A Two-Stage Fermentation Process: Production of Propionate and Acetate Salt as Road Deicer from Cheese Whey

2008 ◽  
Vol 1 (1) ◽  
pp. 95-104 ◽  
Author(s):  
P. V. Vadlani ◽  
A. P. Mathews ◽  
G. S. Karr
Keyword(s):  
Fermentation Process ◽  
Cheese Whey ◽  
Two Stage ◽  
Acetate Salt ◽  
Road Deicer

Integration studies on a two-stage fermentation process for the production of biohydrogen

2010 ◽  
Vol 18 ◽  
pp. S72-S80 ◽  
Author(s):  
Domenico Foglia ◽  
Mattias Ljunggren ◽  
Walter Wukovits ◽  
Anton Friedl ◽  
Guido Zacchi ◽  
...  
Keyword(s):  
Fermentation Process ◽  
Two Stage

Two-stage fermentation process for bioenergy and biochemicals production from industrial and agricultural wastewater

2020 ◽  
pp. 249-308
Author(s):  
Sompong O-Thong ◽  
Chonticha Mamimin ◽  
Prawit Kongjan ◽  
Alissara Reungsang
Keyword(s):  
Fermentation Process ◽  
Two Stage ◽  
Agricultural Wastewater

Using cheese whey for hydrogen and methane generation in a two-stage continuous process with alternative pH controlling approaches

2009 ◽  
Vol 100 (15) ◽  
pp. 3713-3717 ◽  
Author(s):  
Nikolaos Venetsaneas ◽  
Georgia Antonopoulou ◽  
Katerina Stamatelatou ◽  
Michael Kornaros ◽  
Gerasimos Lyberatos
Keyword(s):  
Cheese Whey ◽  
Continuous Process ◽  
Two Stage ◽  
Methane Generation

Effect of Two-Stage Treatment on the Biological Treatability of Strong Industrial Wastes

1993 ◽  
Vol 28 (2) ◽  
pp. 145-154 ◽  
Author(s):  
F. Germirli ◽  
D. Orhon ◽  
N. Artan ◽  
E. Ubay ◽  
E. Görgün
Keyword(s):  
Biological Treatment ◽  
Cheese Whey ◽  
Anaerobic Treatment ◽  
Industrial Wastes ◽  
Second Phase ◽  
Acid Plant ◽  
Two Stage ◽  
Effluent Standards ◽  
Biological Treatability ◽  
Very High

Some agro-industries generate wastewaters with very high COD concentrations and require two-stage biological treatment Inert or residual organic constituents of these wastewaters, even at very low ratios, play a major role in the compliance of effluent standards. In this study, two strong wastes, citric acid plant effluent and cheese whey were tested for their inert COD content. The experiments showed that the first-phase anaerobic treatment provided a major decrease in the residual COD, but introduced significant amounts of particulate residual COD to the second phase. A newly developed procedure was used for the assessment of the soluble and particulate residual COD.

Enhanced bio-energy recovery in a two-stage hydrogen/methane fermentation process

2009 ◽  
Vol 59 (11) ◽  
pp. 2137-2143 ◽  
Author(s):  
M. J. Lee ◽  
J. H. Song ◽  
S. J. Hwang
Keyword(s):  
Hydrogen Production ◽  
Fermentation Process ◽  
Continuous Production ◽  
Strong Acid ◽  
Treatment Method ◽  
Engineering System ◽  
Production Rates ◽  
Two Stage ◽  
Methane Fermentation ◽  
Pre Treatment

A two-stage hydrogen/methane fermentation process has emerged as a feasible engineering system to recover bio-energy from wastewater. Hydrogen-producing bacteria (HPB) generate hydrogen from readily available carbohydrates, and organic acids produced during the hydrogen fermentation step can be degraded to generate methane in the following step. Three strong acids, HCl, H2SO4, and HNO3, were tested to determine the appropriate pre-treatment method for enhanced hydrogen production. The hydrogen production rates of 230, 290, and 20 L/kg-glucose/day was observed for the sludge treated with HCl, H2SO4, and HNO3, respectively, indicating that the acid pre-treatment using either HCl or H2SO4 resulted in a significant increase in hydrogen production. The fluorescent in situ hybridization method indicated that the acid pre-treatment selectively enriched HPB including Clostridium sp. of cluster I from inoculum sludge. After hydrogen fermentation was terminated, the sludge was introduced to a methane fermentation reactor. This experiment showed methane production rates of 100, 30, and 13 L/kg-glucose/day for the sludge pre-treated with HCl, H2SO4, and HNO3, respectively, implying that both sulfate and nitrate inhibited the activity of methane-producing bacteria. Consequently, the acid pre-treatment might be a feasible option to enhance biogas recovery in the two-stage fermentation process, and HCl was selected as the optimal strong acid for the enrichment of HPB and the continuous production of methane.

Production of fuel ethanol and methane from garbage by high-efficiency two-stage fermentation process

2009 ◽  
Vol 108 (6) ◽  
pp. 508-512 ◽  
Author(s):  
Yoji Koike ◽  
Ming-Zhe An ◽  
Yue-Qin Tang ◽  
Tomohiro Syo ◽  
Noriko Osaka ◽  
...  
Keyword(s):  
Fermentation Process ◽  
High Efficiency ◽  
Fuel Ethanol ◽  
Two Stage
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