Life Cycle Assessment of an Innovative Food Waste Management System

Elginöz, Nilay; Khatami, Kasra; Owusu-Agyeman, Isaac; Çetecioğlu, Zeynep

doi:10.3389/fsufs.2020.00023

Cited by 31 publications

(12 citation statements)

References 23 publications

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“…In a scenario where the authors considered the reuse of fermentation sludge as a source of nitrogen within the acidogenic fermentation, global warming potential emissions were reduced by over 60 %, so upscaling this approach has the potential to reduce emissions from food waste. Elginoz et al (2020) proposed an innovative food waste management approach using a homogenization reactor, fermenter, and a centrifuge to convert food waste into volatile fatty acid supernatant; such a system can reduce ozone depletion.…”

Section: Climate Change and (Food) Transportation (And Vice Versa)mentioning

confidence: 99%

An overview of the interactions between food production and climate change

Filho

Setti

Azeiteiro

et al. 2022

Science of The Total Environment

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Section: Climate Change and (Food) Transportation (And Vice Versa)mentioning

confidence: 99%

An overview of the interactions between food production and climate change

Filho

Setti

Azeiteiro

et al. 2022

Science of The Total Environment

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“…Wet AD requires 12% of energy resources during process treatment. The burdens that originate from the AD fermenter are mainly due to heating and energy consumption for stirring and releasing sulphur dioxide (SO2) emissions into the air [33]. The rest is due to electricity consumption in the centrifuge for dewatering [33].…”

Section: Figure 3 Integrated Wet Ad Midpoints Environmental Impact Sc...mentioning

confidence: 99%

“…The burdens that originate from the AD fermenter are mainly due to heating and energy consumption for stirring and releasing sulphur dioxide (SO2) emissions into the air [33]. The rest is due to electricity consumption in the centrifuge for dewatering [33]. In wet AD stages, primary energy demand (PED 1025.92 MJ) was the second-highest compared to overall PED (8620.94 MJ).…”

Section: Figure 3 Integrated Wet Ad Midpoints Environmental Impact Sc...mentioning

confidence: 99%

Environmental impact hotspots of an integrated wet anaerobic digestion through life cycle assessment for food waste management

Abu

Aziz

Hassan

et al. 2022

J. Phys.: Conf. Ser.

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Wet anaerobic digestion (AD) is one of the most widely implemented systems that valorize food waste (FW) for biogas production. Despite the undeniable AD benefits, the environmental impact of AD could differ depending on the biogas systems used. This article examines the hotspots on environmental impact of FW management such as global warming and ozone depletion based on integrated wet AD by utilizing a life cycle assessment approach. The integrated wet AD scenario in this study is a technology that combines wet AD, aerobic windrow composting and a landfill. The scenario modelling was accomplished by applying GaBi v6.0 software with 1 ton of pre-treated FW as a functional unit, and the analysis was based on the ReCiPe (H) v1.07 characterization technique. At the midpoint level, it was observed that the integrated wet AD presented the most significant environmental impact in terms of ionizing radiation (1.4×100 kg U235-eq), followed by water depletion (1.11×103 m3-eq), global warming (6.27×102 kg CO2-eq), fossil depletion (2.18×102 kg oil-eq) and human toxicity (2.89×101 kg 1,4-DB-eq). The disadvantages of the integrated wet AD in global warming were associated with CO2, CH4, and N2O emissions from the energy used for process treatment and fossil fuels during transportation, primarily in landfill activities, followed by wet AD and aerobic windrow composting stages. Regarding single-score indicators, integrated wet AD presented the most resource damaging impact (3.50×103 Pt), mainly due to fossil depletion. This study emphasizes the necessity of reducing the life cycle consequences related to CH4, N2O and NH3 emissions throughout the decomposition process in integrated wet AD, particularly landfill activities.

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“…Food waste (FW) is a global issue that is gaining attention due to its environmental, social, and monetary consequences (Elginoz et al 2020, Brenes-Peralta et al 2020). If the current trends continue, FW in Asian countries is expected to rise rapidly from 2.78 billion tons to 4.16 billion tons by 2025 (Ren et al 2018).…”

Section: Introductionmentioning

confidence: 99%

A Comparative Life Cycle Assessment of Dry and Wet Anaerobic Digestion Technologies for Food Waste Management

Abu¹,

Aziz²,

Hassan³

et al. 2023

jkukm

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Anaerobic digestion (AD) is especially useful in the treatment of organic waste sources, such as food waste (FW) since AD can support the generation of clean energy while preventing the hazards of uncontrolled GHG pollution originating from landfills. However, the potential environmental impacts of dry AD and integrated wet AD treatment are largely unknown, particularly in Malaysia. Thus, this study aimed to compare the potential environmental impacts of four FW treatment technologies in Malaysia: landfill (Sc0), dry anaerobic digestion (Sc1), wet anaerobic digestion combined with windrow composting (Sc2), and wet anaerobic digestion combined with windrow composting and landfill (Sc3). The scenario modelling was performed via GaBi v6.0 software using 1 ton of pre-treated FW as a functional unit, with the analysis of environmental impact scores being based on the ReCiPe (H) v1.07 characterization method. At the midpoint assessment, the Sc1 produced extensive improvements in 12 mid-point impact categories, being the most environmentally favoured FW treatment method compared to the other options in critical categories such as global warming, depletion of fossils and agricultural land occupation. The Sc1 mesophilic conducting reactor in this study used less energy for heating, without generating waste water while requiring a small operating area. Sc3 had the lowest environmental performance since the emissions into the air from windrow composting and landfill were discharged completely without any form of treatment like capturing or flaring. Finally, through the single score analysis, Sc1 was regarded as an appropriate FW treatment technology with the least damaging impact on resource depletion, human health, and ecosystems in comparison to all scenarios. This was accomplished through relatively low power demands for the operation, shorter road transport distances, and a substantial reduction in the amount of waste and electricity generation. These analyses provide a useful framework for understanding the important characteristics of anaerobic treatment despite the divergent challenges faced by the different processes.

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Life Cycle Assessment of an Innovative Food Waste Management System

Cited by 31 publications

References 23 publications

An overview of the interactions between food production and climate change

An overview of the interactions between food production and climate change

Environmental impact hotspots of an integrated wet anaerobic digestion through life cycle assessment for food waste management

A Comparative Life Cycle Assessment of Dry and Wet Anaerobic Digestion Technologies for Food Waste Management

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