Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/6784
Título: Co-digestão como solução para a valorização energética de resíduos de fruta e legumes
Autor: Dias, Telmo Ricardo Duarte
Orientador: Fragoso, Rita do Amaral
Duarte, Elizabeth Fernandes de Almeida
Palavras-chave: waste management
fruit and vegetable waste
Rocha pear waste
dairy cattlt slurry
anaerobic co-digestion
Data de Defesa: 2014
Editora: ISA
Citação: Dias, T.R.D. - Co-digestão como solução para a valorização energética de resíduos de fruta e legumes. Lisboa: ISA, 2014, 63 p.
Resumo: There is a need for new strategies for biodegradable municipal waste management, particularly fruit and vegetable wastes, which reduce the accumulation of waste in landfill. Co-digestion of pre-treated dairy cattle slurry (LS) with pear waste after a long storage period (180 days) was investigated. Pear waste liquid fraction (PLF) was tested in co-digestion with LS at four inclusion levels: 0, 25, 75 and 100%, keeping the organic loading rate around 1.1 ± 0.4 g SV L-1 d-1. The effect of substrate type and inclusion level on gas production rate (GPR) and specific methane production (SMP) was evaluated in a completely mixed stirring tank reactor (CSTR), performed at 37  0.5ºC for 126 days. Results showed that progressive increase of PLF percentage as co-substrate improves SMP in comparison to single substrate. On another hand, results showed that storing pear waste for long periods does not compromise AD performance. This is important as pear production is seasonal and storage will simplify the management of this co-substrate. Overall, it can be said that co-digestion of slurry and pear waste seams an interesting approach as a farm scale energy production and waste treatment solution at a regional level.
Descrição: Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/6784
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

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