Co-gasification reactivity and synergy of banana residue hydrochar and anthracite coal blends

Mosqueda, Alexander; Wei, Juntao; Medrano, Katleya; Gonzales, Hazel Bantolino; Ding, Lu; Yu, Guangsuo; Yoshikawa, Kunio

doi:10.1016/j.apenergy.2019.05.008

Cited by 40 publications

(10 citation statements)

References 39 publications

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“…The Origin 9.0 software is used to perform peak fitting on the original Raman spectrogram in this study. According to the chemical structure characteristics of coal char (Mosqueda et al 2019;Wei et al 2018), the original Raman spectrum was fitted into five bands, namely Lorenzian bands (G, D1, D2 and D4) and Gaussian band (D3). Figure 8 shows the peak fitting diagram of Raman spectra of semi-char from YCW gasification with 5 wt% IWC loaded at 1000°C.…”

Section: Char Chemical Structure Evolutionmentioning

confidence: 99%

Physico-chemical structure evolution characteristics of coal char during gasification in the presence of iron-based waste catalyst

Zhang

Song

Wang

et al. 2020

Int J Coal Sci Technol

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The present study aims to explore the physico-chemical structure evolution characteristic during Yangchangwan bituminous coal (YCW) gasification in the presence of iron-based waste catalyst (IWC). The catalytic gasification reactivity of YCW was measured by thermogravimetric analyzer. Scanning electron microscope–energy dispersive system, nitrogen adsorption analyzer and laser Raman spectroscopy were employed to analyze the char physico-chemical properties. The results show that the optimal IWC loading ratio was 5 wt% at 1000 °C. The distribution of IWC on char was uneven and Fe catalyst concentrated on the surface of some chars. The specific surface area of YCW gasified semi-char decreased significantly with the increase of gasification time. i.e., the specific surface area reduced from 382 m2/g (0 min) to 192 m2/g (3 min), meanwhile, the number of micropores and mesopores decreased sharply at the late gasification stage. The carbon microcrystalline structure of YCW gasified semi-char was gradually destroyed with the increase of gasification time, and the microcrystalline structure with small size was gradually generated, resulting in the decreasing order degree of carbon microcrystalline structure. IWC can catalyze YCW gasification which could provide theoretical guidance for industrial solid waste recycling.

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Section: Char Chemical Structure Evolutionmentioning

confidence: 99%

Physico-chemical structure evolution characteristics of coal char during gasification in the presence of iron-based waste catalyst

Zhang

Song

Wang

et al. 2020

Int J Coal Sci Technol

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“…In addition, it has been reported that the structure of lignin and cellulose is also damaged, and the crystallinity is reduced. In contrast, hydrothermal pretreatment can effectively remove AAEMs while giving the biomass higher cellulose crystallinity and thermal stability [ 20 ]. Chang et al [ 21 ] studied the effect of hydrothermal pretreatment on the rapid pyrolysis of biomass to produce bio-oil.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Demineralization and Pyrolysis Performance of Eucalyptus Hydrothermal Pretreatment

Zhu

Bao

et al. 2022

Polymers

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The preparation of bio-oil through biomass pyrolysis is promoted by different demineralization processes to remove alkali and alkaline earth metal elements (AAEMs). In this study, the hydrothermal pretreatment demineralization was optimized by the response surface method. The pretreatment temperature, time and pH were the response elements, and the total dissolution rates of potassium, calcium and magnesium were the response values. The interactions of response factors for AAEMs removal were analyzed. The interaction between temperature and time was significant. The optimal AAEMs removal process was obtained with a reaction temperature of 172.98 °C, time of 59.77 min, and pH of 3.01. The optimal dissolution rate of AAEMs was 47.59%. The thermal stability of eucalyptus with and without pretreatment was analyzed by TGA. The hydrothermal pretreatment samples exhibit higher thermostability. The composition and distribution of pyrolysis products of different samples were analyzed by Py-GC/MS. The results showed that the content of sugars and high-quality bio-oil (C6, C7, C8 and C9) were 60.74% and 80.99%, respectively, by hydrothermal pretreatment. These results show that the removal of AAEMs through hydrothermal pretreatment not only improves the yield of bio-oil, but also improves the quality of bio-oil and promotes an upgrade in the quality of bio-oil.

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“…1,11 Simultaneously, the process extracts water-soluble ash-forming minerals from biomass into the aqueous phase, thus reducing the alkaline index of resultant hydrochar. 12 Consequently, the tendency for ash fouling and slagging is diminished. 13 Intensive HT conditions can yield chars similar to lignite coal at best, beyond which, more severe conditions render the process uneconomical.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrothermal treatment is the thermochemical conversion of biomass into an energy-dense carbonaceous solid using an aqueous medium operated under subcritical conditions. , The densified solid, also known as hydrochar, is a result of biomass transformation via chemical reactions which include decarboxylation, decarbonylation, dehydration, polymerization, recondensation, aromatization, and hydrolysis. , Simultaneously, the process extracts water-soluble ash-forming minerals from biomass into the aqueous phase, thus reducing the alkaline index of the resultant hydrochar . Consequently, the tendency for ash fouling and slagging is diminished .…”

Section: Introductionmentioning

confidence: 99%

“…The proposed mechanism of catalysis is initiated by migration of AAEMs from biomass to the tire char. Subsequently, there are deposition and preferential accommodation on and within carbon matrix imperfections resulting in the formation of swelling graphitic intercalation compounds that strain carbon bonds and ease bond breaking. , In addition, the degree of graphitization and aromatic ring condensation are suppressed, and consequently, the gasification reaction is promoted via a reduction in activation energy. It is, therefore, reasonable to infer that migration and accessibility of the char matrix by catalytic species has a profound effect on the extent and nature of the interaction.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Tire-Char Ash on the Extent of Synergy during CO₂ Cogasification with Hydrochar from Potassium-Rich Coconut Fiber

et al. 2020

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The influence of inherent tire char ash during co-gasification with coconut hydrochar prepared at different intensities was investigated by thermogravimetric analysis to ascertain the extent to which synergistic interaction, reactivity, and activation energy reduction were altered. High-ash tire tread (TT) and low-ash sidewall (SW) both exhibited enhanced synergy, reactivity, and activation reduction upon cogasification with hydrochars; however, the extent of promotion was more pronounced in SW-hydrochar blends. This difference was caused by the inhibiting nature of TT inherent ash, particularly the role of Sicontaining compounds. Inhibition in TT-hydrochar blends was mainly due to the promotion of alkaline and alkaline earth metal transformation into inactive silicates, and to a lesser extent, the mass transfer effect caused by accumulated ash, especially at conversions higher than 70%. The extent of enhancement correlated well with the concentration of available alkaline and alkaline earth metals. The findings may be useful in justifying the exclusion of high ash tire char as gasification feedstock to mitigate ash-related problems.

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Co-gasification reactivity and synergy of banana residue hydrochar and anthracite coal blends

Cited by 40 publications

References 39 publications

Physico-chemical structure evolution characteristics of coal char during gasification in the presence of iron-based waste catalyst

Physico-chemical structure evolution characteristics of coal char during gasification in the presence of iron-based waste catalyst

Optimization of Demineralization and Pyrolysis Performance of Eucalyptus Hydrothermal Pretreatment

Effect of Tire-Char Ash on the Extent of Synergy during CO₂ Cogasification with Hydrochar from Potassium-Rich Coconut Fiber

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Co-gasification reactivity and synergy of banana residue hydrochar and anthracite coal blends

Cited by 40 publications

References 39 publications

Physico-chemical structure evolution characteristics of coal char during gasification in the presence of iron-based waste catalyst

Physico-chemical structure evolution characteristics of coal char during gasification in the presence of iron-based waste catalyst

Optimization of Demineralization and Pyrolysis Performance of Eucalyptus Hydrothermal Pretreatment

Effect of Tire-Char Ash on the Extent of Synergy during CO2 Cogasification with Hydrochar from Potassium-Rich Coconut Fiber

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Effect of Tire-Char Ash on the Extent of Synergy during CO₂ Cogasification with Hydrochar from Potassium-Rich Coconut Fiber