Microwave and ultrasound energy in the process of fly ash zeolite synthesis and its application for CO2 sorption

Abstract

Literature sources confirm the possibility of using microwave and ultrasonic energy in the zeolitic synthesis process which lead to a significant reduction in synthesis time. In addition, literature data show that it is possible to obtain a high degree of conversion of fly ash into zeolite material, which is advantageous as obtained materials might be applied in various processes. Microwave or ultrasonic energy can be also used as an additional process step to influence positively the outcome of the synthesis. In this study, an attempt was performed to synthesize zeolitic materials from fly ashes using microwave and ultrasonic energy as the only energy source. What's more the introduction of an additional ultrasonic energy process step was introduced to synthesis of fly ash zeolites by fusion method. The sample obtained by combining the fusion method with ultrasonic energy has been pre-tested for its carbon dioxide sorption capacity, indicating the applicability of materials thus obtained.