The effect of volatile fatty acid additions on the anaerobic digestion of cellulose and glucose in batch reactors

2005 ◽  
Vol 40 (11) ◽  
pp. 3412-3418 ◽  
Author(s):  
Irene Siegert ◽  
Charles Banks
Keyword(s):  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Volatile Fatty Acid ◽  
Batch Reactors

A Techno-Economic case for Volatile Fatty Acid Production for Increased Sustainability in the Wastewater Treatment Industry

2021 ◽  
Author(s):  
Ganesh K Veluswamy ◽  
Andy Ball ◽  
Richard Dinsdale ◽  
Alan Guwy ◽  
Kalpit Shah
Keyword(s):  
Wastewater Treatment ◽  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Acid Production ◽  
Volatile Fatty Acid ◽  
Fugitive Emissions ◽  
Fatty Acid Production

Methane, the final product of methanogenesis during anaerobic digestion is a low value product (0.1$/m3). Concerns over fugitive emissions from methane coupled with recent reduction in costs of solar and...

scholarly journals Will Membranes Break Barriers on Volatile Fatty Acid Recovery from Anaerobic Digestion?

2020 ◽  
Author(s):  
Xiaobo Zhu ◽  
Aaron Leininger ◽  
David Jassby ◽  
Nicolas Tsesmetzis ◽  
Zhiyong Jason Ren
Keyword(s):  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Volatile Fatty Acid ◽  
Acid Recovery

A new strategy to recover from volatile fatty acid inhibition in anaerobic digestion by photosynthetic bacteria

2020 ◽  
Vol 311 ◽  
pp. 123501 ◽  
Author(s):  
Weixin Zhao ◽  
Jinhui Jeanne Huang ◽  
Binbin Hua ◽  
Zhiyong Huang ◽  
Ronald L. Droste ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Volatile Fatty Acid ◽  
Photosynthetic Bacteria ◽  
Acid Inhibition ◽  
New Strategy ◽  
Fatty Acid Inhibition

Overview of AD

2020 ◽  
Author(s):  
Jacob Joseph Lamb
Keyword(s):  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Mathematical Models ◽  
Volatile Fatty Acid ◽  
Biological Process ◽  
Gas Production ◽  
Anaerobic Digester ◽  
Chemical Parameters ◽  
Reactor Configuration ◽  
Biogas Output

There are many methodologies for improving the biogas output from anaerobic digestion. These techniques include physical (e.g., gas production and feedstock parameters), reactor configuration and chemical parameters (e.g., pH and volatile fatty acid concentrations) within the digester can help to link particular functions and features of the process. Using this expanse of data, mathematical models can be used to understand and forecast the biological process within an anaerobic digester. Such models can then be further developed on a process and biological level to improve their ability to mimic the function of the reactor. This chapter will provide background into modelling and reactor configuration in order to obtain a digital twin of an anaerobic digester.

Preparation of volatile fatty acid (VFA) calcium salts by anaerobic digestion of glucose

2015 ◽  
Vol 62 (4) ◽  
pp. 476-482 ◽  
Author(s):  
Xiaofen Li ◽  
Janis E. Swan ◽  
Giridhar R. Nair ◽  
Alan G. Langdon
Keyword(s):  
Fatty Acid ◽  
Anaerobic Digestion ◽  
Volatile Fatty Acid ◽  
Calcium Salts

Anaerobic acidification of a synthetic wastewater in batch reactors at 55°C

2002 ◽  
Vol 46 (11-12) ◽  
pp. 153-157 ◽  
Author(s):  
H.Q. Yu ◽  
H.H.P. Fang
Keyword(s):  
Fatty Acid ◽  
Substrate Concentration ◽  
Volatile Fatty Acid ◽  
Biomass Yield ◽  
Oxygen Demand ◽  
Dairy Wastewater ◽  
Synthetic Wastewater ◽  
Batch Reactors ◽  
Production Of Hydrogen ◽  
Anaerobic Acidification

Experiments were conducted to study the acidogenesis of a dairy wastewater in batch reactors at pH 5.5 and 55°C. There was a biased fermentation sequence for carbohydrate and protein, and the protein fermentation was delayed by carbohydrate. The production of hydrogen was exclusively from the fermentation of carbohydrate. Acetate and butyrate concentrations both increased rapidly at the beginning and peaked at some points, then declined in the reactors fed with 8 g-COD (chemical oxygen demand)/l, or higher concentrations. Butanol and propanol fractions increased with the substrate concentration. The metabolism shifted from the volatile fatty acid-producing pathways to the alcohol-producing pathways when the substrate concentration increased beyond 8 g-COD/l. The acidogenic biomass yield was in the range 0.19-0.25 mg-VSS/mg-COD.

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