Algae may hold the key to greener concrete

In Florida, a University of Miami research team has won the top prize at the recent Climate Correction Conference in Orlando for developing an algae‑based concrete additive that reduces the construction industry’s outsized carbon footprint. 

The team harvested native Florida algae and converted it into biochar, a carbon‑rich, charcoal‑like substance, that Jasmine Rodriguez, a first‑year civil engineering doctoral student, said can then be chemically treated to mix in higher amounts into concrete.  The team is also exploring carbon‑curing techniques that would lock carbon dioxide directly into concrete during production. 

The potential for positive impact is high, given that cement is one of the world’s most carbon-intensive and ubiquitous materials.  

For winning the top prize at the Climate Correction Conference, held recently in Orlando, VoLo Foundation awarded the team the $25,000 VISTA Award, funding that will support upgraded equipment to refine biochar production and improve consistency.

Tags: algae, Florida

Category: Chemicals & Materials