Fractal-like kinetics of the solid-state anaerobic digestion

• Zhi-Wu Wang ^[1] ; Fuqing Xu ^[2] ; Karthik R. Manchala ^[1] ; Yewei Sun ^[1] ; Yebo Li ^[2]
  1. [1] Virginia Tech - Wake Forest University

     Virginia Tech - Wake Forest University

     Estados Unidos

     
  2. [2] Ohio State University

     Ohio State University

     City of Columbus, Estados Unidos

     
• Localización: Waste management, ISSN-e 0956-053X, Vol. 53, 2016, págs. 55-61
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Total solid content (TS) negatively impacts the methane production efficiency (MPE) of solid-state anaerobic digestion (SS-AD), to which the classic mass action-based kinetics failed to provide a unified explanation. This study revealed that SS-AD reactions actually follow the fractal-like kinetics in light of the surface reactions in crowded SS-AD environment packed with heterogeneous media. The fractal characteristics of the SS-AD kinetics were found increasingly pronounced as TS increased. This study represents the first attempt to resolve the dilemma in SS-AD kinetics with the application of fractal theory. Employing this new concept allows explaining the reduced MPE at high TS and offers an easy assessment of the fractal characteristics of the SS-AD media.