Energy demand and carbon footprint of treating household food waste compared to its prevention

Slorach, Peter C.; Jeswani, Harish Kumar; Cuéllar-Franca, Rosa M.; Azapagic, Adisa

doi:10.1016/j.egypro.2019.02.053

Cited by 16 publications

(10 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(Safar et al, 2016), at the same time disposing waste in a more environmentally feasible way (Uçkun Kiran et al, 2014b). Practices like AD recovery (Breitenmoser et al, 2019) significantly reduce CO2 emissions (Prasad, 2016), taking into consideration also the fuel replacement within the power grid (Slorach et al, 2019;Verstraete et al, 2016). FW is also beneficial to polymers production (Uçkun Kiran et al, 2015), from bacteria processing carbon-rich material (Tamis et al, 2015), and as potential feedstock for the production of value added chemicals and for cosmeceutical valorisation (Piccolella et al, 2019).…”

Section: Technological Opportunitiesmentioning

confidence: 99%

“…Food wastage can occur also because of problematic relationships between producers and retailers (Eriksson et al, 2017) and because of food standards, contractual conditions and wrong product forecasting (Girotto et al, 2015). Also, the household level plays a crucial role in FW generation (Slorach et al, 2019). In this context, FW mainly occurs due to bad management (Breitenmoser et al, 2019), in varying forms from whole materials to fractions or mixtures (Uçkun Kiran et al, 2014a).…”

Section: Cultural Challengesmentioning

confidence: 99%

See 1 more Smart Citation

Food waste recovery pathways: Challenges and opportunities for an emerging bio-based circular economy. A systematic review and an assessment

Santagata

Ripa

Genovese

et al. 2021

Journal of Cleaner Production

140

View full text Add to dashboard Cite

Section: Technological Opportunitiesmentioning

confidence: 99%

Section: Cultural Challengesmentioning

confidence: 99%

Food waste recovery pathways: Challenges and opportunities for an emerging bio-based circular economy. A systematic review and an assessment

Santagata

Ripa

Genovese

et al. 2021

Journal of Cleaner Production

140

View full text Add to dashboard Cite

“…Previous estimations show that food waste, including organic waste and packaging, contributes almost 7% of global carbon footprint that is an environmental impact indicator. Therefore, recycling of food waste or zero‐waste approach may be a good method to mitigate environmental impact and energy loss in food processing (Eriksson & Spångberg, 2017; Oldfield et al, 2016; Slorach et al, 2019). Pomace is a great example of biodegradable and valued food industry waste.…”

Section: Introductionmentioning

confidence: 99%

Analysis of selected functional properties, resource demands, and energy consumption of freeze‐dried vegetable snacks

Karwacka

Rybak

Sergiy

et al. 2022

Food Processing Preservation

View full text Add to dashboard Cite

The study aimed to investigate a possibility of using fruits (apple and blackcurrant) pomace as carrier agents in freeze‐dried snacks and analyze selected properties of obtained products in comparison to snacks with addition of pectin as traditional carrier in terms of physical and functional characteristics modification. The addition of fruits pomace powders caused significant porosity and hygroscopicity reduction. The type of carrier also affected color and structure of the freeze‐dried snacks. Moreover, applied additives influenced textural properties inducing products with fruits pomace powders brittle and more fragile in comparison to material with pectin. Reformulation did not affect energy consumption that was determined mostly by freeze drying (90%), but replacement of hydrocolloid with fruit pomace powders may reduce environmental impact of freeze‐dried products. Considering obtained findings and possibilities resulting from application of pomace in new food products, further research is needed, especially in terms of influencing nutritional value and storage properties by such additives. Novelty impact statement The manuscript is focused on the newest approach in food technology related to management of food waste and by‐products as additives modifying properties of freeze‐dried materials. Our study included examination of the impact of fruits pomace powders as carrier agents in freeze‐dried fruit and vegetable snacks in relation to traditional hydrocolloid carrier on selected properties that are important in terms of stability and attractiveness of food products. Second part of the study was assessment of resource demand of manufacturing such products aimed on the possibilities of environmental impact reduction.

show abstract

“…These embodied emissions are not accounted for when analyzing food waste as a fuel stream for WTE, which simply shifts this GHG burden to another sector. Additionally, purely biogenic waste is eligible for pyrolysis and anaerobic digestion as alternative waste management options that generate energy and possibly with a lower life cycle climate change impact. ,, …”

Section: Discussionmentioning

confidence: 99%

“…Additionally, purely biogenic waste is eligible for pyrolysis and anaerobic digestion as alternative waste management options that generate energy and possibly with a lower life cycle climate change impact. 22,53,54 System expansion to account for the alternative of landfilling MSW suggests that there may be a climate change benefit to WTE as a waste management practice that also generates electricity by crediting the system for relative GHG emissions avoided. However, as a method of electricity generation alone, without considering the fuel source as an inevitable nuisance that must be managed, the GHG emissions of WTE-sourced electricity are an order of magnitude larger than any other renewable electricity resource examined for comparison.…”

Section: Discussionmentioning

confidence: 99%

Climate Change Impacts of Electricity Generated at a Waste-to-Energy Facility

Pfadt-Trilling

Volk

Fortier

2021

Environ. Sci. Technol.

View full text Add to dashboard Cite

Waste-to-energy (WTE) facilities combust both biogenic and nonbiogenic materials comprising municipal solid waste (MSW) in addition to managing waste, leading to a lack of clarity on the life cycle climate change impact (LCCCI) as an electricity generator. In order to investigate the LCCCI of this resource, a cradle-to-gate life cycle assessment (LCA) of a WTE facility in Jamesville, NY, was performed utilizing system expansion to account for avoided landfilling emissions, additional metals recycling, and the loss of potential electricity generation from landfill gas. The LCCCI of electricity from this WTE facility ranges from 0.664 to 0.951 kg CO2eq/kWh before system expansion, which reduced the impact to −0.280 to 0.593 kg CO2eq/kWh when accounting for avoided waste management emissions. Combustion is the leading contributor of GHG emissions from cradle-to-gate, and sensitivity analysis indicates that the nonbiogenic fraction of the waste most significantly influences the LCCCI before including cobenefits. The fraction of methane from landfills that is not captured is the most influential variable under system expansion. Before system expansion, the LCCCI of this system is comparable to that of electricity from fossil fuels. With system expansion, the LCCCI ranges from below that of renewable energy to comparable to natural gas based electricity. These results disagree with claims in the reviewed literature that WTE can avoid GHG emissions overall, although avoided emissions reduce the magnitude of its impact.

show abstract

Energy demand and carbon footprint of treating household food waste compared to its prevention

Cited by 16 publications

References 13 publications

Food waste recovery pathways: Challenges and opportunities for an emerging bio-based circular economy. A systematic review and an assessment

Food waste recovery pathways: Challenges and opportunities for an emerging bio-based circular economy. A systematic review and an assessment

Analysis of selected functional properties, resource demands, and energy consumption of freeze‐dried vegetable snacks

Climate Change Impacts of Electricity Generated at a Waste-to-Energy Facility

Contact Info

Product

Resources

About