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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Xie, Tianhui Ren, Nanqi Lu, Lu Logan, Bruce E. Xing, Defeng |
| Description | Country affiliation: China Author Affiliation: Lu L ( State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, China.) |
| Abstract | Microorganisms can produce hydrogen gas (H(2)) at high rates by fermentation of carbohydrates, but not from proteins. However, it is possible to produce H(2) at high rates and yields from proteins by electrohydrogenesis in microbial electrolysis cells (MECs). Hydrogen gas was generated using bovine serum albumin (BSA, 700 mg/L) in a single-chamber MEC at a rate of Q=0.42+/-0.07 m(3)/m(3)/day and a yield of Y(H2) = 21.0 +/- 5.0 mmol-H2/g-COD, with an energy recovery (relative to electrical input) of eta(E)=75+/-12% (applied voltage of 0.6 V). Hydrogen production was substantially reduced using a complex protein (peptone) under the same conditions, to Q=0.05+/-0.01 m(3)/m(3)/day, YH2 = 2.6 +/- 0.1 mmol-H2/g-COD, and eta(E)=14+/-3%. There was good removal of organic matter for both substrates in terms of either protein (87+/-6 -97 +/-2%) or total COD (86+/-2 - 91+/-2%). Electron recycling likely occurred as Coulombic efficiencies exceeded 100% using BSA. The use of a two-chamber design, with either a CEM or AEM membrane, reduced the hydrogen production rate, but did not appreciably affect the hydrogen yield or energy efficiency. When an MEC was first acclimated to acetate, and then switched to BSA, performance was substantially reduced and was similar to that obtained using peptone. These results demonstrate that electrohydrogenesis can be used to produce H(2) from proteins, and it can also be used as a method for treatment of protein-containing wastewaters. |
| ISSN | 09565663 |
| Issue Number | 12 |
| Volume Number | 25 |
| e-ISSN | 18734235 |
| Journal | Biosensors and Bioelectronics |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2010-08-15 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Bioreactors Microbiology Hydrogen Metabolism Animals Cattle Electrochemical Techniques Electrolysis Electron Transport In Vitro Techniques Methane Biosynthesis Nitrogen Peptones Serum Albumin, Bovine Waste Disposal, Fluid Methods Journal Article Research Support, Non-u.s. Gov't Discipline Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology Medicine Biophysics Biomedical Engineering Biotechnology Electrochemistry |
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