the macroalgae biorefinery (mab iii) - algecenter danmark

Danish Macro Algae Konference 9-10 Oct. 2013

The macroalgae biorefinery (MAB III) Laminaria for energy, feed and bioremediation

Ditte B. Tørring

Danish Shellfish Centre, Danish Technical University, Aqua Annette Bruhn

Aarhus University, Department of Bioscience


Financed: Danish National Strategic Research Council (2012-2016) Danish Technological Institute Aarhus University, Dep. Of Bioscience Danish Shellfish Centre (DTU – Aqua) DTU (Environment) DTU (Chemical engineering) National University of Ireland, Galway University of Hamburg University of Sienna 5 Danish industrial partners: DONG Energy Orbicon Aller Aqua Vitalys DanGrønt Products

MAB III


MAB III

WP 1: Production of macroalgae Saccharina latissima, Laminaria digitata

WP 2: Pre-treatment Storage stability Enzymatic hydrolysis

WP 3: Energy conversion Ethanol Methane

WP 4: Fish feed Residues from energy production

WP 5: Environmental and economical sustainability


WP 1: Production of macroalgae (Saccharina latissima, Laminaria digitata)

Max yield

Biomass

Low cost Mechanisation of handling

Develope (new) technologies Improve machinery (harvest and deployment)


August - May


Focus: 2012 – 2013 Production of 4 – 10 tonnes macro algae (ww) – total (both Saccharina latissima, Laminaria digitata) Polyculture – seaweed and mussels

http://stederognavne.files.wordpress.com/2012/05/limfjorden.jpg


Seaweed

1 7 7 7 1 1 1 2 1 1 1 1 1 1 3 11 12 12 12 12 13 4 6 6 10 10 11 11 5 1 9 9 8 6 6

Seaweed + mussels

6 7 8 8 DSC DSC DSC DSC 8 9 9 8 8 8 8 6

10 11 1 1 1 1 9 9 12 13 7 7 7 7 1 1 14 15 1 1 1 1 1 1

Increase yield

Several batches – different pretreatments Batch 1 – success! Saccharina Latissima Laminaria digitata failed


Biomass nov. – may 2013

Increase yield

Deployment of lines : September 2012 Harvest: May 2013 Total harvest: 2 tons (drained ww) – 1 kg/meter

Top – bottom Inside - outside


Timing of deployment and harvest Deployment: Batch 1 - september (optimal growth, no biofouling)

Harvest: May (June biofouling: ascidians, mussels, etc)

3 Edwards & Watson, 2011.

Increase yield


Increase yield

Drainage – Transport (what are we loosing??) - Soluble dyes? - Sugars? - Antioxidants? - ? Comparing data -Variations in yield -Standardization needed!


Decrease costs

Harvest by cutting above meristem

300 meters cut and left for harvest in spring 2014


Development of (new) technologies


Production status (MAB III) 3 -18 months

Succesfull implementation of line mussel technology in cultivation

Harvest of 2 tonnes of biomass for pilot-scale trials (energy conversion, upgrading of residues, initial LCA)

Succesfull collection of data from cultivation trials

(Digitata – natural populations)


Focus MAB III (2013-2014) Production of 4 tonnes of macro algae (ww) – total (both Saccharina latissima, Laminaria digitata) Effect of polyculture – seaweed and mussels Avoid contamination in cultures and tanks (sea water) Stronger/different growth lines – (faster harvest, fewer hands) Higher biomass per area (optimization of spray techniques)


Aarhus University: Annette Bruhn Michael Bo Rasmussen Mette Møller Nielsen Peter Schmedes Teis Boderskov

Danish Shellfish Centre: Ditte Tørring Jens Kjerulf Petersen Kristian Oddershede Nielsen Helge Boesen

Thank you!

the macroalgae biorefinery (mab iii) - algecenter danmark

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