Chapter 4 - Simultaneous anaerobic fermentation biohydrogen and biomethane production from food waste

Abstract

In this chapter, simultaneous anaerobic fermentation biohydrogen and biomethane production are introduced, including the effect of adding alkaline wastewater, iron concentration, CaCO3 and NaCl addition, moisture content, and synergistic use of aged refuse and alkaline additive on biohydrogen production of food waste. Methane fermentation from biohydrogen fermentation residue, involving static and dynamic methane fermentation, is also described. A 10L biohydrogen production reactor is further designed, therein, the biohydrogen and methane production process, joint operation of combined biohydrogen production and methane production equipment, gas phase component and production, and pH and volatile solid (VS) variation are explored. Finally, the design and operation management of a biohydrogen and methane production treatment plant for food waste are introduced, including the sorting and oil recovery unit, pretreatment unit, discharge and dewatering unit, biogas purification unit, process equipment, and investment and cost estimates.