We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Industrial Two-Phase Olive Pomace Slurry-Derived Hydrochar Fuel for Energy Applications.
- Authors
Karim, Adnan Asad; Martínez-Cartas, Mᵃ Lourdes; Cuevas-Aranda, Manuel
- Abstract
The present study aims to resolve the existing research gaps on olive pomace (OP) hydrochars application as a fuel by evaluating its molecular structures (FTIR and solid NMR analysis), identifying influential characteristics (Pearson correlation analysis), process optimization (response surface methodology), slagging–fouling risks (empirical indices), and combustion performance (TG-DSC analysis). The response surfaces plot for hydrothermal carbonization (HTC) of OP slurry performed in a pressure reactor under varied temperatures (180–250 °C) and residence times (2–30 min) revealed 250 °C for 30 min to be optimal conditions for producing hydrochar fuel with a higher heating value (32.20 MJ·Kg−1) and energy densification ratio (1.40). However, in terms of process efficiency and cost-effectiveness, the optimal HTC conditions for producing the hydrochar with the highest energy yield of 87.9% were 202.7 °C and 2.0 min. The molecular structure of hydrochar was mainly comprised of aromatic rings with methyl groups, alpha-C atoms of esters, and ether bond linkages of lignin fractions. The slagging and fouling risks of hydrochars were comparatively lower than those of raw OP, as indicated by low slagging and fouling indices. The Pearson correlation analysis emphasized that the enrichment of acid-insoluble lignin and extractive contents, carbon densification, and reduced ash content were the main pivotal factors for hydrochar to exhibit better biofuel characteristics for energy applications.
- Subjects
SLURRY; PEARSON correlation (Statistics); MOLECULAR structure; ENERGY consumption; EVIDENCE gaps; HYDROTHERMAL carbonization; RESPONSE surfaces (Statistics)
- Publication
Polymers (20734360), 2024, Vol 16, Issue 11, p1529
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym16111529