Cultivating ocean seaweed using advanced textiles

Europe’s first trials of seaweed cultivation in the open ocean using advanced textiles were completed this month. The cutting edge textiles have been developed specifically for large-scale cultivation of seaweed for biomaterials and biofuels in coastal areas.

Part of a 3-year European project called AT~SEA, the textiles have been subjected to simultaneous trials in inshore waters off the coasts of Norway, Scotland and Ireland. These locations were chosen to expose the textiles to different oceanographic, environmental and climatic conditions on a latitudinal gradient.

“The AT~SEA project aims to make mass cultivation of seaweeds in Europe’s near-shore locations technically and economically feasible by creating textile substrates that can endure the harsh conditions that they are exposed to as the seaweed grows,” said Bert Groenendaal of Sioen Industries and coordinator of the AT~SEA project. The same materials have been used in each of the trials and the same species of seaweed grown on them to get a European view of how these textiles perform in varying conditions.

Following the trials the 11 project partners, which include businesses, industry and research institutes, will assess which textiles offer the optimal performance across Europe. On a tight schedule, these results will lead to the manufacture of a second generation of specifically designed textiles in time for the start of the next growing season this coming autumn.

Research in to the development of economically and environmentally viable production of biomaterials and biofuels (methane and ethanol) from seaweed has been ongoing for some years. It has been established that mass harvesting of wild growing seaweed is not economically viable in Europe where labor costs are high and that harvesting of beach cast seaweed is detrimental to coastal ecosystems and is unlikely to be reliably sustainable on a large scale.


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