Optimal experimental conditions for hydrogen production using low voltage electrooxidation of organic wastewater feedstock |
| |
| Authors: | Wei Cheng Nirala Singh Juan Antonio Maciá-Agulló Galen D Stucky Eric W McFarland Jonas Baltrusaitis |
| |
| Affiliation: | 1. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. Department of Chemical Engineering, University of California at Santa Barbara, Santa Barbara, CA 93106-5080, USA;3. Materials Department, University of California at Santa Barbara, Santa Barbara, CA 93106-5050, USA;4. Department of Chemistry & Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106-9510, USA;5. Instituto Nacional del Carbón (CSIC), P.O. Box 73, 33080 Oviedo, Spain;6. Departments of Chemistry and Chemical/Biochemical Engineering, 76 EMRB, 431 Newton Rd., University of Iowa, Iowa City, IA 52242, USA |
| |
| 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: | Organic wastewater Hydrogen production Electrooxidation |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
