Hydrothermal carbonization of miscanthus: Processing, properties, and synergistic Co-combustion with lignite

Zhang, Yongsheng; Zahid, Ibrar; Danial, Ali; Minaret, Jamie; Cao, Yingnan; Dutta, Animesh

doi:10.1016/j.energy.2021.120200

Cited by 24 publications

(6 citation statements)

References 37 publications

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“…In order to con rm the combustion mechanism and E of hydrochars produced from the HTC treatment of oily scum, the kinetic parameters based on Arrhenius equation were applied for all hydrochar products in this study [32]. The rst-order kinetic reaction model is typically used for the combustion process of solid fuel [33]. Therefore, the pre-exponential factor (A), E and correlation coe cient (R) associated with the combustion process of hydrochars were calculated according to the rst-order reaction model equation [34].…”

Section: Kinetic Parametersmentioning

confidence: 99%

Investigation on Characteristics of Liquid and Hydrochar Products from Hydrothermal Carbonization of Oily Scum at Different Temperatures

Deng

Shi

Tan

et al. 2021

Preprint

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Hydrothermal carbonization (HTC) is a promising technology for upgrading organic substances with high moisture content. The characteristics of liquid and hydrochar products derived from oily scum at the different HTC temperatures were investigated in this study. The increase of HTC temperature resulted in a significant color shift of liquid from light yellow to strong yellow. The liquid uptake of hydrochar increased significantly with the increase of HTC temperature. SEM showed that there exhibited an irregular pit structure in hydrochars. Thermogravimetric analysis showed that high carbonization temperature of oily scum could improve the combustion characteristics of hydrochars. The comprehensive combustion properties were positively correlated with HTC temperature. The overall results of hydrochar combustion study showed that the activation energy of hydrochars decreased gradually with an increase in HTC temperature. This study provides a sustainable and promising treatment to reuse oily scum and suggests the possible fuel utilization of subsequent hydrochar product.

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Section: Kinetic Parametersmentioning

confidence: 99%

Investigation on Characteristics of Liquid and Hydrochar Products from Hydrothermal Carbonization of Oily Scum at Different Temperatures

Deng

Shi

Tan

et al. 2021

Preprint

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“…The perennial grass Miscanthus × giganteus (M × g) is an energy crop with good phytotechnology potential [26,27]. Its biomass has an impressive energy capacity close to that of wood [28], causing it to be recognised as a potential alternative energy source [29]. A significant aspect of integrating M × g into phytotechnology is the plant's resilience and high adaptability to adverse conditions, including the possibility of being cultivated in areas typically improper for the cultivation of conventional crops.…”

Section: Introductionmentioning

confidence: 99%

“…There has been an attempt to utilise M × g on agricultural marginal soil with the optimisation of the yield and quality of biomass [32]. Significant progress has been recently made regarding M × g biomass processing to derived bioproducts [33] and market share [34,35], as this cellulose-rich material has been processed into energy [28,[36][37][38], insulation materials [39], pulp [23], paper [40], biopolymers [41,42], and cellulose nanocrystals [43].…”

Section: Introductionmentioning

confidence: 99%

The Economic and Environmental Aspects of Miscanthus × giganteus Phytomanagement Applied to Non-Agricultural Land

Mamirova,

Pidlisnyuk

2024

Agronomy

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Miscanthus × giganteus (M × g) is a promising energy crop in phytotechnology with biomass production. Despite considerable vegetation and harvest under varying climate conditions and across different soils, field-scale studies on utilising M × g remain scarce. Analysing the literature and our own findings, this study intends to highlight the potential of M × g phytotechnology for revitalising non-agricultural lands (NAL), including brownfields, and illustrate the expediency of applying biochar to enhance biomass yield, energy efficiency, and economic feasibility. To validate the feasibility of M × g production on brownfields, two scenarios within the value chain “biomass–biogas–electricity” for green harvest were examined. The assumptions were as follows: (1) a methane yield of 5134 m3 ha−1 y−1, and (2) substrate-specific methane yields of 247 and 283 mL (g oDM)−1 for the first and subsequent years, respectively. The findings suggest that Scenario 2 is better suited for cultivating M × g on brownfields/NAL, being more sensitive and eliminating inaccuracies and the generalisations of results. From the third year onward, the revenue of M × g production on biochar-amended brownfields showed greater potential for future profitability. Future research should confirm the positive trend in the energy efficiency ratio of M × g phytotechnology on a larger scale, particularly in real brownfield applications.

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“…A large number of alkali metal ions catalyze the combustion process, and biomass volatiles containing a large number of free radicals (CH i , NH i , H) promote the reduction reaction of NO x . Zhang et al [ 23 ] conducted co-combustion experiments using pretreated miscanthus and lignite. The study found that blending miscanthus reduced the ignition temperature and burnout temperature during combustion, as well as the emission of pollutants while increasing the combustion rate.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Combustion and NO/SO2 Emission Characteristics during the Co-Combustion Process of Torrefied Biomass and Lignite

Yang,

Zhu,

et al. 2024

Molecules

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This paper investigates the combustion characteristics and pollutant emission patterns of the mixed combustion of lignite (L) and torrefied pine wood (TPW) under different blending ratios. Isothermal combustion experiments were conducted in a fixed bed reaction system at 800 °C, and pollutant emission concentrations were measured using a flue gas analyzer. Using scanning electron microscopy (SEM) and BET (nitrogen adsorption) experiments, it was found that torrefied pine wood (TPW) has a larger specific surface area and a more developed pore structure, which can facilitate more complete combustion of the sample. The results of the non-isothermal thermogravimetric analysis show that with the TPW blending ratio increase, the entire combustion process advances, and the ignition temperature, maximum peak temperature, and burnout temperature all show a decreasing trend. The kinetic equations of the combustion reaction process of mixed gas were calculated by Flynn–Wall–Ozawa (FWO) and Kissinger–Akahira–Sunose (KAS) kinetic equations. The results show that the blending of TPW reduces the activation energy of the combustion reaction of the mixed fuel. When the TPW blending ratio is 80%, the activation energy values of the mixed fuel are the lowest at 111.32 kJ/mol and 104.87 kJ/mol. The abundant alkali metal ions and porous structure in TPW reduce the conversion rates of N and S elements in the fuel to NO and SO2, thus reducing the pollutant emissions from the mixed fuel.

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Hydrothermal carbonization of miscanthus: Processing, properties, and synergistic Co-combustion with lignite

Cited by 24 publications

References 37 publications

Investigation on Characteristics of Liquid and Hydrochar Products from Hydrothermal Carbonization of Oily Scum at Different Temperatures

Investigation on Characteristics of Liquid and Hydrochar Products from Hydrothermal Carbonization of Oily Scum at Different Temperatures

The Economic and Environmental Aspects of Miscanthus × giganteus Phytomanagement Applied to Non-Agricultural Land

Investigation of Combustion and NO/SO2 Emission Characteristics during the Co-Combustion Process of Torrefied Biomass and Lignite

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