• German scientists turn trash ash into CO2-binding concrete for sustainable construction The team is comparing wet and moist carbonation to see which stores the most CO2 • German researchers have been developing a new technique to permanently bind carbon dioxide within municipal solid waste incineration (MSWI) ash, and turn it into a usable substitute for sand, gravel, or even concrete components • MSWI ash consists of up to 95 percent bottom ash, and fly ash, which is produced from burning municipal solid waste • It is considered hazardous waste due to high concentrations of heavy metals, toxic dioxins, furans and soluble salts • To tackle this issue, scientists from the Cologne University of Applied Sciences (TH Köln) and RWTH Aachen University, have started exploring whether this harmful residue ash could be repurposed into a climate-friendly raw material • Led by the Bergischer Waste Management Association (BAV), the project focuses on a natural reaction known as carbonation, in which the minerals inside MSWI ash chemically react with carbon dioxide (CO2)

Article Summaries:

  • German scientists turn trash ash into CO2-binding concrete for sustainable construction The team is comparing wet and moist carbonation to see which stores the most CO2. German researchers have been developing a new technique to permanently bind carbon dioxide within municipal solid waste incineration (MSWI) ash, and turn it into a usable substitute for sand, gravel, or even concrete components. MSWI ash consists of up to 95 percent bottom ash, and fly ash, which is produced from burning municipal solid waste. It is considered hazardous waste due to high concentrations of heavy metals, toxic d

Sources: