The environmental sustainability of microalgae as feed for aquaculture: A life cycle perspective

被引：70

作者：

Taelman, S. E. ^{[1
]}

De Meester, S. ^{[1
]}

Roef, L. ^{[2
]}

Michiels, M. ^{[2
]}

Dewulf, J. ^{[1
]}

机构：

[1] Univ Ghent, Fac Biosci Engn, Envoc Res Grp, B-9000 Ghent, Belgium

[2] Proviron Holding Nv, B-2620 Hemiksem, Belgium

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 150卷

关键词：

Microalgae; (Exergetic) life cycle assessment; Resource footprint; Carbon footprint; Aquaculture; BIODIESEL PRODUCTION; EXERGY; ALGAE; DATABASE;

D O I：

10.1016/j.biortech.2013.08.044

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The environmental sustainability of microalgae production for aquaculture purposes was analyzed using exergy analysis (EA) and life cycle assessment (LCA). A production process (pilot 2012, 240 m(2)) was assessed and compared with two upscaling scenarios (pilot 2013, 1320 m(2) and first production scale 2015, 2,5 ha). The EA at process level revealed that drying and cultivation had the lowest efficiencies. The LCA showed an improvement in resource efficiency after upscaling: 55.5 MJ(ex,CEENE)/MJ(ex) DW biomass was extracted from nature in 2012, which was reduced to 21.6 and 2.46 MJ(ex,CEENE)/MJ(ex) DW in the hypothetical 2013 and 2015 scenarios, respectively. Upscaling caused the carbon footprint to decline by factor 20 (0.09 kg CO2,eq/MJ(ex) DW in 2015). In the upscaling scenarios, microalgae production for aquaculture purposes appeared to be more sustainable in resource use than a reference fish feed (7.70 MJ(ex,CEENE) and 0.05 kg CO2,eq per MJ(ex) DW). (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：513 / 522

页数：10

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