Journal of Bioprocessing & Biotechniques

Todd W French

Publications

• Research Article
  Microbial Lipid Accumulation Capability of Activated Sludge Feeding on Short Chain Fatty Acids as Carbon Sources through Fed-Batch Cultivation
  Author(s): Dhan Lord Fortela, Rafael Hernandez, Mark Zappi, Todd W French, Rakesh Bajpai, Andrei Chistoserdov, Emmanuel Revellame and William HolmesDhan Lord Fortela, Rafael Hernandez, Mark Zappi, Todd W French, Rakesh Bajpai, Andrei Chistoserdov, Emmanuel Revellame and William Holmes
  
  The potential of activated sludge microbial lipid technology as a sustainable energy platform has been recognized in the past years, but it has been challenged by the cost of carbon sources. This study hypothesized that Short Chain Fatty Acids (SCFAs) that can be derived from organic wastes can be alternative carbon sources. Therefore, this work evaluated the capability of activated sludge microbial consortia to accumulate microbial lipid by fed-batch feeding of SCFAs acetic acid, propionic acid, and butyric acid that were fed every 12 h period in 5 liter bioreactors. Activated sludge microbial consortia can accumulate microbial lipid by feeding on acetic acid. Acetic acid at 1.5 g/L loading per feeding enhanced the lipid content of activated sludge up to around 20% (w/w) dry biomass. This is comparable to that of oleaginous microorganisms. The feeding of .. Read More»
  DOI: 10.4172/2155-9821.1000275

  Abstract PDF