RT journal article
T1 Impact of Nanoparticle Addition and Ozone Pre-Treatment on Mesophilic Methanogenesis in Temperature-Phased Anaerobic Digestion
A1 Díaz Domínguez, Encarnación
A1 Ibáñez López, María Eugenia
A1 Makinia, Jacek
A1 Fernandez-Morales, Francisco Jesus
A1 García Morales, José Luis
A2 Tecnologías del Medio Ambiente
K1 BMP
K1 mesophilic
K1 ozonation
K1 TPAD
K1 zero-valent iron
AB Biodegradable organic waste offers significant opportunities for resource recovery withinthe frame of the circular economy. In this work, the effects of carbon-encapsulated iron nanoparticlesand ozone pre-treatments in the mesophilic methanogenic stage of a temperature-phased an-aerobicdigestion have been studied using biochemical methanogenic potential (BMP) tests and modelingsimulation. To do that, digestates from a pre-treated thermophilic acidogenic reactor that co-digestedsludge and wine vinasse were used. The addition of nanoparticles favored the removal of particulatematter, which increased by 9% and 6% in terms of total solids and volatile solids, respectively. Whencombined with ozone pre-treatment, these increases were 27% and 24%, respectively, demonstratingenhanced AD efficiency. The dose of iron nanoparticles encapsulated in carbon did not result ina statistically significant increase in methane production when sludge and vinasse were used asfeedstock. The combination of nanoparticles with the ozone pre-treatment significantly improvedthe methanogenic phase of the second stage, increasing the methane production yield by 22% andreducing the lag phase from 10 days to 3 days, according to the modified Gompertz model.
PB Multidisciplinary Digital Publishing Institute (MDPI)
SN 2076-3417
YR 2024
FD 2024
LK http://hdl.handle.net/10498/35650
UL http://hdl.handle.net/10498/35650
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026