When we think of sustainable resources, towering underwater forests might not be the first image that comes to mind. Yet, kelp—a type of large brown seaweed—is making waves as a powerhouse of ecological and economic benefits.
A Bounty Beneath the Waves
Kelp forests thrive in nutrient-rich, cold waters, with the largest concentrations found along the coasts of North America, Europe, and Asia—particularly in regions like the North Atlantic, the Pacific Northwest, and around Japan and Korea. In Europe, major kelp-producing areas include Norway, France, Ireland, Scotland, and Iceland, where extensive wild kelp beds and cultivated farms support growing industries. Some species can grow up to half a metre per day, making them one of the fastest-growing organisms on Earth. This rapid growth results in vast biomass, offering a renewable resource ripe for various applications.
Championing the Green Circular Bio-Based Economy
Kelp is a prime example of a sustainable resource supporting a green circular bio-based economy. Unlike land crops, kelp requires no arable land, fresh water, or fertilizers, making it a low-impact crop. Moreover, kelp farming can enhance marine ecosystems by absorbing excess nutrients from agricultural runoff and wastewater, preventing the overgrowth of harmful algae—a process known as eutrophication, or excessive nutrient build-up.
Kelp also plays a key role in reducing carbon levels in the ocean. As it grows, it naturally absorbs carbon dioxide from seawater, much like forests absorb CO₂ from the air. Farming and harvesting kelp can contribute to climate action when part of the biomass is used in long-lasting products or stored in ways that prevent the carbon from quickly returning to the atmosphere.
A Versatile Asset Across Industries
Kelp’s unique properties make it a valuable resource across various sectors:
- Food: Packed with vitamins, minerals, and antioxidants, kelp is a nutritious addition to human diets. It’s widely used in Asian cuisine and is gaining global popularity as a health supplement.
- Animal Feed: Kelp can boost livestock health and even reduce methane emissions in cattle, making farming more sustainable.
- Personal Care: Rich in hydrating and anti-inflammatory compounds, kelp extracts are prized ingredients in skincare and cosmetic products.
- Industrial Applications: Kelp-derived compounds like alginates are used in pharmaceuticals, textiles, and as natural thickeners in food production.
Outpacing Alternatives
Compared to land-based crops, kelp has several advantages:
- Growth Efficiency: Its rapid growth rate allows for multiple harvests annually, producing more biomass per area than many traditional crops.
- Environmental Benefits: Kelp farming doesn’t compete with food crops for land or water and helps absorb carbon from the ocean, supporting climate action.
- Economic Opportunities: Kelp farming can boost coastal economies, creating jobs and supporting local industries.
Embracing Kelp for a Sustainable Tomorrow
With its vast potential, kelp is not just an environmental asset but also a driving force for innovation across industries. Recognising this, the PROTEUS project is dedicated to unlocking the full value of Europe’s brown macroalgae through sustainable processing technologies.
The project brings together a strong consortium of partners working to transform kelp into high-value products. ALGINOR is leading the way by developing Europe’s first fully integrated industrial biorefinery in Norway, while industry leaders such as Vaessen-Schoemaker (food), OLMIX (animal feed), ESSITY (personal care), and BORREGAARD (industrial applications) are integrating kelp-based solutions into their sectors. Research and sustainability experts IMR, NORSUS, CLIC, and Steinbeis Innovation are also contributing their expertise, alongside affiliated entities Alginor Biorefinery and Hypomar, linked to Alginor ASA.
As we seek sustainable solutions to global challenges, kelp stands out as a beacon of innovation. Its diverse applications not only drive economic growth but also align with environmental responsibility, embodying the essence of a green circular bio-based economy.