Product based evaluation of pyrolysis of food waste and its digestate

Opatokun, Suraj Adebayo; Strezov, Vladimir; Kan, Tao

doi:10.1016/j.energy.2015.02.098

Cited by 116 publications

(46 citation statements)

References 19 publications

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“…The mesophilic AD system generates methane, which is converted to electricity (supplied to the Australian national grid for distribution) and heat through the combined heat and power (CHP) system. Some of the operational data of the AD process may be obtained in the previous studies [13,28], as summarized in Table 1. Part of the generated heat is used for de-watering of the digestate, control of the AD process, and feedstock sterilization when necessary.…”

Section: Anaerobic Digestion Processmentioning

confidence: 99%

“…Details of the energy distribution yield and characterization results of these products produced at industrial pyrolysis temperature (500 • C) were presented previously [13,28]. Heating rate may be defined to influence the choice of products during pyrolysis.…”

Section: Pyrolysis Treatment Processmentioning

confidence: 99%

“…In this study, 1 kg of food waste was established as the functional unit. Details and characteristics of the food waste used in the modelling were described previously [13,28].…”

Section: Scope Of the Analysis And Functional Unitmentioning

confidence: 99%

“…These data were obtained by combination of different sources; mainly from a functional industrial one-stage anaerobic digestion food waste treatment plant in Sydney, laboratory tests, methods, and analysis of samples, as reported previously [13,28], and standardized by the Eco-invent 3.1 database [32]. Material and energy consumption associated with the waste treatment processes involved in the pyrolysis and the proposed integrated management scenarios were obtained from the laboratory experiments [13,28]. Since the industrial scale pyrolysis provides the inert condition simulated by N 2 in the laboratory scale, nitrogen was therefore excluded in the evaluation while maintaining other data obtained through the pyrolysis trials.…”

Section: Life Cycle Inventorymentioning

confidence: 99%

“…Many studies delineated the merits of the liquid (digestate with total solid (TS) range of 0.5 to 15%) and solid (digestate with TS > 15%) residues [9] as bio-fertilizers [10,11]. Recently, energy extraction from digestate using pyrolysis is reported as another sustainable management measure [12,13] to extract energy from this bio-resistant or non-biodegradable organic product of the AD system. The soil enhancement and the other environmental potentials of the biochar (black carbonaceous residue) from the thermochemical process [14,15] are thus exploited.…”

Section: Introductionmentioning

confidence: 99%

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Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

et al. 2017

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Abstract:The environmental performance of industrial anaerobic digestion (AD), pyrolysis, and integrated system (AD sequence with pyrolysis) on food waste treatment were evaluated using life cycle assessment. The integrated treatment system indicated similar environmental benefits to AD with the highest benefits in climate change and water depletion in addition to the increased energy generation potential and the production of valuable products (biochar and bio-oil). Pyrolysis results illustrated higher impact across water, fossil fuel, and mineral depletion, although still providing a better option than conventional landfilling of food waste. The dewatering phase in the AD process accounted for 70% of the treatment impact while the pre-treatment of the food waste was responsible for the main burden in the pyrolysis process. The study indicated that the three treatment options of food waste management are environmentally more favorable than the conventional landfilling of the wastes.

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Section: Anaerobic Digestion Processmentioning

confidence: 99%

Section: Pyrolysis Treatment Processmentioning

confidence: 99%

“…In this study, 1 kg of food waste was established as the functional unit. Details and characteristics of the food waste used in the modelling were described previously [13,28].…”

Section: Scope Of the Analysis And Functional Unitmentioning

confidence: 99%

Section: Life Cycle Inventorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

et al. 2017

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Pyrolysis coupled anaerobic digestion process for food waste and recalcitrant residues: Fundamentals, challenges, and considerations

Giwa

Chang

et al. 2019

Energy Science & Engineering

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Food waste (FW) is a severe environmental problem all over the world, and the recalcitrant organic residues (ROR) from FW treatment plant operations are also a critical environmental issue due to unsustainable treatment and disposal techniques.Requirements for FW and ROR complete exploitation with the establishment of recycling-renewable technologies are very crucial. This paper review AD and pyrolysis as two promising technologies to degrade FW and its residues, creating numerous renewable bioenergy yields with value-added. Existing oil/tar application methods in the AD suffered from various problems such as microorganism toxicity and limited productivity. Future upgrading techniques considering the second-stage pyrolysis process to decompose oil/tars for syngas with high hydrogen content and enhanced bio-methanation in the AD were addressed. Simultaneous pyrolysis by-product recycle in the AD during the valorization of FW are aimed to have the features of sustainability toward increased bioenergy production, reactor efficiency, and agricultural application. K E Y W O R D Sanaerobic digestion, coupling, food waste, pyrolysis, recalcitrant organic residues | 2251 GIWA et Al.

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Syngas production from thermochemical conversion of mixed food waste: A review

Yadav

Katiyar

Mesfer

et al. 2023

WIREs Energy & Environment

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Lately, the generation of leftover food or cooked food waste has turned out to be a critical issue and its disposal in an environmental friendly way has been a challenge. This food waste is being sent for incineration and landfilling which results in a significant contribution to environmental pollution. Therefore, alternative methods for processing food waste in an environmentally benign way have been explored by many researchers. Thermochemical methods are one of those methods and are found to be promising for not only handling the food waste in an ecological way but also producing renewable energy efficiently in the form of bio-oil and syngas along with a solid byproduct, that is, biochar. However, the generation of syngas is favored by only two thermochemical processes, fast pyrolysis, and gasification. Some derived processes such as co-pyrolysis, and co-gasification can also generate syngas. All these

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Product based evaluation of pyrolysis of food waste and its digestate

Cited by 116 publications

References 19 publications

Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

Pyrolysis coupled anaerobic digestion process for food waste and recalcitrant residues: Fundamentals, challenges, and considerations

Syngas production from thermochemical conversion of mixed food waste: A review

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