Pyrolysis of excavated waste from landfill mining: Characterisation of the process products

Jagodzińska, Katarzyna; Zaini, Ilman Nuran; Svanberg, Rikard; Yang, Weihong; Jönsson, Pär G.

doi:10.1016/j.jclepro.2020.123541

Cited by 34 publications

(17 citation statements)

References 57 publications

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“…Another NEW-MINE publication focused on further aspects of the pyrolysis process. Lab-scale pyrolysis tests at 400 to 700 • C with the above-mentioned light fraction of the Mont-Saint-Guibert landfill revealed the enrichment of polycyclic aromatic hydrocarbons (PAH) in the condensable pyrolysis products, highlighting the need to further treat this output fraction [100]. Although the main focus of thermochemical conversion technologies within NEW-MINE was on the treatment of the combustibles, thermal treatment (400/450 • C, 30 min) was also used to assess the quality of the nonferrous metals obtained from mechanical processing of the excavated waste from Mont-Saint-Guibert landfill [101].…”

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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“…Various types of lignocellulosic biomass or contaminated biomass can be used as a feedstock to produce bio-oil, bio-char, and pyrolytic gases during the pyrolytic process [26,33]. Pyrolysis is a thermochemical process in which organic substances are transformed into gaseous (pyrolytic gas), liquid (pyrolysis oil), and solid products (charcoal) [34,35]. The biooil can be further upgraded to transportation fuels and value-added chemicals, in turn the solid and gaseous products might be combusted to supply energy for the pyrolysis reaction or heat/power generation [36].…”

Section: Introductionmentioning

confidence: 99%

Management of Lignocellulosic Waste towards Energy Recovery by Pyrolysis in the Framework of Circular Economy Strategy

et al. 2021

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The article presents the possibilities of effective management of lignocellulosic waste by including it in the circular economy. The pyrolysis process was chosen as the thermal conversion method. This approach, due to a high flexibility of the obtained products, better quality of the solid residue (char), and the lower emission of pollutants into the atmosphere, e.g., SO2 and NOx, is a competitive solution compared to combustion process. Wood waste from alder and pine were analyzed. As part of laboratory tests, the elementary composition was determined, i.e., C, H, N, S, and O. The pyrolysis process was carried out at a temperature of 600 °C on an experimental stand for the conversion of solid fuels in a stationary bed. For the obtained data, using the Ansys Chemkin-Pro calculation tool, the detailed chemical composition of gaseous products of the pyrolysis process was modeled for a varying temperature range and residence time in the reactor. The studies have shown that for certain process conditions it is possible to obtain a high calorific value of pyrolytic gas, up to 25 MJ/m3.

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“…Furthermore, torrefaction typically decreases oxygen content and increases the carbon content of the valorized fuel [53,[67][68][69][70][71]. This enhancement could be deemed beneficial from the point of view of pyrolysis [72][73][74][75] or gasification [76][77][78][79]. Regarding reactivity of the torrefied material, Huescar Medina et al [80] observed that torrefaction slightly increased the reactivity of torrefied spruce wood in terms of K St (deflagration index), P max (maximum explosion pressure), and flame speed, whereas Jian et al observed reduced char reactivity at elevated pyrolysis temperatures [81].…”

Section: Introductionmentioning

confidence: 99%

Synergetic Co-Production of Beer Colouring Agent and Solid Fuel from Brewers’ Spent Grain in the Circular Economy Perspective

Jackowski¹,

Niedźwiecki²,

Mościcki³

et al. 2021

Sustainability

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Brewers’ Spent Grain is a by-product of the brewing process, with potential applications for energy purposes. This paper presents the results of an investigation aiming at valorization of this residue by torrefaction, making product for two purposes: a solid fuel that could be used for generation of heat for the brewery and a colouring agent that could replace colouring malt for the production of dark beers. Decreased consumption of malt for such purposes would have a positive influence on the sustainability of brewing. Torrefaction was performed at temperatures ranging between 180 °C and 300 °C, with a residence time between 20 and 60 min. For the most severe torrefaction conditions (300 °C, 60 min), the higher heating value of torrefied BSG reached 25 MJ/kg. However, the best beer colouring properties were achieved for mild torrefaction conditions, i.e., 180 °C for 60 min and 210 °C for 40 min, reaching European Brewery Convention colours of 145 and 159, respectively. From the solid fuel properties perspective, the improvements offered by torrefaction in such mild conditions were modest. Overall, the obtained results suggest some trade-off between the optimum colouring properties and optimum solid fuel properties that need to be considered when such dual-purpose torrefaction of BSG for brewery purposes is implemented.

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Pyrolysis of excavated waste from landfill mining: Characterisation of the process products

Cited by 34 publications

References 57 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

Management of Lignocellulosic Waste towards Energy Recovery by Pyrolysis in the Framework of Circular Economy Strategy

Synergetic Co-Production of Beer Colouring Agent and Solid Fuel from Brewers’ Spent Grain in the Circular Economy Perspective

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