Electricity Production from Anaerobic Digestion of Household Organic Waste in Ontario: Techno-Economic and GHG Emission Analyses

Sanscartier, David; MacLean, Heather L.; Saville, Bradley A.

doi:10.1021/es2016268

Cited by 60 publications

(32 citation statements)

References 29 publications

(90 reference statements)

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“…Energy production from food waste Food waste has the potential to be converted to a useful energy resource in the form of biogas, with many cities already collecting source-separated organics for processing in local anaerobic digesters (Uçkun Kiran et al 2014, Sanscartier et al 2012, Mohareb et al 2011, Bernstad and la Cour Jansen 2011. Following the potential for circular resource use suggested by Metson et al (2012), the proximity of increased urban food waste from both production as well as further down the food supply chain could provide a greater feedstock for co-located urban anaerobic digestion (AD) systems.…”

Section: Exploiting Urban Resources For Local Agriculturementioning

confidence: 99%

Considerations for reducing food system energy demand while scaling up urban agriculture

Mohareb

Heller

Novak

et al. 2017

Environ. Res. Lett.

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There is an increasing global interest in scaling up urban agriculture (UA) in its various forms, from private gardens to sophisticated commercial operations. Much of this interest is in the spirit of environmental protection, with reduced waste and transportation energy highlighted as some of the proposed benefits of UA; however, explicit consideration of energy and resource requirements needs to be made in order to realize these anticipated environmental benefits. A literature review is undertaken here to provide new insight into the energy implications of scaling up UA in cities in high-income countries, considering UA classification, direct/indirect energy pressures, and interactions with other components of the food-energy-water nexus. This is followed by an exploration of ways in which these cities can plan for the exploitation of waste flows for resource-efficient UA.Given that it is estimated that the food system contributes nearly 15% of total US energy demand, optimization of resource use in food production, distribution, consumption, and waste systems may have a significant energy impact. There are limited data available that quantify resource demand implications directly associated with UA systems, highlighting that the literature is not yet sufficiently robust to make universal claims on benefits. This letter explores energy demand from conventional resource inputs, various production systems, water/energy trade-offs, alternative irrigation, packaging materials, and transportation/supply chains to shed light on UA-focused research needs.By analyzing data and cases from the existing literature, we propose that gains in energy efficiency could be realized through the co-location of UA operations with waste streams (e.g. heat, CO 2 , greywater, wastewater, compost), potentially increasing yields and offsetting life cycle energy demands relative to conventional approaches. This begs a number of energy-focused UA research questions that explore the opportunities for integrating the variety of UA structures and technologies, so that they are better able to exploit these urban waste flows and achieve whole-system reductions in energy demand. Any planning approach to implement these must, as always, assess how context will influence the viability and value added from the promotion of UA.

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Section: Exploiting Urban Resources For Local Agriculturementioning

confidence: 99%

Considerations for reducing food system energy demand while scaling up urban agriculture

Mohareb

Heller

Novak

et al. 2017

Environ. Res. Lett.

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“…The tipping fee is around 100 USD/ton for organic wastes, which can save 2.2 million USD annually for the MSW produced in Borås, Sweden. [26,27] When the price of the MSW was increased from 0 USD/kg to +100 USD/ton in the base case (scenario 1), the PBP increased to 13.8 years from 10.04 years suggesting that the plant would only yield profit during the last six years of operation ( Figure 6). …”

Section: Effect Of Msw Price On Different Scenariosmentioning

confidence: 99%

“…Since 2006, landfilling of organic wastes is banned in Sweden; thus, if organic wastes are landfilled, a gate fee to get rid of waste has to be paid, which is about 100 USD/ton. [26,27] The sensitivity analysis revealed that the cost for the collection and transportation is a crucial factor in the profitability of the plant. Furthermore, increasing the plant capacity resulted in a higher NPV.…”

Section: Paradigms Of Uncertaintymentioning

confidence: 99%

Uncertainty over techno-economic potentials of biogas from municipal solid waste (MSW): A case study on an industrial process

et al. 2014

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In this study, biogas production from the organic fraction of the MSW (OMSW) was simulated in six different scenarios, using Aspen plus ® based on industrial data. The economic evaluations were made using the Aspen process economic analyzer, considering the plant size and the upgrading methods. The base case had an annual processing capacity of 55,000 m 3 OMSW. The capital costs and the net present value (NPV) after 20 years of operation were 34.6 and 27.2 million USD, respectively. The base case was compared to the modified scenarios, which had different upgrading methods, processing capacities, addition of biogas from wastewater sludge treatment, and variation of the substrate (OMSW) between ±200 USD/ton. The sensitivity analyses were carried out considering the cost of the OMSW imposed on citizens for collection and transportation of wastes and the different sizes of the plant. The result suggests that producing biogas and selling it, as a vehicle fuel from OMSW is a profitable venture in most scenarios. However, there are some uncertainties, including the collection and transportation costs, landfilling fee, and process operation at lower capacities, which affect its profitability.

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“…According to the life cycle analysis (LCA), AD results in negative GHG emissions. The total greenhouse gas (GHG) emissions for AD can reduce up to one tonne CO 2 equivalent/ Mg separated organic waste [5]. Actually, many studies have been conducted to show the benefits of AD treatment, for instance the works of [2, 4, 6 and 7].…”

Section: Introductionmentioning

confidence: 99%

Greenhouse Gas Emissions From Anaerobic Digestion Plants

Phong¹

2018

JST

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This study investigated emissions of CH 4 , N 2 O and NH 3 from nine anaerobic digestion plants that treat biowaste. The treatment is in form of mechanical pre-treatment, anaerobic digestion followed by a composting with or without intensive aeration. The exhaust gases from the mechanical and anaerobic steps are treated by biofilters. The emission sources at the plants consisted of biofilters, combined heat and power units (

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Electricity Production from Anaerobic Digestion of Household Organic Waste in Ontario: Techno-Economic and GHG Emission Analyses

Cited by 60 publications

References 29 publications

Considerations for reducing food system energy demand while scaling up urban agriculture

Considerations for reducing food system energy demand while scaling up urban agriculture

Uncertainty over techno-economic potentials of biogas from municipal solid waste (MSW): A case study on an industrial process

Greenhouse Gas Emissions From Anaerobic Digestion Plants

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