Optimization of Key Factors Affecting Methane Production from Acidic Effluent Coming from the Sugarcane Juice Hydrogen Fermentation Process

Alissara Reungsang, Sakchai Pattra and Sureewan Sittijunda
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Alissara Reungsang: Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand
Sakchai Pattra: Community Public Health Program, Faculty of Arts and Science, Chaiyaphum Rajabhat University, Chaiyaphum 36000, Thailand
Sureewan Sittijunda: Department of Biotechnology, Faculty of Science, Burapha University, Chonburi 20131, Thailand

Energies, 2012, vol. 5, issue 11, 1-12

Abstract: Response surface methodology with a central composite design was applied to optimize the key factors affecting methane production from the acidic effluent coming from the sugarcane juice hydrogen fermentation process. The parameters studied were substrate concentration, ratio of NaHCO 3 to substrate concentration and initial pH. The experimental results showed that substrate concentration and initial pH had significant individual ( p MY ). However, there was no interactive effect between these variables ( p > 0.05). The maximum MY of 367 mL CH 4 /g-volatile solid (VS) added was obtained at the optimum conditions of 13,823 mg-COD/L, an NaHCO 3 to substrate concentration ratio of 3.09 and an initial pH of 7.07. Under the optimum conditions, MY was enhanced 4.4-fold in comparison to raw effluent.

Keywords: effluent; methane; response surface methodology (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2012
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (12)

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