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Title of article :
Optimal experimental conditions for hydrogen production using low voltage electrooxidation of organic wastewater feedstock
Author/Authors :
Cheng، نويسنده , , Wei and Singh، نويسنده , , Nirala and Maciل-Agullَ، نويسنده , , Juan Antonio and Stucky، نويسنده , , Galen D. and McFarland، نويسنده , , Eric W. and Baltrusaitis، نويسنده , , Jonas، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
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Abstract :
The dependence of electrooxidation on experimental conditions of organic molecules was investigated to optimize the production of hydrogen from potential wastewater sources using low voltage sources (∼1 V dc). Electrooxidation on platinum, gold, and stainless steel anodes with hydrogen production on the cathode was investigated using several different organic reductants, including: methanol, ethanol, glycerol, isopropanol, propanal, glycerol, glucose, sucrose, citric acid, and propionic acid. The electrolyte pH was varied from 2 to 12 in a 1 M Na2SO4 supporting solution. At 1 V, glycerol, citric acid, ethanol and methanol were found to yield the highest currents at low pH values (pH 2 and 7) on platinum electrode, glucose on gold electrode at pH 12 in 1 M Na2SO4 solution produced the highest total current density at 1 V with measured Faradaic efficiency for 1 M glucose of 70%. The hydrogen energy production efficiency was 86%. Practical limitations of glucose oxidation at optimum experimental conditions are discussed.
Keywords :
Hydrogen production , Electrooxidation , Organic wastewater
Journal title :
International Journal of Hydrogen Energy
Journal title :
International Journal of Hydrogen Energy
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