Exploring the potential of using bio briquette ash in building materials

Abstract

As the population and urbanization increase, the demand for affordable housing and the environmental impact of conventional materials have become more pronounced. This study seeks sustainable solutions through the repurposing of waste products. This study examined the potential application of bio-briquette ash derived from sanitary sludge in building-material production. Bio-briquette ashes were produced by incinerating bio-briquette char in an open kitchen at temperatures ranging from 300°C to 450°C.The chemical composition of bio-briquette ashes produced with different binders (cassava peels, wastepaper, and no binder) was analyzed using X-ray fluorescence (XRF) and X-ray diffraction (XRD). The results showed that the ashes contain substantial amounts of oxides, including SiO2, Fe2O3, Al2O3, and CaO, which are comparable to other supplementary cementitious materials like rice husk ash, sugarcane bagasse ash, and fly ash. The findings indicate that these bio-briquette ashes have low pozzolanic properties, however, they have the potential to produce cement-based products after activating their reactivity either by optimization of burning temperature, mechanical grinding or chemical activation to improve strength, durability, and workability. Future studies will focus on optimizing the burning temperature, mechanical grinding, or chemical activation of the bio-briquette ashes to enhance their reactivity as well as utilizing bio-briquette ash in building materials production and evaluating their performance in practical applications.