Energy analysis of olive pomace valorization via hydrothermal carbonization

Semaan, Jean-Noël; Belandria, Verónica; Missaoui, Ayoub; Sarh, Brahim; Gökalp, İskender; Bostyn, Stéphane

doi:10.1016/j.biombioe.2022.106590

Cited by 9 publications

(9 citation statements)

References 39 publications

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“…The van Krevelen diagram (Figure 3) showed that the increase in HTC process severity reduction in H/C and O/C ratios was caused by the intensified dehydration and decarboxylation reactions during the HTC of OP [13,70]. Consequently, hydrochar produced at 250 • C for 30 min possessed enhanced aromaticity and resembled the characteristics of lignite coal [71], which is in line with previous studies on OP hydrochar [23,31]. The correlation between hydrochar characteristics was depicted in the Pearson correlation plot (Figure 4), prepared by Statgraphics Version 19.6.02 (Statgraphics Technologies, Inc., The Plains, VA, USA).…”

Section: Characteristics Of Raw Materials and Hydrocharssupporting

confidence: 86%

“…Experiments were undertaken with two process variables, i.e., temperature (180–250 °C) and holding time (2–30 min). These process conditions were adapted on the basis of the previous research findings [ 23 , 31 ]. The stirrer speed was 150 rpm, while the heating rate was approximately 2 to 5 °C·min −1 , and the cooling rate was from 10 to 20 °C·min −1 for all the HTC experiments.…”

Section: Methodsmentioning

confidence: 99%

“…The 1/6 ratio was mentioned to be equivalent to 86% of the amount of moisture present [31]. Semaan et al (2022) performed hydrothermal carbonization experiments with a biomass/ water weight ratio of 1/3 at 180-250 • C for 0-60 min and reported 1.26 EDR for OP hydrochar [23]. The optimal HTC conditions for producing the hydrochar with the highest EY of 87.9% were 202.7 • C and 2.0 min.…”

Section: Tga-dsc Analysismentioning

confidence: 99%

“…The advancement of research on OP hydrochar is essential to promoting its practical applications as a biofuel [ 23 , 24 , 25 ]. For instance, the mineral composition of hydrochars and associated slagging and fouling risks have seldom been investigated [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Industrial Two-Phase Olive Pomace Slurry-Derived Hydrochar Fuel for Energy Applications

Karim,

Martínez-Cartas,

Cuevas-Aranda

2024

Polymers

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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.

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Section: Characteristics Of Raw Materials and Hydrocharssupporting

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Section: Tga-dsc Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Industrial Two-Phase Olive Pomace Slurry-Derived Hydrochar Fuel for Energy Applications

Karim,

Martínez-Cartas,

Cuevas-Aranda

2024

Polymers

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“…According to Directive 2009/28/EC defined by the European Parliament and Council, the term biomass has a larger meaning describing the biodegradable fraction of products, including wastes and residues from different industries such as agriculture, forestry, fisheries, and aquaculture, industrial and municipal1 waste of biological origin associated to energy/fuel production. − …”

Section: Introductionmentioning

confidence: 99%

Synthesis and Mechanical Performances of Polyurethane Bio-Based Adhesives Resulted from the Depolymerization of Lignocellulose Biomass

Rusen,

Toader,

Diacon

et al. 2023

ACS Omega

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The purpose of this study is to valorize biomass waste into products with added value for indoor applications. Thus, broadleaf sawdust was chemically processed by the solvolysis reaction in acid catalysis in the presence of diethylene glycol at 160 °C for 4 h. After filtration and removal of the unreacted biomass, the glycolysis product was used in 6 different polyurethane adhesive formulations for wood bonding. The adhesive films were characterized by FT-IR, TGA, and DMA, while the mechanical performances were investigated by tensile and three-point bending tests. An innovative method for the determination of the working time was proposed. After the displacement of the wood substrates by the tensile test, the bonded area was investigated by SEM analysis. To confirm a correlation between the mechanical performances of the adhesives and their structure/formulation, two-dimensional (2D) simulations were performed based on the tensile tests.

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Enhancing biomethane production from food waste using olive pomace hydrochar: An optimization study

Habchi,

Lahboubi,

Asbik

et al. 2024

Environmental Advances

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Energy analysis of olive pomace valorization via hydrothermal carbonization

Cited by 9 publications

References 39 publications

Industrial Two-Phase Olive Pomace Slurry-Derived Hydrochar Fuel for Energy Applications

Industrial Two-Phase Olive Pomace Slurry-Derived Hydrochar Fuel for Energy Applications

Synthesis and Mechanical Performances of Polyurethane Bio-Based Adhesives Resulted from the Depolymerization of Lignocellulose Biomass

Enhancing biomethane production from food waste using olive pomace hydrochar: An optimization study

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