Kinetic Parameters of Torrefaction Process of Alternative Fuel Produced From Municipal Solid Waste and Characteristic of Carbonized Refuse  Derived Fuel

Stępień, Paweł; Białowiec, Andrzej

doi:10.31025/2611-4135/2018.13702

Cited by 13 publications

(17 citation statements)

References 26 publications

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“…composting or fermentation) and highly efficient (co-)incineration of (pre-treated) residual and commercial waste. This statement is confirmed at international level too and is discussed in case studies given by Ionescu et al (2013), Rada et al (2018), Ranieri et al (2017), Sipra et al (2018) and Stępień and Białowiec (2018). Different treatment and manufacturing steps need to be accomplished before a waste becomes a waste fuel for co-incineration plants (e.g.…”

Section: From Municipal and Commercial Solid Non-hazardous Waste To Srfmentioning

confidence: 69%

Production and Characterisation of SRF Premium Quality From Municipal and Commercial Solid Non-Hazardous Wastes in Austria, Croatia, Slovenia and Slovakia

Šarc

Kandlbauer

Lorber

et al. 2019

Volume 09 - March 2020

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The production of Solid Recovered Fuel (SRF) and related energy recovery in the European cement industry represents the state of the art in waste management, having evolved into a highly important part of a sustainable and circular economy. This paper describes the production and quality of eight Solid Recovered Fuels (SRF) of PREMIUM quality that are produced from Municipal (Mixed) and selected Commercial Wastes (i.e. Bulky and Lightweight Fraction from Plastic Sorting Plants) in three types of treatment plants located in four European countries, namely Austria, Croatia, Slovenia and Slovakia. The investigated SRF PREMIUM Quality was produced in three different Plant Types applying various process technologies. All three types have been investigated and are described in detail (i.e. flow sheet). Eight SRF PREMIUM Qualities have been comprehensively investigated by sorting, sieving, and physical-chemical analyses. Analyses performed are in accordance with (inter)national standards (i.e. Austrian “ÖNORM”, European “EN” standards and CEN TC 343 guidelines). The results gained show that all investigated SRF fulfil the Austrian quality requirements for heavy metals before co-incineration in the cement industry and it can be confirmed that SRF produced in the investigated plants in Austria, Croatia, Slovenia and Slovakia in fact may be declared as “SRF PREMIUM Quality” that can be used for energy recovery on the European SRF market and utilized in the European cement industry.

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Section: From Municipal and Commercial Solid Non-hazardous Waste To Srfmentioning

confidence: 69%

Production and Characterisation of SRF Premium Quality From Municipal and Commercial Solid Non-Hazardous Wastes in Austria, Croatia, Slovenia and Slovakia

Šarc

Kandlbauer

Lorber

et al. 2019

Volume 09 - March 2020

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“…Produced biochars are hydrophobic and have increased energy density due to volume reduction. Torrefaction can convert food waste, sewage sludge, a combustible fraction of municipal solid waste (also known as refuse-derived fuel, RDF) [19][20][21], high moisture herbaceous residues [22], and forest residues [23,24] into fuel.…”

Section: Discussionmentioning

confidence: 99%

Fuel Properties of Torrefied Biomass from Pruning of Oxytree

Świechowski

Liszewski²,

Bąbelewski³

et al. 2019

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The very fast growing Oxytree (Paulownia Clon in Vitro 112) is marketed as a promising new energy crop. The tree has characteristically large leaves, thrives in warmer climates, and requires initial pruning for enhanced biomass production in later years. We explored valorizing the waste biomass of initial (first year) pruning via thermal treatment. Specifically, we used torrefaction (‘roasting’) to produce biochar with improved fuel properties. Here for the first time, we examined and summarized the fuel properties data of raw biomass of Oxytree pruning and biochars generated via torrefaction. The effects of torrefaction temperature (200~300 °C), process time (20~60 min), soil type, and agro-technical cultivation practices (geotextile and drip irrigation) on fuel properties of the resulting biochars were summarized. The dataset contains results of thermogravimetric analysis (TGA) as well as proximate and ultimate analyses of Oxytree biomass and generated biochars. The presented data are useful in determining Oxytree torrefaction reaction kinetics and further techno-economical modeling of the feasibility of Oxytree valorization via torrefaction. Oxytree torrefaction could be exploited as part of valorization resulting from a synergy between a high yield crop with the efficient production of high-quality renewable fuel.

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“…Biochar (BC) was produced from dried BSG. The biochar was made using muffle furnace (SNOL, model 8.1/1100, Utena, Lithuania) via torrefaction, according to a detailed procedure described by Stępień and Białowiec [21]. Parameters of the biochar production process were 300 • C, 60 min and inert gas (N 2 ) flow of 10 L•min −1 .…”

Section: Used Materialsmentioning

confidence: 99%

“…Recent trials show potential in using biochar for mitigation of ammonia emissions from livestock waste while increasing methane [20]. Biochar can also be produced from municipal waste to create a high-energy alternative fuel (carbonized refuse-derived fuel, CRDF) via torrefaction (low-temperature pyrolysis) [21]. Biochar properties can be modified while adjusting corresponding process parameters to achieve properties desired for an application [22].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Biochar Addition on the Biogas Production Kinetics from the Anaerobic Digestion of Brewers’ Spent Grain

et al. 2019

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Biochar (BC) addition is a novel and promising method for biogas yield increase. Brewer’s spent grain (BSG) is an abundant organic waste with a large potential for biogas production. In this research, for the first time, we test the feasibility of increasing biogas yield and rate from BSG digestion by adding BC, which was produced from BSG via torrefaction (low-temperature pyrolysis). Furthermore, we explore the digestion of BSG with the presence BCs produced from BSG via torrefaction (low-temperature pyrolysis). The proposed approach creates two alternative waste-to-energy and waste-to-carbon type utilization pathways for BSG: (1) digestion of BSG waste to produce biogas and (2) torrefaction of BSG to produce BC used for digestion. Torrefaction extended the short utility lifetime of BSG waste turned into BC. BSG was digested in the presence of BC with BC to BSG + BC weight ratio from 0 to 50%. The study was conducted during 21 days under mesophilic conditions in n = 3 trials. The content of dry mass 17.6% in all variants was constant. The kinetics results for pure BSG (0% BC) were: reaction rate constant (k) 1.535 d−1, maximum production of biogas (B0) 92.3 dm3∙kg−1d.o.m. (d.o.m. = dry organic matter), and biogas production rate (r), 103.1 dm3∙kg−1d.o.m.∙d−1. his preliminary research showed that the highest (p < 0.05) r, 227 dm3∙kg−1d.o.m.∙d−1 was due to the 5% BC addition. This production rate was significantly higher (p < 0.05) compared with all other treatments (0, 1, 3, 8, 10, 20, 30, and 50% BC dose). Due to the high variability observed between replicates, no significant differences could be detected between all the assays amended with BC and the variant 0% BC. However, a significant decrease of B0 from 85.1 to 61.0 dm3∙kg−1d.o.m. in variants with the high biochar addition (20–50% BC) was observed in relation to 5% BC (122 dm3∙kg−1d.o.m.), suggesting that BC overdose inhibits biogas production from the BSG + BC mixture. The reaction rate constant (k) was not improved by BC, and the addition of 10% and 20% BC even decreased k relatively to the 0% variant. A significant decrease of k was also observed for the doses of 10%, 20%, and 30% when compared with the 5% BC (1.89 d−1) assays.

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Kinetic Parameters of Torrefaction Process of Alternative Fuel Produced From Municipal Solid Waste and Characteristic of Carbonized Refuse Derived Fuel

Cited by 13 publications

References 26 publications

Production and Characterisation of SRF Premium Quality From Municipal and Commercial Solid Non-Hazardous Wastes in Austria, Croatia, Slovenia and Slovakia

Production and Characterisation of SRF Premium Quality From Municipal and Commercial Solid Non-Hazardous Wastes in Austria, Croatia, Slovenia and Slovakia

Fuel Properties of Torrefied Biomass from Pruning of Oxytree

The Effect of Biochar Addition on the Biogas Production Kinetics from the Anaerobic Digestion of Brewers’ Spent Grain

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