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
Danish Macro Algae Konference 9-10 Oct. 2013
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
Danish Macro Algae Konference 9-10 Oct. 2013
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
Danish Macro Algae Konference 9-10 Oct. 2013
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)
Danish Macro Algae Konference 9-10 Oct. 2013
August - May
Danish Macro Algae Konference 9-10 Oct. 2013
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
Danish Macro Algae Konference 9-10 Oct. 2013
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
Danish Macro Algae Konference 9-10 Oct. 2013
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
Danish Macro Algae Konference 9-10 Oct. 2013
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
Danish Macro Algae Konference 9-10 Oct. 2013
Increase yield
Drainage – Transport (what are we loosing??) - Soluble dyes? - Sugars? - Antioxidants? - ? Comparing data -Variations in yield -Standardization needed!
Danish Macro Algae Konference 9-10 Oct. 2013
Decrease costs
Harvest by cutting above meristem
300 meters cut and left for harvest in spring 2014
Danish Macro Algae Konference 9-10 Oct. 2013
Development of (new) technologies
Danish Macro Algae Konference 9-10 Oct. 2013
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)
Danish Macro Algae Konference 9-10 Oct. 2013
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)
Danish Macro Algae Konference 9-10 Oct. 2013
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!
