Emergy analysis of oil production from microalgae
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
30/10/2013
30/10/2013
2012
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Resumo |
The use of microalgae and cyanobacteria for the production of biofuels and other raw materials is considered a very promising sustainable technology due to the high areal productivity, potential for CO2 fixation and use of non-arable land. The production of oil by microalgae in a large scale plant was studied using emergy analysis. The joint transformity calculated for the base scenario was 1.32E + 5 sej/J, the oil transformity was 3.51E + 5 sej/J, the emergy yield ratio (EYR) was 1.09 and environmental loading ratio was 11.10 and the emergy sustainability index (ESI) was 0.10, highlighting some of the key challenges for the technology such as high energy consumption during harvesting, raw material consumption and high capital and operation costs. Alternatives scenarios and the sensitivity to process improvements were also assessed, helping prioritize further research based on sustainability impact. (C) 2012 Elsevier Ltd. All rights reserved. |
Identificador |
BIOMASS & BIOENERGY, OXFORD, v. 47, n. 8, supl. 1, Part 3, pp. 418-425, DEC, 2012 0961-9534 http://www.producao.usp.br/handle/BDPI/36702 10.1016/j.biombioe.2012.09.016 |
Idioma(s) |
eng |
Publicador |
PERGAMON-ELSEVIER SCIENCE LTD OXFORD |
Relação |
BIOMASS & BIOENERGY |
Direitos |
closedAccess Copyright PERGAMON-ELSEVIER SCIENCE LTD |
Palavras-Chave | #EMERGY ANALYSIS #MICROALGAE #RENEWABLE FEEDSTOCKS #EMERGY INDICES #SUSTAINABILITY #BIODIESEL #ENERGY #SUSTAINABILITY #BIOFUELS #FUEL #AGRICULTURAL ENGINEERING #BIOTECHNOLOGY & APPLIED MICROBIOLOGY #ENERGY & FUELS |
Tipo |
article original article publishedVersion |