47 research outputs found
Effect of acetate concentration, temperature, pH and nutrient concentration on polyhydroxyalkanoates (PHA) production by glycogen accumulating organisms
Intensification of Acidogenic Fermentation for the Production of Biohydrogen and Volatile Fatty AcidsâA Perspective
Utilising âwastesâ as âresourcesâ is key to a circular economy. While there are multiple routes to waste valorisation, anaerobic digestion (AD)âa biochemical means to breakdown organic wastes in the absence of oxygenâis favoured due to its capacity to handle a variety of feedstocks. Traditional AD focuses on the production of biogas and fertiliser as products; however, such low-value products combined with longer residence times and slow kinetics have paved the way to explore alternative product platforms. The intermediate steps in conventional ADâacidogenesis and acetogenesisâhave the capability to produce biohydrogen and volatile fatty acids (VFA) which are gaining increased attention due to the higher energy density (than biogas) and higher market value, respectively. This review hence focusses specifically on the production of biohydrogen and VFAs from organic wastes. With the revived interest in these products, a critical analysis of recent literature is needed to establish the current status. Therefore, intensification strategies in this area involving three main streams: substrate pre-treatment, digestion parameters and product recovery are discussed in detail based on literature reported in the last decade. The techno-economic aspects and future pointers are clearly highlighted to drive research forward in relevant areas
Fermentative volatile fatty acid production and recovery from grass using a novel combination of solids separation, pervaporation, and electrodialysis technologies
Production of volatile fatty acids by anaerobic digestion of biowastes: Techno-economic and life cycle assessments
Utilizing Grass for the Biological Production of Polyhydroxyalkanoates (PHAs) via Green Biorefining: Material and Energy Flows
New method using sedimentation and immunomagnetic separation for isolation and enumeration of cryptosporidium parvum oocysts and giardia lamblia cysts
Mesophilic fermentative hydrogen production from sewage biosolids
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