Abstract:
Anaerobic digestion (AD) systems
yield methane from wet sludge/biomass leaving
carbon-depleted wastewater known as centrate
in municipal wastewater treatment plants.
Centrate is an ideal feedstock for
nutrient/energy recovery because it is highly
concentrated and is thus low volume. High
nutrient levels are found in centrate in the form
of ammonium and phosphate ions. This current
study focused on the potential of using centrate
to recover nutrients and energy through an
algal-based system. A red-algal (Galdieria
sulphuraria) strain was used for this application
for the treatment of centrate from municipal
AD systems.
