Food waste valorization through composting and bio-drying for small scale fruit processing agro-industries
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Agri-food industries entail a relevant economic activity, with major opportunities to improve food security, the economy, and the environmental performance of food systems. However, those opportunities can be challenged by Food Waste (FW), since estimates suggest that 55% of certain groups of food products, such as fruits and vegetables are lost or wasted along the food supply chain. The Latin American and Caribbean region is one of the most relevant in the world supply of fruits, based in a high number of small-scale farmers and agri-processors. Strategies that aid in better management of FW consider the recovery and recycling of still valuable materials from the waste. In consequence, this study focused on comparing technical parameters of four biowaste treatments, to valorize the FW that is originated by small fruit-processing agroindustry in the Latin American country of Costa Rica. The main results indicate that the Takakura-type composting method in tumblers presents appropriate technical conditions to valorize this type of FW, due to the obtention of compost for potential use in agricultural or gardening. The bio-drying alternative will aid in case the treated waste needs to be stored or transported for further uses or disposal since it is a stabilized material, hence less weight, and humidity content, and potentially fewer emissions are expected.
However, the observed conditions of this study, indicate it is not advisable to use this later directly as a soil amendment since the temperatures reached during the experiment might not assure the inactivation of possibly present pathogens.
Agri-food industries entail a relevant economic activity, with major opportunities to improve food security, the economy, and the environmental performance of food systems. However, those opportunities can be challenged by Food Waste (FW), since estimates suggest that 55% of certain groups of food products, such as fruits and vegetables are lost or wasted along the food supply chain. The Latin American and Caribbean region is one of the most relevant in the world supply of fruits, based in a high number of small-scale farmers and agri-processors. Strategies that aid in better management of FW consider the recovery and recycling of still valuable materials from the waste. In consequence, this study focused on comparing technical parameters of four biowaste treatments, to valorize the FW that is originated by small fruit-processing agroindustry in the Latin American country of Costa Rica. The main results indicate that the Takakura-type composting method in tumblers presents appropriate technical conditions to valorize this type of FW, due to the obtention of compost for potential use in agricultural or gardening. The bio-drying alternative will aid in case the treated waste needs to be stored or transported for further uses or disposal since it is a stabilized material, hence less weight, and humidity content, and potentially fewer emissions are expected. However, the observed conditions of this study, indicate it is not advisable to use this later directly as a soil amendment since the temperatures reached during the experiment might not assure the inactivation of possibly present pathogens.
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Accepted 2020-09-17
Published 2021-01-15
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