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Cathodic Reduction of Cu2+ and Electric Power Generation Using a Microbial Fuel Cell
Zejie Wang,Bongsu Lim,Hui Lu,Juan Fan,최찬수 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.7
When Cu2+ was used as an electron acceptor, removal of Cu2+ was achieved from the synthesized wastewater (SW)in the cathode compartment of a microbial fuel cell (MFC). By addition of KNO3, the different initial pH of the SW showed no effect on the removal efficiency of Cu2+. For Cu2+ concentration of 50 mg/L the removal efficiencies were found to be 99.82%, 99.95%, 99.58%, and 99.97% for the KNO3 concentrations of 0, 50, 100 and 200 mM, and to be 99.4%, 99.9%, 99.7%, and 99.7% for pH values of 2, 3, 4, and 5, respectively. More than 99% Cu2+ was removed for the Cu2+ concentrations of 10, 50, and 100 mg/L, while only 60.1% of Cu2+ was removed for the initial concentration of 200 mg/L (pH 3). The maximum power density was affected by both KNO3 concentration and initial concentration of Cu2+. It was increased by a factor of 1.5 (from 96.2 to 143.6 mW/m2) when the KNO3 concentration was increased from 0 to 200 mM (50 mg/L Cu2+), and by a factor of 2.7 (from 118 to 319 mW/m2) when Cu2+concentration was increased from 10 to 200 mg/L (pH 3).
Cathodic Reduction of Cu<sup>2+</sup> and Electric Power Generation Using a Microbial Fuel Cell
Wang, Zejie,Lim, Bong-Su,Lu, Hui,Fan, Juan,Choi, Chan-Soo Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.7
When $Cu^{2+}$ was used as an electron acceptor, removal of $Cu^{2+}$ was achieved from the synthesized wastewater (SW) in the cathode compartment of a microbial fuel cell (MFC). By addition of $KNO_3$, the different initial pH of the SW showed no effect on the removal efficiency of $Cu^{2+}$. For $Cu^{2+}$ concentration of 50 mg/L the removal efficiencies were found to be 99.82%, 99.95%, 99.58%, and 99.97% for the $KNO_3$ concentrations of 0, 50, 100 and 200 mM, and to be 99.4%, 99.9%, 99.7%, and 99.7% for pH values of 2, 3, 4, and 5, respectively. More than 99% $Cu^{2+}$ was removed for the $Cu^{2+}$ concentrations of 10, 50, and 100 mg/L, while only 60.1% of $Cu^{2+}$ was removed for the initial concentration of 200 mg/L (pH 3). The maximum power density was affected by both $KNO_3$ concentration and initial concentration of $Cu^{2+}$. It was increased by a factor of 1.5 (from 96.2 to 143.6 mW/$m^2$) when the $KNO_3$ concentration was increased from 0 to 200 mM (50 mg/L $Cu^{2+}$), and by a factor of 2.7 (from 118 to 319 mW/$m^2$) when $Cu^{2+}$ concentration was increased from 10 to 200 mg/L (pH 3).
Current Chinese Environmental Situation
Wang, Zejie,Lim, Bongsu,Choi, Chansoo 대전대학교 환경문제연구소 2008 환경문제연구소 논문집 Vol.12 No.-
Since the country was reformed and opened recently rapid economic development has attracted a lot of capital, technology and human resources the country,leading to a rapid pace of urbanization and population increase. The economic development and population increase also faced a tremendous urban environment all pressure. The quality decrease of the urban environment, especially that of the surface water has affected the normal life of residents. In this report we introduced the current Chinese situation of China’s environment.
Current Chinese Environmental Situation
Wang,Zejie,Lim,Bongsu,Choi,Chansoo 대전대학교 환경문제연구소 2008 환경문제연구소 논문집 Vol.12 No.-
Since the country was reformed and opened recently rapid economic development has attracted a lot of capital, technology and human resources the country,leading to a rapid pace of urbanization and population increase. The economic development and population increase also faced a tremendous urban environment all pressure. The quality decrease of the urban environment, especially that of the surface water has affected the normal life of residents. In this report we introduced the current Chinese situation of China’s environment.
Md Akhte Khirul,Zejie Wang,Bongsu Lim 대한환경공학회 2020 Environmental Engineering Research Vol.25 No.2
Sediment microbial fuel cells (SMFCs) illustrated great potential for powering environmental sensors and bioremediation of sediments. In the present study, array anodes for SMFCs were fabricated with graphite rods as anode material and stainless steel plate as electric current collector to make it inconvenient to in situ settle down and not feasible for large-scale application. The results demonstrated that maximum power of 89.4 μW was obtained from three graphite rods, twice of 43.3 μW for two graphite rods. Electrochemical impedance spectroscopy revealed that three graphite rods resulted in anodic resistance of 61.2 Ω, relative to 76.0 Ω of two graphite rods. It was probably caused by the parallel connection of the graphite rods, as well as more biomass which could reduce the charge transfer resistance of the biofilm anode. The presently designed array configuration possesses the advantages of easy to enlarge the surface area, decrease in anodic resistance because of the parallel connection of each graphite rod, and convenience to berry into sediment by gravity. Therefore, the as prepared array node would be an effective method to fabricate large-scale SMFC and make it easy to in situ applicate in natural sediments.