Data/hora: 07/06/2024 06:37:52

Biblioteca(s): | Embrapa Soja; Embrapa Suínos e Aves.
Data corrente: | 15/12/2016
Data da última atualização: | 18/07/2019
Autoria: | PERAZZOLI, S.; BRUCHEZ, B. M.; MICHELON, W.; STEINMETZ, R. L. R.; MEZZARI, M. P.; NUNES, E. de O.; SILVA, M. L. B. da.
Afiliação: | SIMONE PERAZZOLI, UFSC/Departamento de Engenharia Química; BRUNA M. BRUCHEZ, UNOESC; WILLIAM MICHELON, UFSC/Departamento de Engenharia Química; RICARDO LUIS RADIS STEINMETZ, CNPSA; MELISSA PAOLA MEZZARI, UNOESC; ESTELA DE OLIVEIRA NUNES, CNPSO; MARCIO LUIS BUSI DA SILVA, CNPSA.
Título: | Optimizing biomethane production from anaerobic degradation of Scenedesmus spp. biomass harvested from algae-based swine digestate treatment.
Ano de publicação: | 2016
Fonte/Imprenta: | International Biodeterioration & Biodegradation, v. 109, p. 23-28, Apr. 2016.

Idioma:

Inglês
Português

Conteúdo: | The objective of this work was to quantify biomethane from anaerobic degradation of microalgae biomass harvested from a field-scale tank reactor simulating phycoremediation of swine wastewater. The effects of nutrients starvation on microalgae chemical cellular composition changes and its influence on biomethane generation potential were also addressed. Microalgae polyculture was dominated by uncultured Scenedesmus clone BF 063 which showed a carbohydrate, protein and lipid content of 27.6 ± 3.3, 57.6 ± 0.1 and 3.9 ± 0.6%, respectively. After 25 days exposed to N- and P-free medium, microalgae biomass composition showed 54.6 ± 2.6, 24.1 ± 2.4 and 16.9 ± 0.8% of carbohydrate, protein and lipid, respectively. Volatile solids concentration in the biomass harvested from N- and P-rich medium was lower [67 ± 1.7 g VS (kg biomass)?1] than biomass harvested from nutrient depleted medium [204.1 ± 3.1 g VS (kg biomass)?1]. Consequently, much higher biomethane production was obtained i.e., 103.5 LN CH4 (kg biomass)?1 vs 44 LN CH4 (kg biomass)?1. The results suggest that biomethane production in digesters could be improved by integrating microalgae biomass harvested from algae-based swine wastewater digestate treatment.
Palavras-Chave: | Biometano; Resíduo de suíno.
Thesagro: | Águas residuais; Diagnóstico; Microalga.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/164127/1/final8083.pdf
Registro original: | Embrapa Suínos e Aves (CNPSA)

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