【摘 要】
：
The direct urea fuel cell (DUFC) is a low cost and competitive approach for contemporane-ous urine or urea-contaminated wastewater treatment and electricity generation.However,the lack of efficient urea oxidation reaction (UOR) electrocatalysts and suitab
【机 构】
：
Key Laboratory of Drinking Water Science and Technology,Research Center for Eco-Environmental Scienc
论文部分内容阅读
The direct urea fuel cell (DUFC) is a low cost and competitive approach for contemporane-ous urine or urea-contaminated wastewater treatment and electricity generation.However,the lack of efficient urea oxidation reaction (UOR) electrocatalysts and suitable electron ac-ceptors remains a challenge for practical applications.Here,we developed a DUFC system using Ni2P@Ni foam as the anode and peroxymonosulfate (PMS) as the chemical oxidizers.The Ni2P@Ni foam anode showed a high oxidation activity for UOR with an onset poten-tial of 0.30 V vs.Ag/AgCl and Tafel slope of 34.4 mV/dec.PMS with high theoretical poten-tial improved the cell voltage to 1.43 V.A power density of DUFC up to 4.91 mW/cm2 was achieved using PMS at room temperature,which was approximately twice as high as using H2O2 (2.38 mW/cm2).NiⅡ/NiⅢ was the redox active species on the Ni2P anode in the DUFC process,and NiⅡ was electrochemically oxidized to NiⅢ,which reverted to NiⅡ by urea re-duction.When real human urine was used as the fuel,a power density of 4.46 mW/cm2 can be achieved at room temperature.This DUFC with high cell performance showed potential application in urea wastewater treatment.
其他文献
Effective cultivation of stable aerobic granular sludge(AGS)is a crucial step in the successful application of this technology,and the formation of AGS could be facilitated by some envi-ronmental stress conditions.Four identical sequencing batch reactors(
Carbon dioxide(CO2)emissions from aquatic ecosystems are important components of the global carbon cycle,yet the CO2 emissions from coastal reservoirs,especially in developing countries where urbanization and rapid land use change occur,are still poorly u
Decabrominated diphenyl ether(BDE-209)is generally utilized in multiple polymer materi-als as common brominated flame retardant.BDE-209 has been listed as persistent organic pollutants(POPs),which was considered to be reproductive toxin in the environment
Certain poly-and perfluoroalkyl substances(PFASs)exhibit significant bioaccumula-tion/biomagnification behaviors in ecosystems.PFASs,such as perfluorooctane sulfonate(PFOS),perfluorooctanoic acid(PFOA),perfluorohexanesulfonic acid(PFHxS)and related precur
The membrane fouling caused by extracellular organic matter (EOM) and algal cells and or-ganic matter removal of two typical cyanobacteria (M.aeruginosa and Pseudoanabaena sp.)during ultrafiltration (UF) process were studied in this work.The results showe
Coagulation and precipitation is a widely applied method to remove F-from wastewater.In this work,the effect of coagulation on the removal of F-and organic matter from coking wastewater was studied using AlCl3 and FeCl3 as compound coagulants.The removal
The bioaccumulation of PAHs and metal elements in the indigenous lichens Xanthoria pari-etina was monitored during two years at a quarterly frequency,in 3 sites of contrasted an-thropic influence.The impact of the meteorological factors(temperature,relati
The redox state of arsenic controls its toxicity and mobility in the subsurface environment.Understanding the redox reactions of arsenic is particularly important for addressing its en-vironmental behavior.Clay minerals are commonly found in soils and sed
Jiaxing created a precedent using bypass riparian marshes to purify micro-polluted wa-ter sources in China.Pond-wetland complex with constructed root channel technology be-comes a paradigm which can be analogized as “human-body wetland model” based on bio
Many problems in drinking water distribution systems (DWDSs) are caused by microbe,such as biofilm formation,biocorrosion and opportunistic pathogens growth.More iron release from corrosion scales may induce red water.Biofilm played great roles on the cor