Impact of metal nanoparticles on biogas production from poultry litter.
Bioresour Technol
; 275: 200-206, 2019 Mar.
Article
in En
| MEDLINE
| ID: mdl-30590206
ABSTRACT
The effects of metal nanoparticle (NP) addition during anaerobic digestion (AD) of poultry litter was tested using two sequential experiments Exp. A) four NPs (Fe, Ni, Co, and Fe3O4) at three concentrations; and Exp. B) NP combinations (Fe, Ni, and Co) at four concentrations. Scanning electronic microscopy (SEM) and elemental analysis were used to confirm NP inclusion after dispersion (before AD) and track nanoparticles post-AD, and new technique for NP extraction post-AD was developed. Before AD, NPs ranged from 30.0 to 80.9â¯nm for Fe, Ni, and Co, and 94.3 to 400â¯nm for Fe3O4. Methane production increased with NPs addition compared to poultry litter-only, with the highest increases observed with NPs concentrations (in mg/L) of 12 Ni (38.4% increase), 5.4 Co (29.7% increase), 100 Fe (29.1% increase), and 15 Fe3O4 (27.5% increase). Nanoparticle mixtures greatly decreased H2S production. The SEM post-AD detected Fe, Ni, and Fe3O4 at concentrations ≥100â¯mg/L.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Metal Nanoparticles
/
Biofuels
Limits:
Animals
Language:
En
Journal:
Bioresour Technol
Journal subject:
ENGENHARIA BIOMEDICA
Year:
2019
Document type:
Article
Affiliation country:
Egypt