Keystone

October 21, 2023

Keystone # Biostone-Using cyanobacteria to display carbonic anhydrase for sustainable brick manufacturing # Cement is the most widely used construction material, but its high carbon footprint calls for zero-carbon alternatives for sustainable development. Inspired by this year’s Turkish-Syrian earthquake, Team Keystone aims to develop a carbon-sequestering, self-healing building material. It utilizes carbonic anhydrase (CA) displayed on the surface of cyanobacteria to convert CO_2 into calcium carbonate, which binds sand aggregates at the nanoscale to increase compressive strength, forming “Biostone”. ...