Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/8291
Título: Depuração de efluente suinícola por Lemna minor e valorização energética da biomassa por co-digestão anaeróbia
Autor: Pena, Luís Miguel Apolónia
Orientador: Oliveira, Maria Margarida da Costa Ferreira Correia de
Fragoso, Rita do Amaral
Palavras-chave: anaerobic co-digestion
biomass production
duckweed
Lemna minor
swine wastewater
Data de Defesa: 2014
Editora: ISA/UL
Citação: Pena, L.M.A. - Depuração de efluente suinícola por Lemna minor e valorização energética da biomassa por co-digestão anaeróbia. Lisboa: ISA, 2014, 55 p.
Resumo: Over the last decades, phytodepuration has been considered an efficient technology to treat agricultural wastewaters. Swine wastewater is rich in nutrients that can be used to grow biomass, producing a treated wastewater that can be used for irrigation and a biomass that may be useful for potential energy production by anaerobic digestion (AD). In this study a comparative polishing treatment assays were developed, at a bench scale, through Lemna minor growth in swine wastewater (4%) with similar concentration at a real scale last lagoon and Lemna minor growth in synthetic medium. The highest observed growth rate obtained in swine wastewater was 28.7 ± 2.3 g m-2 day-1 or 3.1 ± 0.3 gDM m-2 day-1. The highest nitrogen and phosphorus uptake rates in swine wastewater system were 140 mg m-2 day-1 and 3.47 mg m- 2 day-1, respectively. The COD removal efficiency was 60.0 ± 1.0%. Furthermore, an integrated approach was investigated assessing possible valorisation of biomass by anaerobic co-digestion of swine wastewater with Lemna minor. Results showed a clear improvement in gas production rate and methane specific production in 40% and 44%, respectively, when compared to mono-substrate digestion
Descrição: Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/8291
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

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