Comparison of global-warming potential impact of food waste fermentation to landfill disposal

Anaerobic digestion technology is a widely used technology for food waste treatment. It can produce clean fuel gas and realize harmless treatment of waste. Different ways of utilizing the digestion products vary depending on the market demand and production technology. In this paper, life cycle assessment (LCA) was conducted to analyse the environmental impacts of different processes in food waste anaerobic digestion treatment and compare different utilization strategies of digestion products especially the digestate. The results of this study indicated that the incineration of digestate had advantages in most environmental impacts except global warming potential (GWP), compared with composting as fertilizers. Besides that, incineration had the lower energy efficiency due to drying heat demand. The high energy conversion efficiency of internal combustion engine contributed much to reducing environmental impacts. It’s worth mentioning that the sufficient combustion performance of micro-turbine resulted in smaller global warming potential (GWP) and eutrophication potential (EP).

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Global warming potential impact of bioenergy systems

EPJ Web of Conferences ◽

10.1051/epjconf/20123301009 ◽

2012 ◽

Vol 33 ◽

pp. 01009

Author(s):

D. Tonini ◽

L. Hamelin ◽

H. Wenzel ◽

T. Astrup

Keyword(s):

Global Warming ◽

Global Warming Potential ◽

Potential Impact ◽

Bioenergy Systems

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Importance of food waste pre-treatment efficiency for global warming potential in life cycle assessment of anaerobic digestion systems

Resources Conservation and Recycling ◽

10.1016/j.resconrec.2015.06.012 ◽

2015 ◽

Vol 102 ◽

pp. 58-66 ◽

Cited By ~ 23

Author(s):

My Carlsson ◽

Irina Naroznova ◽

Jacob Møller ◽

Charlotte Scheutz ◽

Anders Lagerkvist

Keyword(s):

Global Warming ◽

Life Cycle Assessment ◽

Life Cycle ◽

Anaerobic Digestion ◽

Food Waste ◽

Global Warming Potential ◽

Treatment Efficiency ◽

Pre Treatment

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Upcycling food waste using black soldier fly larvae: Effects of further composting on frass quality, fertilising effect and its global warming potential

Journal of Cleaner Production ◽

10.1016/j.jclepro.2020.125664 ◽

2021 ◽

Vol 288 ◽

pp. 125664

Author(s):

Shuang Song ◽

Alvin Wei Liang Ee ◽

Jonathan Koon Ngee Tan ◽

Jia Chin Cheong ◽

Zhongyu Chiam ◽

...

Keyword(s):

Global Warming ◽

Food Waste ◽

Global Warming Potential ◽

Black Soldier Fly ◽

Black Soldier Fly Larvae ◽

Fly Larvae

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Household food waste in Serbia – Attitudes, quantities and global warming potential

Journal of Cleaner Production ◽

10.1016/j.jclepro.2019.04.400 ◽

2019 ◽

Vol 229 ◽

pp. 44-52 ◽

Cited By ~ 20

Author(s):

Ilija Djekic ◽

Zorana Miloradovic ◽

Sofija Djekic ◽

Igor Tomasevic

Keyword(s):

Global Warming ◽

Food Waste ◽

Global Warming Potential ◽

Household Food

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Decision-Making Process in the Circular Economy: A Case Study on University Food Waste-to-Energy Actions in Latin America

Energies ◽

10.3390/en13092291 ◽

2020 ◽

Vol 13 (9) ◽

pp. 2291

Author(s):

Laura Brenes-Peralta ◽

María F. Jiménez-Morales ◽

Rooel Campos-Rodríguez ◽

Fabio De Menna ◽

Matteo Vittuari

Keyword(s):

Decision Making ◽

Global Warming ◽

Anaerobic Digestion ◽

Food Waste ◽

Global Warming Potential ◽

Waste To Energy ◽

Life Cycle Thinking ◽

Analytic Hierarchy ◽

Trade Offs

Economies have begun to shift from linear to circular, adopting, among others, waste-to-energy approaches. Waste management is known to be a paramount challenge, and food waste (FW) in particular, has gained the interest of several actors due to its potential impacts and energy recovery opportunities. However, the selection of alternative valorization scenarios can pose several queries in certain contexts. This paper evaluates four FW valorization scenarios based on anaerobic digestion and composting, in comparison to landfilling, by applying a consistent decision-making framework through a combination of linear programming, Life Cycle Thinking (LCT), and Analytic Hierarchy Process (AHP). The evaluation was built upon a case study of five universities in Costa Rica and portrayed the trade-offs between environmental impacts and cost categories from the scenarios and their side flows. Results indicate that the landfill scenario entails higher Global Warming Potential and Fresh Water Eutrophication impacts than the valorization scenarios; however, other impact categories and costs are affected. Centralized recovery facilities can increase the Global Warming Potential and the Land Use compared to semi-centralized ones. Experts provided insights, regarding the ease of adoption of composting, in contrast to the potential of energy sources substitution and economic savings from anaerobic digestion.

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Quantifying global warming potential of alternative biorefinery systems for producing fuels from Chinese food waste

Waste Management ◽

10.1016/j.wasman.2021.05.004 ◽

2021 ◽

Vol 130 ◽

pp. 38-47

Author(s):

Hanwen Guo ◽

Yan Zhao ◽

Anders Damgaard ◽

Qian Wang ◽

Hongtao Wang ◽

...

Keyword(s):

Global Warming ◽

Food Waste ◽

Global Warming Potential ◽

Chinese Food

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COMPARISON OF GLOBAL WARMING POTENTIAL-IMPACT ON THE HANDLING OF THE HAZARDOUS-SLUDGE FROM THE CENTRALIZED INDUSTRIAL-WASTEWATER TREATMENT PLANT

INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY ◽

10.25105/urbanenvirotech.v3i1.5530 ◽

2019 ◽

Vol 3 (1) ◽

pp. 84

Author(s):

Rijal Hakiki ◽

Maryani Paramita Astuti ◽

Temmy Wikaningrum

Keyword(s):

Global Warming ◽

Global Warming Potential ◽

Treatment Plant ◽

Impact Category ◽

Secondary Data ◽

Actual Condition ◽

Inventory Analysis ◽

Mass Balance Calculation ◽

Potential Impact ◽

The Impact

Aims: This study was aimed to compare the secured landfill method and thermally sludge treatment through gasification, to find out the environmental impacts that will result from both treatments. Methodology and results: The study was carried out using the “gate-to-gate LCA method”. In its implementation, limits and assumptions have been determined as an approach to the actual condition. Some of the data used include the experimental data, theoretical mass balance calculation and secondary data obtained from previous research. The study was carried out utilizing the open-source openLCA software. The four-phase in the LCA include goal and scope definition, inventory analysis, impact assessment, and data interpretation. The simulation shows that the implementation of the thermal gasification process can reduce the emission released to the atmosphere by reducing hazardous sludge volume to be transported directly to the secured landfill. Conclusion, significance and impact study: Referring to the simulation results using openLCA software, with several assumptions and adjustments made, in the scope of the study that has been determined. It can be concluded that the thermal (gasification) treatment of hazardous sludge can be studied further in connection with its implementation at the treatment plant. It is indicated by the acquisition of global warming potential impact category of 673 kg CO2 eq (for direct disposal to secured landfill) reduced around 424 kg CO2 eq (for the implementation of thermal treatment). Or in other words, there is a reduction in the magnitude of the impact to around 37%.

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Composting Process and Gas Emissions during Food Waste Composting under the Effect of Different Additives

Sustainability ◽

10.3390/su12187811 ◽

2020 ◽

Vol 12 (18) ◽

pp. 7811 ◽

Cited By ~ 1

Author(s):

Hyun Young Hwang ◽

Seong Heon Kim ◽

Jaehong Shim ◽

Seong Jin Park

Keyword(s):

Global Warming ◽

Food Waste ◽

Global Warming Potential ◽

Ghg Emissions ◽

Control Treatment ◽

Gas Emissions ◽

Global Warming Impact ◽

Composting Process ◽

Mature Compost ◽

Higher Temperature

This study investigated the effects of adding mature compost (MC) and vermicompost (VC) on controlling gas emissions and compost quality during food waste (FW) composting. In addition to a control treatment (only food waste), four treatments were designed to mix the initial FW with varying rates of MC and VC (5.0% and 7.5%). The composting process was monitored for 84 days. Results indicate that the addition of MC and VC resulted in higher temperature, prolonged the thermophilic stage and reduced NH3 and greenhouse gas (GHG) emissions. Compared to the control, the loss of NH3-N was decreased by 29–69%, and the global warming impact was also mitigated by 49–61%. The largest reductions in NH3 and global warming potential (GWP) were found for 7.5% VC and 5% MC, respectively. The treatments with additives more rapidly achieved the required maturity value. This research suggests that the addition of 7.5% MC and VC is suitable for food waste composting.

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