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Bromatological, Proximate and Ultimate Analysis of OFMSW for Different Seasons and Collection Systems

DESTEC—Department of Energy, Systems, Territory and Construction Engineering, University of Pisa, 56122 Pisa, Italy
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Sustainability 2020, 12(7), 2639; https://doi.org/10.3390/su12072639
Received: 8 March 2020 / Revised: 22 March 2020 / Accepted: 24 March 2020 / Published: 26 March 2020
(This article belongs to the Special Issue Municipal Solid Waste Management in a Circular Economy)
In order to study the quality of organic fractions of municipal solid waste (OFMSW), five different municipalities in Tuscany were chosen for sampling according to the peculiarities of their collection systems. The five collection systems selected were sampled four times: during March, June, September and December, for a total of 20 picking analyses. In addition, emphasis was also given to the study of the variability of OFMSW composition related to ultimate, proximate and bromatological analyses. Road container collection systems proved to have a higher content of non-compostable and undesirable fractions (22%±1%) when compared to door-to-door systems (6% ± 1%). During months with lower temperature (March and December), the garden waste content in the OFMSW was negligible, with kitchen waste prevailing. This altered the physical chemical composition of OFMSW, which had a lower lignin content and higher methane production in the months with lower temperatures (272 ± 23 NLCH4 kgTVS−1) compared to June and September (238 ± 14 NLCH4 kgTVS−1). In general, the Tuscan OFMSW had a higher dry matter content (42%) than observed in previous studies. In conclusion, the result could direct possible future operators of anaerobic digestion plants towards the choice of dry and semi-dry technologies. View Full-Text
Keywords: anaerobic digestion; food waste; garden waste; organic waste characteristics; physical–chemical characteristics; methane production anaerobic digestion; food waste; garden waste; organic waste characteristics; physical–chemical characteristics; methane production
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MDPI and ACS Style

Pecorini, I.; Rossi, E.; Iannelli, R. Bromatological, Proximate and Ultimate Analysis of OFMSW for Different Seasons and Collection Systems. Sustainability 2020, 12, 2639.

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