Mathematical modelling of gasification process of sewage sludge in reactor of negative CO2 emission power plant

Ziółkowski, Paweł; Badur, Janusz; Pawlak-Kruczek, Halina; Stasiak, Kamil; Amiri, Milad; Niedźwiecki, Łukasz; Krochmalny, Krystian; Mularski, Jakub; Madejski, Paweł; Mikielewicz, Dariusz

doi:10.1016/j.energy.2021.122601

Cited by 29 publications

(14 citation statements)

References 72 publications

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“…Considering gasification as a viable alternative for sewage sludge and other biomasses is now being discussed due to various economic concerns (Bwapwa, 2021). Gasification could provide an affordable and sustainable alternative to converting SS into clean energy in some situations where the costs for fossil fuels are greater and supplies are unreliable, provided that appropriate feedstocks are readily funded (Ziółkowski et al., 2022). It may conclude that sewage sludge gasification can significantly address the future demands of expanding energy production by considering gasification characteristics and the most significant technologies.…”

Section: Thermochemical Convection Of Sewage Sludgementioning

confidence: 99%

A comprehensive review on sewage sludge as sustainable feedstock for bioenergy production

Gizaw,

Periyasamy,

Redda

et al. 2023

Environmental Quality Mgmt

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The greatly rising amounts of sewage sludge from different sources are causing severe concerns around the globe. Disposal of sewage sludge is exceptionally difficult and poses serious environmental problems due to the significant quantity of toxic heavy metals and organic contaminants in its constituents. This review provides an overview of different conversion methods of sewage sludge into energy, that is, pyrolysis, hydrothermal gasification, hydrothermal liquefaction, hydrothermal carbonization, anaerobic digestion, and transesterification. It also focuses on each conversion route's state‐of‐the‐art research advances, features, and drawbacks to ensure financial and ecological responsibility. The detailed descriptions of the methods and respective energy generation could help scholars and industrialists produce energy from sewage sludge to keep the environment harmless.

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Section: Thermochemical Convection Of Sewage Sludgementioning

confidence: 99%

A comprehensive review on sewage sludge as sustainable feedstock for bioenergy production

Gizaw,

Periyasamy,

Redda

et al. 2023

Environmental Quality Mgmt

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“…The real LHV values (Table 5) are similar t those obtained by Striūgas et al [63], who performed plasma-assisted gasification of sew age sludge and achieved an LHV of 4.82 MJ/mN 3 . Temperature is important in the gasification process, which is also the case for sewage sludge gasification [66]. Werle noticed a decrease in temperature and an increase in the concentration of combustible components in the producer gas with an increased oxygen content of the sludge [67].…”

Section: Two-stage Sewage Sludge Utilisation Process-stage I: Plasma-...mentioning

confidence: 99%

Entrained Flow Plasma Gasification of Sewage Sludge–Proof-of-Concept and Fate of Inorganics

et al. 2022

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Sewage sludge is a residue of wastewater processing that is biologically active and consists of water, organic matter, including dead and living pathogens, polycyclic aromatic hydrocarbons, and heavy metals, as well as organic and inorganic pollutants. Landfilling is on the decline, giving way to more environmentally friendly utilisation routes. This paper presents the results of a two-stage gasification–vitrification system, using a prototype-entrained flow plasma-assisted gasification reactor along with ex situ plasma vitrification. The results show that the use of plasma has a considerable influence on the quality of gas, with a higher heating value of dry gas exceeding 7.5 MJ/mN3, excluding nitrogen dilution. However, dilution from plasma gases becomes the main problem, giving a lower heating value of dry gas with the highest value being 5.36 MJ/mN3 when dilution by nitrogen from plasma torches is taken into account. An analysis of the residues showed a very low leaching inclination of ex-situ vitrified residues. This suggests that such a system could be used to avoid the problem of landfilling significant amounts of ash from sewage sludge incineration by turning inorganic residues into a by-product that has potential use as a construction aggregate.

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“…Gasification is one of the most feasible thermochemical processes, besides pyrolysis and torrefaction, for producing high-quality, sustainable, multi-purpose materials that can widely replace fossil fuel-based materials in many applications [1][2][3]. The equivalence ratio (ER) usually ranges from 0.1 to 0.5, while process temperatures are held between 650 and 1200 • C [4,5] depending on the gasification principle (fixed bed [6], fluidised bed [7], or entrained flow [8]).…”

Section: Introductionmentioning

confidence: 99%

Co-Gasification of Pistachio Shells with Wood Pellets in a Semi-Industrial Hybrid Cross/Updraft Reactor for Producer Gas and Biochar Production

Ryšavý,

Čespiva,

Kuboňová

et al. 2024

Fire

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The possibilities of pistachio shell biochar production on laboratory-scale gasification and pyrolysis devices have been described by several previous studies. Nevertheless, the broader results of the pistachio shell co-gasification process on pilot-scale units have not yet been properly investigated or reported, especially regarding the detailed description of the biochar acquired during the routine operation. The biochar was analysed using several analytical techniques, such as ultimate and proximate analysis (62%wt of C), acid–base properties analysis (pH 9.52), Fourier-transform infrared spectroscopy (the presence of –OH bonds and identification of cellulose, hemicellulose and lignin), Raman spectroscopy (no determination of Id/Ig ratio due to high fluorescence), and nitrogen physisorption (specific surface 50.895 m2·g−1). X-ray fluorescence analysis exhibited the composition of the main compounds in the biochar ash (32.5%wt of Cl and 40.02%wt of Na2O). From the energy generation point of view, the lower heating value of the producer gas achieved 6.53 MJ·m−3 during the co-gasification. The relatively high lower heating value of the producer gas was mainly due to the significant volume fractions of CO (6.5%vol.), CH4 (14.2%vol.), and H2 (4.8 %vol.), while hot gas efficiency accomplished 89.6%.

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Mathematical modelling of gasification process of sewage sludge in reactor of negative CO2 emission power plant

Cited by 29 publications

References 72 publications

A comprehensive review on sewage sludge as sustainable feedstock for bioenergy production

A comprehensive review on sewage sludge as sustainable feedstock for bioenergy production

Entrained Flow Plasma Gasification of Sewage Sludge–Proof-of-Concept and Fate of Inorganics

Co-Gasification of Pistachio Shells with Wood Pellets in a Semi-Industrial Hybrid Cross/Updraft Reactor for Producer Gas and Biochar Production

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