Enhancing cleaner biomass-coal co-combustion by pretreatment of wheat straw via washing versus hydrothermal carbonization

Ma, Liyang; Goldfarb, Jillian L.; Song, Jiande; Chang, Chun; Ma, Qiulin

doi:10.1016/j.jclepro.2022.132991

Cited by 27 publications

(11 citation statements)

References 59 publications

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“…This indicates that the moisture residue reduces the calorific value of fuels, and fuels treated by drying exhibit higher combustion calorific values. 37 As shown in Fig. 3b , the calorific value of coal blended with bio-heavy oil is higher than that of coal.…”

Section: Resultsmentioning

confidence: 86%

Combustion properties and pollutant analysis of coal-blended bio-heavy oil fuel

Bai,

Sun,

Pan

et al. 2024

RSC Adv.

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Section: Resultsmentioning

confidence: 86%

Combustion properties and pollutant analysis of coal-blended bio-heavy oil fuel

Bai,

Sun,

Pan

et al. 2024

RSC Adv.

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“…The reduction of volatile components resulted in the enlargement of the pores of biochar particles. When the biochar and coal are co-combusted, the coal particles may block the pore structure of the biochar and inhibit the contact between the biochar and the air, which shifts the whole co-combustion process toward the high temperature region and leaves more residues at the end of the degradation process [38]. It can be observed from Figure 4a,c,d that the experimental TG curves of the blends were all lower than the corresponding theoretical TG curves after 325 • C if the blends had the addition of walnut shell, which indicates that the interactions between the materials were synergistic.…”

Section: Interactions Between Materialsmentioning

confidence: 99%

Section: Interactions Between Materialsmentioning

confidence: 99%

Research on Co-Combustion Behaviors of Binary and Ternary Blends of Coal, Walnut Shell, and Biochar by TGA

Wang¹,

Song²,

Liu

et al. 2022

Processes

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In this paper, the co-combustion behavior of the walnut shell, biochar, and coal, and the respective binary and ternary blends were investigated by thermogravimetric analysis (TGA) in the oxy-fuel atmosphere (21% O2/79% CO2). The combustion reactivity of coal was similar to biochar but lower than that of the walnut shell. The presence of the walnut shell improved the combustion performance of coal and biochar. The interaction between only biochar and coal was inhibited in the binary blends. The presence of the walnut shell in the ternary blend covered up the inhibition between biochar and coal. The average activation energy of each sample was obtained using the Kissinger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO) kinetic models. The results of this study provide a reference for the rational utilization of biomass and biochar and the practical improvement of the thermal conversion efficiency of coal.

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“…Nevertheless, in this study, the conditions for acid pretreatment were not optimised using response surface methodology, and the co-production of solid biofuels and their characteristics were not included. This analysis would be of great interest to valorise the final lignin-rich solid by thermochemical routes such as combustion, gasification or pyrolysis (Woytiuk et al 2017 ; Liu et al 2022 ; Ma et al 2022 ). The main objective of the present study was to investigate the potential of almond prunings for sugar production through a two-stage sequential process (pretreatment with dilute sulphuric acid and enzymatic hydrolysis of the pretreated solids) optimising the pretreatment conditions.…”

Section: Introductionmentioning

confidence: 99%

Optimisation of sugar and solid biofuel co-production from almond tree prunings by acid pretreatment and enzymatic hydrolysis

Cuevas-Aranda,

Martínez-Cartas,

Mnasser

et al. 2024

Bioresour. Bioprocess.

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Almond pruning biomass is an important agricultural residue that has been scarcely studied for the co-production of sugars and solid biofuels. In this work, the production of monosaccharides from almond prunings was optimised by a two-step process scheme: pretreatment with dilute sulphuric acid (0.025 M, at 185.9–214.1 ℃ for 0.8–9.2 min) followed by enzyme saccharification of the pretreated cellulose. The application of a response surface methodology enabled the mathematical modelling of the process, establishing pretreatment conditions to maximise both the amount of sugar in the acid prehydrolysate (23.4 kg/100 kg raw material, at 195.7 ℃ for 3.5 min) and the enzymatic digestibility of the pretreated cellulose (45.4%, at 210.0 ℃ for 8.0 min). The highest overall sugar yield (36.8 kg/100 kg raw material, equivalent to 64.3% of all sugars in the feedstock) was obtained with a pretreatment carried out at 197.0 ℃ for 4.0 min. Under these conditions, moreover, the final solids showed better properties for thermochemical utilisation (22.0 MJ/kg heating value, 0.87% ash content, and 72.1 mg/g moisture adsorption capacity) compared to those of the original prunings. Graphical Abstract

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Enhancing cleaner biomass-coal co-combustion by pretreatment of wheat straw via washing versus hydrothermal carbonization

Cited by 27 publications

References 59 publications

Combustion properties and pollutant analysis of coal-blended bio-heavy oil fuel

Combustion properties and pollutant analysis of coal-blended bio-heavy oil fuel

Research on Co-Combustion Behaviors of Binary and Ternary Blends of Coal, Walnut Shell, and Biochar by TGA

Optimisation of sugar and solid biofuel co-production from almond tree prunings by acid pretreatment and enzymatic hydrolysis

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