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Conference papers

Greenhouse gas and sanitary issues for onsite treatment of urban organic waste

Abstract : Urban organic waste (UOW) represents one of the major components of the municipal solid waste (MSW) mainstream. Being the most biologically active fraction and once landfilled, UOW generates greenhouse gases contributing to global warming. Considering such environmental issue, the European Union has set a diversion goal of 65 % for the biodegradable fraction of MSW by 2016. Since modern centralized organic waste treatment systems have an important economic impact even on developed countries, more practical but just as safe solutions are needed. In this context, the onsite composting of food and yard trimmings using home systems (HC) can divert from landfills significant amounts of urban organic wastes. However, few studies pertain to the environmental and sanitary issues resulting from such practice. The aim of this study was to quantify the greenhouse gas (CO2, N2O and CH4) emissions and the pathogen and parasite content of the matured compost produced by HC. This study selected three of the most popular HC with a useful capacity of 320 L: slatted plastic bin; slatted wooden bin, and; ground pile. Each compost system received 60 kg of mixed food waste and yard trimmings. The gaseous emissions from each HC were measured using a closed hood and analysed by gas chromatography (GC). The composts were mixed weekly and sampled for analysis on days 0, 15, 30 and 150. During the active composting phase, the highest CO2 emissions were produced during the thermophilic period from all three HC while the maximum N2O emissions were observed after the mesophilic period. The CH4 emissions were too limited to be measured by gas chromatography. After 150 days of composting, the mature product offered parasite and pathogen levels within standard limits accepted France and North America.
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Conference papers
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https://hal.inrae.fr/hal-02594428
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Submitted on : Friday, May 15, 2020 - 6:35:41 PM
Last modification on : Thursday, August 26, 2021 - 1:22:01 PM

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  • HAL Id : hal-02594428, version 1
  • IRSTEA : PUB00030887

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B. Adhikari, A. Trémier, José Martinez, S. Barrington. Greenhouse gas and sanitary issues for onsite treatment of urban organic waste. International conference ORBIT, Jun 2010, Heraklion, Greece. pp.8. ⟨hal-02594428⟩

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