DOI: 10.1016/j.watres.2018.01.003
Scopus记录号: 2-s2.0-85040253766
论文题名: Electricity production and phosphorous recovery as struvite from synthetic wastewater using magnesium-air fuel cell electrocoagulation
作者: Kim J.H. ; An B.M. ; Lim D.H. ; Park J.Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 132 起始页码: 200
结束页码: 210
语种: 英语
英文关键词: Electricity production
; Mg-air fuel cell electrocoagulation
; Phosphorous recovery
; Struvite
; Wastewater treatment
Scopus关键词: Coagulation
; Electric power generation
; Electrolytes
; Electrooxidation
; Fuel cells
; Molecular biology
; Recovery
; Sodium chloride
; Wastewater treatment
; Electricity production
; Electro coagulations
; Electrolyte mixtures
; Initial concentration
; Maximum power density
; Phosphorous recovery
; Struvites
; Synthetic waste water
; Magnesium compounds
; chloride
; magnesium
; phosphate
; phosphorus
; struvite
; magnesium
; phosphorus
; potassium derivative
; potassium dihydrogen phosphate
; sodium chloride
; struvite
; coagulation
; concentration (composition)
; dissolution
; dose-response relationship
; electricity generation
; electrolyte
; experimental study
; fuel cell
; magnesium
; oxidation
; phosphorus
; pollutant removal
; reaction rate
; struvite
; wastewater treatment
; Article
; concentration (parameters)
; current density
; dissolution
; electricity
; electrocoagulation
; priority journal
; waste water
; chemistry
; electricity
; electrochemical analysis
; isolation and purification
; procedures
; sewage
; waste water
; Electricity
; Electrochemical Techniques
; Magnesium
; Phosphates
; Phosphorus
; Potassium Compounds
; Sodium Chloride
; Struvite
; Waste Disposal, Fluid
; Waste Water
英文摘要: This research was based on the investigation of a major principle, regarding the effects of NaCl and KH2PO4 concentrations on struvite recovery, with electricity production using magnesium-air fuel cell electrocoagulation, in accordance with the concentration of phosphorous and chloride. The weight ratio of N:P in the synthetic wastewater was in the range of 1.2–21. The concentration of NH4Cl was fixed at 0.277 M (approximately 3888 ppm as NH3-N and 5000 ppm as NH4), while PO4-P was in the range of 0.006–0.1 M. In addition, the concentrations of NaCl as electrolyte were 0, 0.01, and 0.1 M. Phosphate removal increased linearly with the Mg:P ratio, up to approximately 1.1 mol mol−1, irrespective of the initial concentrations of phosphate and NaCl. The one-to-one reaction as mole ratio between phosphate and the dissolved Mg ions resulted in phosphate removal, with the production of a one-to-one magnesium/phosphate mineral, such as struvite. The average removal rate of phosphorous in experiments without a dose of NaCl was 4.19 mg P cm−2 h−1, which was lower than the relative values of 5.35 and 4.77 mg P cm−2 h−1, in experiments with 0.01 and 0.1 M NaCl. The dissolution rate of Mg with electro-oxidation determined the rate of phosphorous removal with struvite recovery. The average removal rates of phosphorous with dose concentrations of 0.006, 0.01 and 0.02 M KH2PO4 were 4.02, 5.54, 6.9 mg P cm−2 h−1, respectively, which increased with the increase in KH2PO4 dose. However, in experiments with a dose of 0.05 and 0.1 M KH2PO4 the average removal rates of phosphorous decreased to 4.84 and 2.51, respectively. The maximum power densities in the electrolyte mixture of 0.05 M KH2PO4/0.277 M NH4Cl, 0.01 M NaCl/0.05 M KH2PO4/0.277 M NH4Cl, and 0.1 NaCl/0.05 KH2PO4/0.277 M NH4Cl were 25.1, 26.4, and 33.2 W/m2, respectively. The increase in the NaCl dose concentration resulted in an increase in the maximum power density and current density. A dose above 0.05 M KH2PO4 resulted in the decrease of the maximum power densities. However, when the dose was below 0.05 M KH2PO4, the maximum power density increased with the increase in KH2PO4 dose. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112979
Appears in Collections: 气候减缓与适应
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作者单位: Department of Civil and Environmental Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, South Korea
Recommended Citation:
Kim J.H.,An B.M.,Lim D.H.,et al. Electricity production and phosphorous recovery as struvite from synthetic wastewater using magnesium-air fuel cell electrocoagulation[J]. Water Research,2018-01-01,132