scholarly journals Valorization of Glucose-Based Wastewater Through Production of Hydrogen, Volatile Fatty Acids and Alcohols

10.5772/67101 ◽  
2017 ◽  
Author(s):  
Eduardo Lucena Cavalcante de Amorim ◽  
Leandro Takano Sader ◽  
Lucas Rodrigues Ramos ◽  
Edson Luiz Silva
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Production Of Hydrogen ◽  
Fatty Acids And Alcohols

Volatile Fatty acids and Alcohols Production during Anaerobic Storage of Dairy Manure

2011 ◽  
Vol 54 (2) ◽  
pp. 599-607 ◽  
Author(s):  
H. M. El-Mashad ◽  
R. Zhang ◽  
V. Arteaga ◽  
T. Rumsey ◽  
F. M. Mitloehner
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Dairy Manure ◽  
Anaerobic Storage ◽  
Fatty Acids And Alcohols

Production of hydrogen, ethanol and volatile fatty acids from the seaweed carbohydrate mannitol

2015 ◽  
Vol 193 ◽  
pp. 488-497 ◽  
Author(s):  
Ao Xia ◽  
Amita Jacob ◽  
Christiane Herrmann ◽  
Muhammad Rizwan Tabassum ◽  
Jerry D. Murphy
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Production Of Hydrogen

scholarly journals Acidogenesis of dairy wastewater at various pH levels

2002 ◽  
Vol 45 (10) ◽  
pp. 201-206 ◽  
Author(s):  
H.-Q. Yu ◽  
H.H.P. Fang
Keyword(s):  
Fatty Acids ◽  
Chemical Oxygen Demand ◽  
Volatile Fatty Acids ◽  
Biomass Yield ◽  
Oxygen Demand ◽  
Dairy Wastewater ◽  
Alcohol Production ◽  
Mixed Liquor ◽  
Influence Of Ph ◽  
Fatty Acids And Alcohols

Continuous experiments were conducted to study the influence of pH in the range 4.0–6.5 on the acidification of dairy wastewater at 37°C with 12 hours of hydraulic retention in an upflow reactor. Results showed that degradation of dairy pollutants increased with pH from pH 4.0 to 5.5. At pH 5.5, 95% of carbohydrate, 82% of protein and 41% of lipid were degraded. Based on chemical oxygen demand (COD), 48.4% of dairy pollutants were converted into volatile fatty acids and alcohols in the mixed liquor, 6.1% into hydrogen and methane in biogas, and the remaining 4.9% into biomass. The biomass yield at pH 5.5 was estimated as 0.32 mg-VSS/mg-COD. Further increase of pH, up to 6.5, increased degradation of carbohydrate, protein and lipid only slightly, but resulted in the lowering of overall acid and alcohol production due to their increased conversion into methane. Acetate, propionate, butyrate and ethanol are the main products of acidogenesis. Productions of propionate and ethanol were favored at pH 4.0−4.5, whereas productions of acetate and butyrate were favored at pH 6.0−6.5.

scholarly journals A Multiproduct Biorefinery Approach for the Production of Hydrogen, Methane and Volatile Fatty Acids from Agricultural Waste

2020 ◽  
Vol 11 (10) ◽  
pp. 5239-5246 ◽  
Author(s):  
Edoardo Righetti ◽  
Simone Nortilli ◽  
Francesco Fatone ◽  
Nicola Frison ◽  
David Bolzonella
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Agricultural Waste ◽  
Pilot Scale ◽  
Two Stage ◽  
Anaerobic Process ◽  
Real Environment ◽  
Production Of Hydrogen

Abstract A pilot scale biorefinery platform for the treatment of agro-waste and the production of hydrogen, methane and volatile fatty acids was studied in real environment. The system adopted was a two stage anaerobic process where hydrogen and volatile fatty acids were produced in the first phase (fermentation) and methane in the second one (digestion). The study demonstrated the possibility to produce a biogas composed by hydrogen and methane (10% and 55%, respectively) while recovering volatile fatty acids. The yield for acids production was equivalent to 0.13 gVFA/gTVS (as COD) with acetate and butyrate as dominant observed species. Graphic Abstract

Generation and Emissions of Volatile Fatty Acids and Alcohols during Anaerobic Storage of Dairy Manure

2010 ◽  
Author(s):  
Hamed M El-Mashad ◽  
Ruihong Zhang ◽  
Veronica Arteaga ◽  
Tom R Rumsey ◽  
Frank M Mitloehner
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Dairy Manure ◽  
Anaerobic Storage ◽  
Fatty Acids And Alcohols

Production of hydrogen, ethanol and volatile fatty acids through co-fermentation of macro- and micro-algae

2016 ◽  
Vol 205 ◽  
pp. 118-125 ◽  
Author(s):  
Ao Xia ◽  
Amita Jacob ◽  
Muhammad Rizwan Tabassum ◽  
Christiane Herrmann ◽  
Jerry D. Murphy
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Production Of Hydrogen

Generation and Utilization of Volatile Fatty Acids and Alcohols in Hydrothermally Altered Sediments in the Guaymas Basin, Gulf of California

2019 ◽  
Vol 46 (5) ◽  
pp. 2637-2646 ◽  
Author(s):  
Guang‐Chao Zhuang ◽  
Andrew Montgomery ◽  
Vladimir A. Samarkin ◽  
Min Song ◽  
Jiarui Liu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Gulf Of California ◽  
Volatile Fatty Acids ◽  
Guaymas Basin ◽  
Fatty Acids And Alcohols
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