Heat Management Options to Reduce Carbon Footprint of Green Zeolite Faujasite Synthesis from Rice Husk Ash

Abstract

Zeolite could be derived from agricultural waste for green zeolite synthesis technology. It is one of the adsorbents that could reduce carbon dioxide emissions. This research was to develop a novel zeolite faujasite synthesis from rice husk ash as a silica source and to determine the carbon footprint with different heat management options including of crystallization temperature and time. The carbon footprint of zeolite faujasite was evaluated by quantifying the greenhouse gas emissions in terms of carbon dioxide equivalent using the framework of life cycle assessment methodology. The zeolite with 0.3 g was selected as the functional unit to evaluate the impacts of each condition from rice husk ash compared to conventional methods. The utilization of rice husk ash as a silica source instead of a chemical source could reduce the carbon footprint to 0.48 kgCO₂eq, which is 8% less than the conventional one. The highest carbon footprint value was associated with the production stage under high temperature and longtime crystallization. The carbon footprint for successfully synthesized zeolite faujasite derived from rice husk ash with crystallization at room temperature and short time could be reduced by 48%.