Biogas production coupled to repeat microalgae cultivation using a closed nutrient loop.
Bioresour Technol
; 263: 625-630, 2018 Sep.
Article
em En
| MEDLINE
| ID: mdl-29800924
ABSTRACT
Anaerobic digestion is an established technology to produce renewable energy as methane-rich biogas for which microalgae are a suitable substrate. Besides biogas production, anaerobic digestion of microalgae generates an effluent rich in nutrients, so-called digestate, that can be used as a growth medium for microalgal cultures, with the potential for a closed nutrient loop and sustainable bioenergy facility. In this study, the methane potential and nutrient mobilization of the microalga Scenedemus dimorphus was evaluated under continuous conditions. The suitability of using the digestate as culture medium was also evaluated. The results show that S. dimorphus is a suitable substrate for anaerobic digestion with an average methane yield of 199â¯mLâ¯g-1 VS. The low level of phosphorus in digestate did not limit algae growth when used as culture medium. The potential of liquid digestate as a superior culture medium rather than inorganic medium was demonstrated.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Biocombustíveis
/
Microalgas
Idioma:
En
Revista:
Bioresour Technol
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Austrália