) under illumination to purify urine and convert its chemical energy into electricity. The central ideas include the following: 1) on the anode, chlorine radicals (Cl[rad]) and hydroxyl (HO[rad]) radicals were induced to react with amine or ammonia in urine into N 2 , and to mineralize organics into CO 2 , respectively; 2) on the cathode, NO 2 − or NO 3 − generated in the cell was selectively reduced to N 2 and tiny NH 4 + by Pd/Au/NF; 3) NH 4 + was further oxidized to N 2 by Cl[rad] according to process 1), then the total nitrogen (TN) was ultimately removed by a continuous redox loop between anode and cathode; 4) the separation and migration of charges were strengthened by a self-bias poly-Si/WO 3 photoanode. Result indicated that the DFC showed an efficient yield of electricity and almost completely N-removing properties: power density of 2.24 mW cm −2 , total nitrogen and total organic carbon (TOC) removal efficiency, respectively 99.02% and 50.76% for artificial urine; and power density of 2.51 mW cm −2 , TN and TOC removal efficiency, respectively 98.60% and 54.55% for actual urine. The study proposes a potential and environment-friendly approach by using novel DFC to purify urine and generate electricity. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122014
Appears in Collections: 气候变化事实与影响
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作者单位: School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; College of Environmental and Chemical Engineering, Shanghai University of Electric Power, No.2588 Changyang Road, Shanghai, 200090, China; Key Laboratory of Thin Film and Microfabrication Technology, Ministry of Education, Shanghai, 200240, China
Recommended Citation:
Shen Z.,Bai J.,Zhang Y.,et al. Efficient purification and chemical energy recovery from urine by using a denitrifying fuel cell[J]. Water Research,2019-01-01