Algae Gives Concrete a Better Environmental Footprint

Four University of Colorado professors came up with an idea inside their labs to use algae to make a better kind of concrete, and hopefully disrupt an industry that is responsible for about 8% of the annual CO₂ emission worldwide. Their company is called Prometheus.

“We believe that our concrete emits about 90% less CO₂ than traditional concrete,” said Vaughn Bigelow, vice president of manufacturing for the company. Traditionally, “Limestone is mined and harvested from the earth, it’s then put into a kiln and cooked at about 1500 degrees Celsius, which then emits a lot of CO₂ into the atmosphere.”

In Prometheus’ approach to manufacturing concrete blocks, the algae sequesters carbon even after it’s made into these blocks. The algae also make the blocks super-strong using the same process found in nature. “The algae help to create these biominerals that we utilize in our material in the same way that seashells and coral reefs use biominerals to make the hard shells,” said Stephen Bell, director of biotechnology.

All rights reserved. Permission required to reprint articles in their entirety. Must include copyright statement and live hyperlinks. Contact david@algaeplanet.com. Algae Planet accepts unsolicited manuscripts for consideration, and takes no responsibility for the validity of claims made in submitted editorial.

Seagriculture EU 2024
AlgaeMetrics

Subscribe

EABA AlgaeEurope23
Hire Robin Coles Technical Writer

Breaking-News

  • November 27, 2023: Australia’s first high-level organization to serve the commercial seaweed industry officially launched in Canberra on November 16, 2023. The Australian Sustainable Seaweed Alliance (ASSA) represents ten corporate members across six states and was launched to advance environmentally responsible farming and production, strategic research and development, and scientific and biotech-related commercialization. READ MORE...
  • November 20, 2023: A research team from IIT Gandhinagar, a leading technical institution in India, has found that beads made from a combination of sea algae, salt, and nanoparticles can be used to remove dyes from wastewater pollution created in the dye and chemical industries. READ MORE...
  • November 17, 2023: Isis Central Sugar Mill, 300km north of Brisbane, Australia, will soon be home to ponds growing algae fed by the mill’s wastewater. The mill will harvest the carbon dioxide created when they burn fiber left over from crushing cane to make electricity and use the nutrients in the wastewater to feed the algae, which is intended for food and fuel. READ MORE...

A Beginner’s Guide