Rennes, France
Rennes, France

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Adhikari B.K.,UR GERE | Adhikari B.K.,McGill University | Tremier A.,UR GERE | Tremier A.,European University of Brittany | And 4 more authors.
International Journal of Environmental Technology and Management | Year: 2012

Home composting (HC) can produce safe compost if properly managed, while reducing municipal disposal costs. This project investigated the sanitary and safety impact of HC management (with/without bulking agent, batch/weekly feeding, with/without regular mixing) using the Plastic (P) and Wood (W) bins, the Rotary Drum (RD) and the Ground Pile (GP) filled with equal wet volumes of food waste (FW) and yard trimmings (YT). Thermophilic temperatures were obtained only for batch feeding. Mixing the HC compost improved thermophilic temperature duration for W with limited convective aeration, but reduced the duration for P with good convective aeration. Tested only with W and RD, BA reduced the thermophilic period by increasing the compost dry matter from 20% to 40%, lowering the pH from 6.1-7.7 to 5.7, and diluting the biodegradable organic matter. The lowest parasite and pathogen level and odours were obtained in P and GP without BA. © 2012 Inderscience Enterprises Ltd.


Adhikari B.K.,UR GERE | Adhikari B.K.,McGill University | Tremier A.,UR GERE | Tremier A.,European University of Brittany | And 4 more authors.
International Journal of Environmental Technology and Management | Year: 2012

Worldwide, health and environmental considerations encourage landfill diversion of the organic fraction (OW) of municipal solid wastes, through alternative such as home composting. Of poor sanitation, and trace element and toxic hydrocarbon content (PAH) documentation, this study compared against a laboratory composter (LR), the performance (temperature regime and compost quality) of four 300 to 400 L home composting systems (HC), namely the Plastic (P) and Wood (W) Bins, the Rotary Drum (RD) and the Ground Pile (GP). All were batch loaded with the same food waste (FW) and yard trimmings (YT) mixture for uniform testing. The P and GP performed best in terms of temperature regime, followed by W and LR, while all demonstrated similar dry and organic matter and chemical oxygen demand except for RD with a higher dry matter because of poor aeration. All composts respected regulatory pathogen/parasite counts, trace element and PAH levels. © 2012 Inderscience Enterprises Ltd.

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