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Logistic analysis of algae cultivation.

P M Slegers¹, S Leduc², R H Wijffels³

¹Biobased Chemistry and Technology, Wageningen University, P.O. Box 17, 6700 AA Wageningen, The Netherlands; Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Box 8129, 6700 EV Wageningen, The Netherlands; International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, Laxenburg A-2361, Austria.

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Summary

Energy needs for transporting water and CO2 in algae cultivation are quantified. While generally low, transport energy

Keywords:

Energy consumption Logistics Quantitative analysis Resources Transport

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Area of Science:

Biotechnology
Sustainable Energy
Agricultural Science

Background:

Energy requirements for resource transport in algae cultivation remain largely unquantified.
Optimizing algae cultivation necessitates understanding the logistical energy costs for water and carbon dioxide (CO2) supply.

Purpose of the Study:

To quantitatively analyze the energy requirements for water and CO2 transport in algae cultivation.
To assess the impact of transport logistics on site selection for algae farms.

Main Methods:

Integrated algae cultivation models with the 'BeWhere' quantitative logistic decision model.
Evaluated energy consumption for resource transport across diverse geographical regions: Benelux, southern France, and the Sahara.

Main Results:

Energy consumed for water and CO2 transport represents a minor fraction (0.1-3.6%) of algae biomass energy in photobioreactors.
Transport energy share is higher in raceway ponds (0.7-38.5%).
The Benelux region shows the lowest transport energy consumption due to optimal water and CO2 availability.

Conclusions:

Despite low energy consumption, transport logistics significantly influence site selection for algae cultivation.
Resource availability, distribution, and transport networks are critical factors for establishing efficient algae farms.