The steam gasification reactivity and kinetics of municipal solid waste chars derived from rapid pyrolysis

Xu, Fanfan; Wang, Bo; Yang, Dan; Qiao, Yingyun; Tian, Yuanyu

doi:10.1016/j.wasman.2018.09.006

Cited by 26 publications

(12 citation statements)

References 29 publications

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“…Within NEW-MINE, the light fraction obtained by mechanical processing of excavated waste from the Mont-Saint-Guibert landfill was subjected to pyrolysis (N 2 atmosphere, 900 • C, 1 h) and the resulting char was subjected to steam gasification using thermogravimetry analysis (TGA) to study the reaction kinetics [80]. This publication was cited as one of the few studies on gasification kinetics of MSW chars [81] and regarding the observed increase in activation of the char by gasification [82]. Furthermore, the study was cited with respect to the energy savings, low NO x emissions and pollutant reduction of steam gasification compared to conventional thermochemical conversion technologies [83].…”

Section: Thermochemical Conversionmentioning

confidence: 99%

The EU Training Network for Resource Recovery through Enhanced Landfill Mining—A Review

2021

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The “European Union Training Network for Resource Recovery Through Enhanced Landfill Mining (NEW-MINE)” was a European research project conducted between 2016 and 2020 to investigate the exploration of and resource recovery from landfills as well as the processing of the excavated waste and the valorization of the obtained waste fractions using thermochemical processes. This project yielded more than 40 publications ranging from geophysics via mechanical process engineering to ceramics, which have not yet been discussed coherently in a review publication. This article summarizes and links the NEW-MINE publications and discusses their practical applicability in waste management systems. Within the NEW-MINE project in a first step concentrates of specific materials (e.g., metals, combustibles, inert materials) were produced which might be used as secondary raw materials. In a second step, recycled products (e.g., inorganic polymers, functional glass-ceramics) were produced from these concentrates at the lab scale. However, even if secondary raw materials or recycled products could be produced at a large scale, it remains unclear if they can compete with primary raw materials or products from primary raw materials. Given the ambitions of transition towards a more circular economy, economic incentives are required to make secondary raw materials or recycled products from enhanced landfill mining (ELFM) competitive in the market.

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Section: Thermochemical Conversionmentioning

confidence: 99%

The EU Training Network for Resource Recovery through Enhanced Landfill Mining—A Review

2021

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“…The MSW gasification can be conducted in the large-scale fixed bed reactor or fluidized bed under medium temperatures in future studies, using the oxygen-rich air as the gasification agent. Compared with incineration, the products from gasification are abundant and can be used in various applications [3,6,43,51].…”

Section: Product Yield and Energy Efficiencymentioning

confidence: 99%

“…Traditional MSW disposal treatments, such as landfill, incineration, composting, recycling, and others, have various drawbacks. For instance, the disposal period of landfill is long and it takes up too much available space, which is not suitable as a long-term solution [2,3], composting and recycling are inefficient and the handling capacity is limited, and other methods need to be developed [4]. Although incineration can efficiently recover energy of solid waste and reduce the weight and volume of MSW, the pollutants, e.g., NO x , HCl, dioxins, and heavy metals, still restrict its development [3,5].…”

Section: Introductionmentioning

confidence: 99%

“…For instance, the disposal period of landfill is long and it takes up too much available space, which is not suitable as a long-term solution [2,3], composting and recycling are inefficient and the handling capacity is limited, and other methods need to be developed [4]. Although incineration can efficiently recover energy of solid waste and reduce the weight and volume of MSW, the pollutants, e.g., NO x , HCl, dioxins, and heavy metals, still restrict its development [3,5]. Gasification is defined as the process of converting material into gaseous, liquid, and solid products in the atmosphere of partial oxygen through thermochemical reactions, and the biogas is the most widely used product [6].…”

Section: Introductionmentioning

confidence: 99%

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Analyses for Synthesis Gas from Municipal Solid Waste Gasification under Medium Temperatures

Jin

et al. 2020

Processes

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Municipal solid waste (MSW) gasification could be a novel method that shows the various advantages over traditional MSW treatments in China. Other research concluded that MSW gasification was operating by the assistant heat, and the gasification may occur under medium temperature. So, this study is aimed to investigate MSW gasification and pyrolysis behavior and analyze the syngas evolution and reaction mechanism. The MSW samples were collected in daily life and the experiments were carried out in a fixed tubular reactor below 650 °C. The effects of medium temperature and oxygen content on syngas quality were elucidated in depth. The results have shown that temperature can promote the syngas quality in the range of 550–650 °C, because the increasing temperature strengthens the reaction rate. The oxygen content should be controlled in a certain range, or oxidation reactions will be more prominent during gasification. The optimal gasification condition in this study was obtained at 650 °C and an oxygen concentration of 1.25%, the combustible gas yield and the lower heating value (LHV) of syngas of this condition were 0.296 L/g and 10.98 kJ/L, respectively. This study provides insights for MSW gasification under medium temperature, and a practical gasification system can be designed under a certain condition.

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“…Cabrera et al [7] expected that incineration of MSW worldwide will increase due to increases in consumption and the limitations of landfills. Global MSW generation is expected to reach 2.2 billion tons by 2025 [8]. Seo [9] found that South Korea produced 18.6 million tons of MSW in 2009 and that production is due to increase in the future.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Municipal Solid Waste Incineration Bottom Ash as Fine Aggregate of Cement Mortars

et al. 2021

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Incineration bottom ash is generated by the incineration of solid waste. Household solid waste is increasing every year and so is incineration bottom ash. This is a problem to treat the incineration bottom ash because the ash has many toxic components. Cement composites can solve this problem and there are many studies for using the bottom ash as fine aggregate. To evaluate the usage of incineration bottom ash, compressive strength, mercury intrusion porosimetry, scanning electron microscopy-backscatter electron, X-ray diffraction, and toxicity characteristic leaching processes were performed. When using incineration bottom ash up to 20% of substitution, the compressive strength in all cases was increased. This study showed how the filler effect appeared well in the cement composites through the scanning electron microscopy-backscatter electron, and mercury intrusion porosimetry. X-ray diffraction indicated the possibility of an alkali-silica reaction of the aggregate with the components of incineration bottom ash. This problem is an obstacle to applying the incineration bottom ash as a fine aggregate. In addition, the toxicity characteristic leaching process was shown to be under the threshold of the Korean standard, however, this should nuanced by the consideration of amorphity. Comprehensively, incineration bottom ash could be used as a fine aggregate of up to 20% of substitution. However, the pre-treatment would need to eliminate or reduce alkali reactive components and heavy metals.

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The steam gasification reactivity and kinetics of municipal solid waste chars derived from rapid pyrolysis

Cited by 26 publications

References 29 publications

The EU Training Network for Resource Recovery through Enhanced Landfill Mining—A Review

The EU Training Network for Resource Recovery through Enhanced Landfill Mining—A Review

Analyses for Synthesis Gas from Municipal Solid Waste Gasification under Medium Temperatures

Utilization of Municipal Solid Waste Incineration Bottom Ash as Fine Aggregate of Cement Mortars

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