Kinetic analyses and synergistic effects of CO2 co-gasification of low sulphur petroleum coke and biomass wastes

Edreis, Elbager M.A.; Li, Xian; Luo, Guangqian; Sharshir, Swellam W.; Yao, Hong

doi:10.1016/j.biortech.2018.06.089

Cited by 72 publications

(26 citation statements)

References 30 publications

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“…In reference to the mixtures, from Table 3 it can be observed that the kinetic parameters varied between those of component fuels. Present results are in agreement with those reported in the literature for agricultural wastes (Vamvuka & Sfakiotakis, 2015;Sadhwani et al, 2016;Xu et al, 2016;Edreis et al, 2018;He et al, 2021). Kinetic analysis was also performed for the gasification of biochars studied in presence of the most effective catalyst CaO as shown above, at a low percentage of 10% wt, as well as for the gasification of biochar/bio-oil blends at ratios 1:1.…”

Section: Kinetic Modeling Resultssupporting

confidence: 91%

Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes

Vamvuka¹,

Teftiki²,

Sfakiotakis³

2022

World Journal of Environmental Biosciences

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The present study aimed to investigate the valorization of Refused Derived Fuel (RDF) produced from solid waste management units for energetic uses, through its co-gasification with agricultural or forest wastes and carbon dioxide agents. Experiments were conducted using a fixed bed reactor and a thermal analysis system. The thermal behavior, the reactivity, the conversion, and the cold gas efficiency up to 950°C were evaluated based on the structural characteristics and inherent minerals of the materials, as well as on the basis of alkali catalysts and bio-oils admixed. Kinetic analysis of the co-gasification process was performed by developing an independent parallel reactions model. Blending RDF with the woody wastes at mass ratios 30:70 increased the conversion from 55% up to 86.4%. Gasification reactivity followed the order cotton stems>sunflower>pine cones>RDF. The addition of alkali compounds at low loadings as external catalysts enhanced conversion up to 100% and the process, in general, took place at much lower temperatures. The catalytic activity followed the order: CaO> Li2CO3>K2CO3. The addition of bio-oil at ratios 1:1 increased the conversion up to values 85-92%. The kinetic model applied was proven very successful, with deviation values below 5%. In presence of 10% wt, CaO the activation energy values of biochars were lowered from 148-252 kJ/mol to 138-201 kJ/mol, implying a better performance.

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Section: Kinetic Modeling Resultssupporting

confidence: 91%

Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes

Vamvuka¹,

Teftiki²,

Sfakiotakis³

2022

World Journal of Environmental Biosciences

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“…Alkali metals and alkaline earth metals in ash, such as Ca, K, can significantly promote the thermal conversion reaction in the pyrolysis and gasification process. Edreis [31,32] reported that the mixture of the petroleum coke and biomass wastes had high reactivity because of the catalytic effects of alkali metals in the mixture. Fe 2 O 3 also played a catalytic role during the pyrolysis of sewage sludge because Fe 2 O 3 enhanced the evaporation of the volatile and promoted the crack of biochar [33].…”

Section: Analysis Of Interaction Between Digestate and Lignitementioning

confidence: 99%

“…As shown in Table 2, the ash content of digestate increased with the increase of AD time. The alkali metals and alkaline earth metals cannot be consumed in AD process, leading to the more alkali metals and alkaline earth metals in the digestate with the increase of AD time, which played a catalytic role in the pyrolysis and gasification [31]. Hence, the catalytic effect was becoming more and more obvious with the increase of AD time, resulting in the reduction of activation energy gradually.…”

Section: S1 S2mentioning

confidence: 99%

Interaction and Kinetics Study of the Co-Gasification of High-solid Anaerobic Digestate and Lignite

et al. 2020

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This study aims at investigating the interaction and kinetics behavior of the co-gasification of digestate and lignite. The co-pyrolysis performances of digestate and lignite blended by dry process were better than that blended by wet process, while the wet-blending process could improve the performance in co-gasification stage because of the larger pore diameter and pore volume. When anaerobic digestion (AD) time was 40 days, the synergistic interaction between digestate and lignite were the most remarkable based on the results of thermogravimetric analysis (TG) and the experiments in the lab-scale downdraft fixed bed gasifier. Kinetics study showed that the increase of AD time and the addition of digestate in lignite decreased the activation energy of the co-gasification reaction.

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“…The problem of the disposal of rice residues (rice husk and straw) is mainly due to the difficulties of converting it to animals feeds compared with wheat residues in addition to the farmers believe in its benefits for the land when it is burned. Many solutions were introduced in the ME for the disposal of rice residue such as converting it to fuel by gasification [15][16][17], utilization of rice husk in mud bricks manufactures [18].…”

Section: Fruitsmentioning

confidence: 99%

“…Gasification is achieved by heating the biomass material to high temperatures (more than 700 °C), without combustion, but with a controlled amount of oxygen and/or steam. Many studies have been conducted in the ME using gasification conversion of different agricultural wastes such as rice residues [15][16][17], date stone [36,37].…”

Section: Gasificationmentioning

confidence: 99%

Renewable energy from solar, biomass and biofuels resources

Ibarhiam¹

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In the current study, the waste stones and rachis obtained from Barhee and Medjool dates palm trees were characterized on a laboratory scale and their potential as biomass feedstock were investigated. The proximate, ultimate, structure/composition and thermo-gravimetric analysis experiments were conducted to characterize the selected biomass materials. The results showed that the Medjool and Barhee stones are a promising biomass feedstock as they have high volatile and fixed carbon contents with low ash content. Moreover, they have high carbon and nitrogen contents with a very high cellulose contents reaching up to 66% in the case of Barhee stones. The thermo-gravimetric analysis showed that the decomposition of Barhee and Medjool stones can be completed below 420 °C; while it can be completed below 360 °C for Barhee and Medjool rachis under thermo-gravimetric pyrolysis analysis. Based on the TGA results obtained, slow pyrolysis experiments for the stones and rachis feedstock materials were conducted. Among the four slow pyrolysis trials, maximum yield for bio-oil of 21.54% was achieved when Barhee rachis was used, while Medjool rachis produced the least value. Characterization and analysis of the bio-oil extracted from the pyrolysis experiments showed the superiority of the bio-oil from Barhee stone as it has the highest heating value. The gas chromatography mass spectrometry analysis showed that phenol, furfural and benzoic acid are the main components of the bio-oil obtained from the date palm rachis samples while d-allose, furfural, 5-methyl 2-furancarboxaldehyde, and dodecanoic acid are the main components of the bio-oil extracted from the date palm stones. The opportunities of exploitation of renewable energy with solar, biomass and biofuels resources in the Middle East, are also reviewed in detail in this work. The techno-economic analysis for the concentrating solar power plants installed in the Middle East showed promising potential from the economic and technical point of view.

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Kinetic analyses and synergistic effects of CO2 co-gasification of low sulphur petroleum coke and biomass wastes

Cited by 72 publications

References 30 publications

Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes

Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes

Interaction and Kinetics Study of the Co-Gasification of High-solid Anaerobic Digestate and Lignite

Renewable energy from solar, biomass and biofuels resources

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