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Larestan University of Medical Sciences

Biohydrogen Production as Clean Fuel from physically Pretreated Mixed Culture

(2018) Biohydrogen Production as Clean Fuel from physically Pretreated Mixed Culture. Adv Biomed Res. p. 80. ISSN 2277-9175 (Print) 2277-9175 (Linking)

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Official URL: https://www.ncbi.nlm.nih.gov/pubmed/29930920

Abstract

Background: Due to depletion of fossil fuel reserves, global warming, and the need for energy efficiency, the new energy resource is required. For this purpose, hydrogen can be considered as clean and efficient energy carrier. In this study, biohydrogen production from physical pretreated mixed culture was investigated. Materials and Methods: In this study, the optimal conditions for physical pretreatment of mixed culture were investigated for the enrichment of hydrogen-producing bacteria (HPB). Three individual pretreatment processes, including thermal, ultraviolet (UV) radiation, and ultrasonication (US) were conducted in batch tests. The batch tests were carried out via 500 mL glass flasks with working volume 400 mL. Glucose was used as sole substrate, and other essential nutrient and trace elements were added. To agitation of substrate with HPB inoculum, the magnet stirrer was used at 60 rpm. Results: The results showed the production of H2 gas could be increased by appropriate pretreatment methods including thermal pretreatment at 100 degrees C. At 100 degrees C as a pretreatment, the volume of H2 gas was 112.25 mL and followed by US (97.46 mL), UV (89.11 mL), 80 degrees C (72.72 mL), 90 degrees C (53.95 mL), and 70 degrees C (26.01 mL). In the pretreatment methods, the solution pH and effluent soluble chemical oxygen demand was 6.3-6.7 and 5100-8300 mg/L, respectively. Conclusions: The Gompertz model depicts that all R(2) values were more than 0.93, indicating that the fitted curves were best fitted with the experimental points.

Item Type: Article
Keywords: Hydrogen-producing bacteria hydrogen thermal pretreatment ultrasonic ultraviolet radiation
Divisions: Education Vice-Chancellor Department > Faculty of Health > Department of Environmental Health Engineering
Page Range: p. 80
Journal or Publication Title: Adv Biomed Res
Journal Index: Pubmed
Volume: 7
Identification Number: https://doi.org/10.4103/2277-9175.233030
ISSN: 2277-9175 (Print) 2277-9175 (Linking)
Depositing User: خانم موهبت شیوخی
URI: http://eprints.larums.ac.ir/id/eprint/68

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