Turning Sargassum into Sustainability: A Caribbean Innovation

Fri Feb 28 2025 22:56:49 GMT+0200 (Eastern European Standard Time)
Turning Sargassum into Sustainability: A Caribbean Innovation

Caribbean scientists transform invasive seaweed into biofuel, fueling local vehicles and hope.


As the Caribbean confronts the challenges posed by invasive sargassum, scientists are creatively leveraging this undesirable seaweed into a promising source of biofuel, signaling a new era of sustainable energy.

In 2011, the Caribbean was caught off-guard by large quantities of sargassum algae washing up along its beaches, creating not only an unsightly mess but also a robust stench that repelled tourists. The crisis worsened, leading Prime Minister Mia Mottley of Barbados to declare a national emergency by 2018. Residents and local businesses had spent millions attempting to rid popular tourist spots of the unpleasant seaweed, which continually arrived, adding to the burden of climate-related challenges experienced by these islands.

In a groundbreaking turn of events, a group of local scientists and environmental advocates have set forth to convert this invasive species into a valuable biofuel source, aiming to mitigate both environmental and economic problems. The team from the University of the West Indies (UWI) has developed a bio-compressed natural gas that combines sargassum with waste water from rum distilleries and sheep dung, creating a carbon-neutral alternative fuel.

Dr. Legena Henry, a renewable energy expert and founder of the project, indicated that the potential for sargassum as a fuel source is immense. While sugarcane was initially considered for biofuel, it was deemed insufficient for the team’s ambitious goals, while sargassum appears inexhaustible. The process to convert any car to run on this bio-gas involves a simple kit and an affordable installation time, encouraging widespread adoption if this pilot project succeeds.

The initiative gained momentum when a student’s observation sparked exploration into sargassum’s utility. By using bioreactors to study the combination of sargassum and wastewater, the team's preliminary findings indicated positive results, leading them to file for a patent and seek funding at the UN General Assembly.

Excitement grew throughout the Caribbean as researchers undertook testing with various proportions of waste to maximize biogas production. The promising results led to opportunities funded by organizations including the Blue Chip Foundation, empowering the team to move forward.

Through this project, the researchers did not just aim to create fuel; they sought to diminish the adverse effects of sargassum on tourism and public health. Biologist Shamika Spencer emphasized the importance of transforming waste from beaches into an asset rather than sending it to landfills.

As they look towards the future, the team is actively seeking funding opportunities from various international organizations, with an ambition to scale the project to include other regional applications for this versatile algae. By pioneering a biogas station and creating prototypes for vehicles, they are determined to demonstrate the feasibility and scalability of their initiative.

With aspirations to inspire young scientists and innovators, project contributors like Brittney McKenzie share the sentiment of pursuing ideas that ignite passion and creativity. Dr. Henry further notes this effort exemplifies UWI innovation and has global implications, as the sargassum phenomenon affects not only the Caribbean but also regions in West Africa, South America, and parts of the U.S.

In this journey towards sustainable energy solutions, the Caribbean is positioning itself on the forefront of ecological reinvention, transforming a problem into a paradigm of resourcefulness and resilience.

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