Highly enhanced electrocatalytic activity of nano-TiO2/Ti membrane electrode for phenol wastewater treatment

2020 ◽  
Vol 31 (16) ◽  
pp. 13511-13520
Author(s):  
Jiaxin Xu ◽  
Xiaoping Liang ◽  
Xiaowei Fan ◽  
Yuxi Song ◽  
Zenghua Zhao ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Electrocatalytic Activity ◽  
Membrane Electrode ◽  
Nano Tio2 ◽  
Phenol Wastewater

A fixed-bed electrochemical reactor with nano-TiO2 loading flat-sheet carbon membrane as anode for phenolic wastewater treatment

2018 ◽  
Vol 118 ◽  
pp. 113-119 ◽  
Author(s):  
Hongsen Hui ◽  
Hong Wang ◽  
Yinghui Mo ◽  
Zhen Yin ◽  
Jianxin Li ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Fixed Bed ◽  
Electrochemical Reactor ◽  
Carbon Membrane ◽  
Nano Tio2 ◽  
Flat Sheet ◽  
Phenolic Wastewater

scholarly journals Low-temperature electrocatalytic conversion of CO2 to liquid fuels: effect of the Cu particle size

2018 ◽  
Author(s):  
Antonio De Lucas-Consuegra ◽  
Juan Carlos Serrano-Ruiz ◽  
Nuria Gutierrez-Guerra ◽  
José Luis Valverde
Keyword(s):  
Particle Size ◽  
Low Temperature ◽  
Gas Phase ◽  
Electrocatalytic Activity ◽  
Water Electrolysis ◽  
Proton Exchange ◽  
Liquid Fuels ◽  
Main Reaction ◽  
Membrane Electrode ◽  
Reaction Products

A novel gas-phase electrocatalytic system based on a low-temperature proton exchange membrane (Sterion) was developed for the gas phase electrocatalytic conversion of CO2 to liquid fuels. This system achieved gas-phase electrocatalytic reduction of CO2 at low temperatures (below 90 ºC) over a Cu cathode by using water electrolysis-derived protons generated in-situ on an IrO2 anode. Three Cu-based cathodes with varying metal particle sizes were prepared by supporting this metal on an activated carbon at three loadings (50, 20, and 10 wt%; 50%Cu-AC, 20%Cu-AC, and 10%Cu-AC, respectively). The cathodes were characterized by N2 adsorption–desorption, temperature-programmed reduction (TPR), and X-ray diffraction (XRD) whereas their performance towards the electrocatalytic conversion of CO2 was subsequently studied. The membrane electrode assembly (MEA) containing the cathode with the largest Cu particle size (50%Cu-AC, 40 nm) showed the highest CO2 electrocatalytic activity per mole of Cu, with methyl formate being the main product. This higher electrocatalytic activity was attributed to the lower Cu–CO bonding strength over large Cu particles. Different product distributions were obtained over 20%Cu-AC and 10%Cu-AC, with acetaldehyde and methanol being the main reaction products, respectively. The CO2 consumption rate increased with the applied current and the reaction temperature.

Extracellular peroxidase production by Coprinus species from urea-treated soil

2004 ◽  
Vol 50 (1) ◽  
pp. 57-60 ◽  
Author(s):  
Keisuke Ikehata ◽  
Ian D Buchanan ◽  
Daniel W Smith
Keyword(s):  
Wastewater Treatment ◽  
Peroxidase Activity ◽  
Liquid Culture ◽  
Malt Extract ◽  
Urea Treatment ◽  
Treated Soil ◽  
Extracellular Peroxidase ◽  
Shake Flasks ◽  
Inky Cap ◽  
Phenol Wastewater

Thirteen strains of inky-cap mushroom Coprinus species were evaluated for the production of extracellular peroxidase. The liquid fermentation was carried out in shake flasks containing 1% glucose, 0.5% peptone, 0.3% yeast extract, and 0.3% malt extract broth at 25 °C. Peroxidase activity was detected in the liquid culture of several Coprinus species, including C. echinosporus NBRC 30630; C. macrocephalus NBRC 30117; Coprinus spp. UAMH 10065, UAMH 10066, UAMH 10067, and 074, after 10 days of growth. Peroxidase production by Coprinus sp. UAMH 10067, a Coprinus species isolated from urea-treated soil, was comparable to that of C. cinereus and reached 15 U·mL–1 after 10 days. In addition, the peroxidase from Coprinus sp. UAMH 10067 was apparently more thermally stable than the enzyme produced by C. cinereus.Key words: Coprinus species, urea treatment, phenol, wastewater treatment.

scholarly journals Low-Temperature Electrocatalytic Conversion of CO2 to Liquid Fuels: Effect of the Cu Particle Size

Catalysts ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 340 ◽  
Author(s):  
Antonio de Lucas-Consuegra ◽  
Juan Serrano-Ruiz ◽  
Nuria Gutiérrez-Guerra ◽  
José Valverde
Keyword(s):  
Particle Size ◽  
Low Temperature ◽  
Gas Phase ◽  
Electrocatalytic Activity ◽  
Water Electrolysis ◽  
Proton Exchange ◽  
Liquid Fuels ◽  
Main Reaction ◽  
Membrane Electrode ◽  
Reaction Products

A novel gas-phase electrocatalytic system based on a low-temperature proton exchange membrane (Sterion) was developed for the gas-phase electrocatalytic conversion of CO2 to liquid fuels. This system achieved gas-phase electrocatalytic reduction of CO2 at low temperatures (below 90 °C) over a Cu cathode by using water electrolysis-derived protons generated in-situ on an IrO2 anode. Three Cu-based cathodes with varying metal particle sizes were prepared by supporting this metal on an activated carbon at three loadings (50, 20, and 10 wt %; 50% Cu-AC, 20% Cu-AC, and 10% Cu-AC, respectively). The cathodes were characterized by N2 adsorption–desorption, temperature-programmed reduction (TPR), and X-ray diffraction (XRD) and their performance towards the electrocatalytic conversion of CO2 was subsequently studied. The membrane electrode assembly (MEA) containing the cathode with the largest Cu particle size (50% Cu-AC, 40 nm) showed the highest CO2 electrocatalytic activity per mole of Cu, with methyl formate being the main product. This higher electrocatalytic activity was attributed to the lower Cu–CO bonding strength over large Cu particles. Different product distributions were obtained over 20% Cu-AC and 10% Cu-AC, with acetaldehyde and methanol being the main reaction products, respectively. The CO2 consumption rate increased with the applied current and reaction temperature.

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