Optimal experimental conditions for hydrogen production using low voltage electrooxidation of organic wastewater feedstock

Cheng, Wei, Singh, Nirala, MacIa-Agullo, Juan Antonio, Stucky, Galen D., McFarland, Eric W. and Baltrusaitis, Jonas (2012) Optimal experimental conditions for hydrogen production using low voltage electrooxidation of organic wastewater feedstock. International Journal of Hydrogen Energy, 37 18: 13304-13313. doi:10.1016/j.ijhydene.2012.06.073


Author Cheng, Wei
Singh, Nirala
MacIa-Agullo, Juan Antonio
Stucky, Galen D.
McFarland, Eric W.
Baltrusaitis, Jonas
Title Optimal experimental conditions for hydrogen production using low voltage electrooxidation of organic wastewater feedstock
Journal name International Journal of Hydrogen Energy   Check publisher's open access policy
ISSN 0360-3199
1879-3487
Publication date 2012-01-01
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.ijhydene.2012.06.073
Open Access Status Not Open Access
Volume 37
Issue 18
Start page 13304
End page 13313
Total pages 10
Place of publication Camden, London, United Kingdom
Publisher Elsevier Ltd
Language eng
Subject 2105 Renewable Energy, Sustainability and the Environment
2103 Historical Studies
3104 Condensed Matter Physics
2102 Curatorial and Related Studies
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. Highlights: We determined optimal conditions for organic wastewater electrooxidation at 1 V. 3 mA/cm2 current density for glucose on Au electrode at 0.5 M and pH 13 obtained. Faradaic efficiency of H2 production was ∼70% for glucose on the Au electrode. These experiments are an alternative to the conventional water photoelectrolysis.
Keyword Electrooxidation
Hydrogen production
Organic wastewater
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 7 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Mon, 23 Jun 2014, 22:42:54 EST by System User on behalf of School of Chemical Engineering