Valorization of animal waste from aquaculture through composting: Nutrient recovery and nitrogen mineralization

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Data

2021-01-30

Autores

Lopes, Ivã Guidini [UNESP]
Braos, Lucas Boscov [UNESP]
Cruz, Mara Cristina Pessôa [UNESP]
Vidotti, Rose Meire [UNESP]

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Resumo

Aquaculture production has been exponentially growing worldwide, which reflects in the generation of increasing amounts of waste materials. When poorly managed or disposed inadequately, aquaculture-derived wastes can compose social, economic and environmental issues. In this study, windrow composting was evaluated as a means of increasing the activity's sustainability through waste management, aiming to demonstrate a way of achieving circularity. For this purpose, four fish waste-based composts produced in an aquaculture research center were chemically evaluated and tested as soil amendment. The results indicated that harnessing wastes from aquaculture production is a valid and simple path to achieve circularity, as it is possible to convert waste into valuable, nutrient-rich composts that can be reintroduced in new productive processes, such as agriculture, in replacement of chemical fertilizers.

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Palavras-chave

Agriculture, Circular economy, Crop, Fish waste, Soil fertility, Sustainability

Como citar

Aquaculture, v. 531.