Torrefaction of landfill food waste for possible application in biomass co-firing

Pahla, G.; Ntuli, Freeman; Muzenda, Edison

doi:10.1016/j.wasman.2017.10.035

Cited by 95 publications

(37 citation statements)

References 27 publications

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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

Data

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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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Section: Discussionmentioning

confidence: 99%

Fuel Properties of Torrefied Biomass from Pruning of Oxytree

Świechowski

Liszewski²,

Bąbelewski³

et al. 2019

Data

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“…This trend shows that increasing both temperature and residence time has a detrimental effect on the mass yield, while the opposite for the particle size. The initial loss of mass is primarily due to loss of inherent moisture due to dehydration and the decomposition of aliphatic compounds [9] from carbohydrates in the food waste. In addition, there is a possible decomposition of hemicellulose and cellulose in…”

Section: Mass Yieldmentioning

confidence: 99%

“…However, they were not quantified. This can be linked to the decomposition and released of higher hydrocarbons at higher torrefaction temperatures [9]. The most appropriate or optimum torrefaction temperature, however, cannot be chosen based on mass yield alone, as the torrefaction is linear in trend.…”

Section: Figmentioning

confidence: 99%

Effect of Torrefaction Temperature, Residence Time and Particle Size on the Properties of Torrefied Food Waste

et al. 2019

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Municipal solid waste (MSW) in Malaysia mainly consists of food waste. As food waste is of organic compounds, its improper management may cause serious environmental issues, as it may produce greenhouse gases and polluting leachate. Alternative management of the food waste is through its utilization. However, the main issue in the utilization of food waste is its heterogeneity, whereby the diversified cooking methods, as well as food origin, emanates different characteristics. Hence, food waste needs to be pre-treated through the torrefaction process, which is a thermochemical method that converts it to biochar at a temperature between 200–300 °C in an inert environment. The main aim of this work is to evaluate the feasibility of food waste as a potential source of energy through the torrefaction process. The torrefaction of food waste was conducted in a vertical tubular reactor under an inert atmosphere. The results obtained from this study showed that as torrefaction temperature became more severe, the produced torrefied solid is more energy-dense, with apparent higher fixed carbon content and improved heating values. These findings imply that food waste may be able to be utilized as a solid biofuel, with fuel properties comparable to conventional fuels.

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“…With the idea of giving a second application to the unused parts of tropical fruits as a source of valuable compounds for industry, research has been developed, and in general options like livestock feeding (Dou, Toth, & Westendorf, 2018), composting (Guidoni et al, 2018), anaerobic digestion (De Clercq, Wen, Gottfried, Schmidt, & Fei, 2017), biofuel production F I G U R E 2 Production, net import and domestic availability (in thousands of tonnes per year) of the main tropical fruits (avocado, mango, papaya and pineapple) in function of the geographic area. The data were derived from FAO (2019) (Rago, Surroop, & Mohee, 2018), and landfilling (Pahla, Ntuli, & Muzenda, 2018) have been studied. At the same time, authors like Lousada Júnior, Correia da Costa, Miranda Neiva, and Rodríguez (2006) explained that the food industry makes huge investments to increase their processing capacity throughout the supply chain, aiming to decrease the generation of byproducts, which in many cases are considered operational cost for companies or source of environmental contamination.…”

Section: Wastes and Byproducts From Tropical Fruits And Their Currentmentioning

confidence: 99%

Valorization of byproducts from tropical fruits: Extraction methodologies, applications, environmental, and economic assessment: A review (Part 1: General overview of the byproducts, traditional biorefinery practices, and possible applications)

Villacís-Chiriboga

Elst

Camp

et al. 2020

Comp Rev Food Sci Food Safe

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Tropical fruits represent one of the most important crops in the world. The continuously growing global market for the main tropical fruits is currently estimated at 84 million tons, of which approximately half is lost or wasted throughout the whole processing chain. Developing novel processes for the conversion of these byproducts into value‐added products could provide a viable way to manage this waste problem, aiming at the same time to create a sustainable economic growth within a bio‐economy perspective. Given the ever‐increasing concern about sustainability, complete valorization through a bio‐refinery approach, that is, zero waste concept, as well as the use of green techniques is therefore of utmost importance. This paper aims to report the status on the valorization of tropical fruit byproducts within a bio‐refinery frame, via the application of traditional methodologies, and with specific attention to the extraction of phenolics and carotenoids as bioactive compounds. The different types of byproducts, and their content of bioactives is reviewed, with a special emphasis on the lesser‐known tropical fruits. Moreover, the bioactivity of the different types of extracts and their possible application as a resource for different sectors (food, pharmaceutical, and environmental sciences) is discussed. Consequently, this review presents the concepts of tropical fruit biorefineries, and the potential applications of the isolated fractions.

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Torrefaction of landfill food waste for possible application in biomass co-firing

Cited by 95 publications

References 27 publications

Fuel Properties of Torrefied Biomass from Pruning of Oxytree

Fuel Properties of Torrefied Biomass from Pruning of Oxytree

Effect of Torrefaction Temperature, Residence Time and Particle Size on the Properties of Torrefied Food Waste

Valorization of byproducts from tropical fruits: Extraction methodologies, applications, environmental, and economic assessment: A review (Part 1: General overview of the byproducts, traditional biorefinery practices, and possible applications)

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