Comparison of Algal Biodiesel Production Pathways Using Life Cycle Assessment Tool

Chapter
Part of the Green Energy and Technology book series (GREEN)

Abstract

The consideration of algal biomass in biodiesel production increased very rapidly in the last decade. A life cycle assessment (LCA) study is presented to compare six different biodiesel production pathways (three different harvesting techniques, i.e., aluminum as flocculent, lime flocculent, and centrifugation, and two different oil extraction methods, i.e., supercritical CO2 (sCO2) and press and co-solvent extraction). The cultivation of Nannochloropsis sp. considered in a flat-panel photobioreactor (FPPBR). These algal biodiesel production systems were compared with the conventional diesel in a EURO 5 passenger car used for transport purpose (functional unit 1 person km (pkm). The algal biodiesel production systems provide lesser impact (22–105 %) in comparison with conventional diesel. Impacts of algal biodiesel on climate change were far better than conventional diesel, but impacts on human health, ecosystem quality, and resources were higher than the conventional diesel. This study recommends more practical data at pilot-scale production plant with maximum utilization of by-products generated during the production to produce a sustainable algal biodiesel.

Keywords

Biomass Phosphorus Magnesium Petroleum Transportation 

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Copyright information

© Springer-Verlag London 2013

Authors and Affiliations

  1. 1.Department of Scientific and Industrial Research (DSIR)Ministry of Science and Technology, Technology BhawanNew DelhiIndia

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