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Hydrogen and ethanol production in anaerobic fluidized bed reactors: Performance evaluation for three support materials under different operating conditions

Paper ID Volume ID Publish Year Pages File Format Full-Text
3583 176 2012 7 PDF Available
Title
Hydrogen and ethanol production in anaerobic fluidized bed reactors: Performance evaluation for three support materials under different operating conditions
Abstract

The objective of this study was to evaluate the influence of different support materials (polystyrene – R1, grounded tire – R2 and polyethylene terephthalate (PET) – R3) on producing hydrogen and ethanol using three anaerobic fluidized bed reactors. Each reactor had a total volume of 4192 cm3 and was fed with media containing glucose as the carbon source (4000 mg L−1) with an influent pH around 5.0 and an effluent pH of about 3.5, a hydraulic retention time (HRT) of 8–1 h at a temperature of 23 ± 2 °C, with thermal treatment of the inoculum. For hydrogen production, the best performance was achieved with R2 (2.11 mol H2 mol−1 glucose), providing the highest H2 content in biogas (60%). In all reactors, the predominant soluble metabolites were acetic acid, butyric acid, lactic acid and ethanol, with small amounts of propionic acid. The reactor R2 produced more acetic and butyric acid (434.74 and 1013.61 mg L−1, respectively). However, reactor R3 showed a better performance for ethanol concentration (1941.78 mg L−1).

► The biological production of hydrogen and ethanol was evaluated in AFBR. ► The AFBRs contained polystyrene (R1), grounded tire (R2), and PET (R3). ► The best performance was achieved with reactor R2 (2.11 mol H2 mol−1 glucose). ► The R3 showed a better performance for ethanol concentration (1941.78 mg L−1).

Keywords
Acid fermentation; Hydrogen production; Ethanol production; Anaerobic fluidized bed reactor; Support material
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Hydrogen and ethanol production in anaerobic fluidized bed reactors: Performance evaluation for three support materials under different operating conditions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 61, 15 February 2012, Pages 59–65
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us