IFT Media – International News
Caribbean scientists are turning invasive seaweed into a resource that could power vehicles and combat climate change. Researchers at the University of the West Indies (UWI) in Barbados have developed bio-compressed natural gas (bio-CNG) from sargassum, an invasive algae. This biofuel innovation offers a new way to tackle the region’s environmental challenges.
The Sargassum Crisis
Since 2011, the Caribbean has been battling an influx of sargassum seaweed, washing up on beaches and disrupting tourism. The algae releases a foul odor as it decomposes, affecting local economies. In 2018, Barbados’ Prime Minister Mia Mottley declared sargassum a national emergency. Now, Caribbean scientists have found a way to repurpose this environmental nuisance.
Turning Seaweed Into Fuel
A team from UWI has created bio-CNG using sargassum, wastewater from rum distilleries, and dung from blackbelly sheep. This biofuel can power vehicles, providing an affordable alternative to fossil fuels. The conversion process is quick and cost-effective: vehicles can be converted in four hours for just $2,500.
Dr. Legena Henry, a renewable energy expert at UWI, explains that sargassum is a more reliable source than sugarcane. While Barbados still produces sugarcane, it wasn’t enough to meet the team’s goals. Sargassum, however, is abundant and readily available.
How It Works
- Biogas Production: Researchers tested combinations of sargassum and wastewater, producing biogas in significant amounts. This biogas was then used to fuel a test vehicle.
- Scaling Up: The team plans to expand the project with a four-car pilot, aiming to sell bio-CNG to 300 taxis in Barbados.
Economic and Environmental Benefits
This initiative helps reduce reliance on costly imported fuels while protecting the tourism industry. Dr. Henry and her team are working to raise $2 million to launch the project commercially. They also seek $7.5 million to scale up and meet the demand for bio-CNG in Barbados.
The project will not only generate local jobs but also foster sustainable economic growth in the Caribbean.
Sargassum’s New Purpose
The team plans to set up a biogas station to replace their existing facility. They are also exploring other uses for sargassum, such as creating pest control products.
Dr. Shamika Spencer, a biologist on the team, believes the project is critical: “Repurposing sargassum helps protect both tourism and health.”
A Step Toward a Greener Future
This initiative exemplifies the Caribbean’s commitment to a sustainable future. Brittney McKenzie, a student who sparked the idea, is thrilled with the results: “Seeing the car in action was amazing. I encourage all young scientists to pursue their ideas.”
The project has already attracted $100,000 in funding and is poised to expand globally. Dr. Henry believes this technology could be applied in regions such as West Africa, South America, and Florida.
A Global Impact
“This is a major win for the Caribbean,” says Dr. Henry. “It shows that small islands can create innovations with global impact.”
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