PODERÁ UM SISTEMA DE TRATAMENTO INTEGRADO - LEMNA E CO-DIGESTÃO ANAERÓBIA - CONSTITUIR UMA ESTRATÉGIA SUSTENTÁVEL PARA A GESTÃO DO CHORUME DE PORCO?

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 codigestion 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. [ABSTRACT FROM AUTHOR]