| Summary: | The paper reviewed the current perspectives on the development of carbon diox�ide (CO2) sequestration through its process conversion into calcite. The process
occurs in either geological or biological systems. However, geological sequestration
is an expensive process, which is slow in comparison to bio-sequestration.
Recently, the bio-sequestration of atmospheric CO2 into the soil using microorgan�isms such as algae has been investigated. However, the algae cannot be used in
the bio-concrete due to their nature as phototrophic organisms. In contrast, bac�teria are the most potent organisms in bio-concrete technology. The use of bacter�ial species in the bio-aerated concrete bricks (B-ACB) and its potential to bio�sequestrate CO2 represents a future strategy to reduce high CO2 pollution.
Bacterial cells can capture CO2 by accelerating the carbonation processes, which
convert CO2 into calcium carbonate (CaCO3) via carbon anhydrase and urease
enzymes. The present paper aimed to highlight and discuss the applicability of
bacteria in the B-ACB for capturing and storing CO2. It is evident from the literature
that the new trends to use bio-concrete might contribute to the reduction of CO2
by accelerating the carbonation process and strengthening the B-ACB.
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