Can duckweed depuration followed by energy recovery by anaerobic co-digestion be a sustainable pig manure management strategy?

Authors

  • Raquel Ratz Instituto Superior de Agronomia, Linking Landscape, Environment, Agriculture and Food, Universidade de Lisboa Portugal
  • Rita Fragoso Instituto Superior de Agronomia, Linking Landscape, Environment, Agriculture and Food, Universidade de Lisboa Portugal
  • Margarida Oliveira Unidade de Investigação do Instituto Politécnico de Santarém, Linking Landscape, Environment, Agriculture and Food, Universidade de Lisboa Portugal
  • Maria Esquível Instituto Superior de Agronomia, Linking Landscape, Environment, Agriculture and Food, Universidade de Lisboa Portugal
  • Elizabeth Duarte Instituto Superior de Agronomia, Linking Landscape, Environment, Agriculture and Food, Universidade de Lisboa Portugal

DOI:

https://doi.org/10.25746/ruiips.v7.i1.18292

Keywords:

Anaerobic co-digestion, bioenergy, effluent treatment, macrophytes, slurry.

Abstract

Pig meat production is a very important economic activity, which has a high environmental impact due to greenhouse gases emissions and the pollution associated with the produced manure. As a way to minimize those impacts, it is important to develop management models based on new technologies both efficient and with a low cost. The anaerobic co-digestion has had an important role as a bioconversion technology, combining the potential of two or more substrates with different characteristics, within the framework of a sustainable bio-energy production. The objective of this study is to evaluate the performance of a treatment/ valorization system for pig slurry in co-digestion with macrophytes as an integrated bioconversion process. In a first step, we intend to study the kinetics of Lemna minor growth on a slurry liquid fraction, rich in macro and micronutrients, in different operating conditions, so as to enhance the accumulation of starch and/or fat. This enriched biomass will be used in a second step, anaerobic co-digestion using various substrates endogenous from a specific region, in order to maximize the production of Bio-CH4. The expected results can serve as a support for the preparation of an analysis of the environmental sustainability of pig production chain.

 

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Published

2019-07-15

How to Cite

Ratz, R., Fragoso, R., Oliveira, M., Esquível, M., & Duarte, E. (2019). Can duckweed depuration followed by energy recovery by anaerobic co-digestion be a sustainable pig manure management strategy?. Revista Da UI_IPSantarém, 7(1), 25–27. https://doi.org/10.25746/ruiips.v7.i1.18292

Issue

Vol. 7 No. 1 (2019): International Congress of the IPSantarém Research Unit - Part I

Section

Papers

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