Abstract
The contamination of pure water by various pollutants like dyes, heavy metals, and phenolic compounds is now a global issue. Millions of tons of fly ash are generated worldwide per year. Management and utilization of coal fly ash as industrial waste for wastewater treatment application attempted as a waste recycling technique to address the water scarcity issue. Characteristics and properties like shape, size, surface area, permeability, and composition make responsive adsorbents for the potential removal of azo, reactive, anionic, cationic dyes, and heavy metals from effluents. Some research articles summarized in this mini-review are based on coal fly ash (CFA) and their composites for better adsorptivity. Moreover, the main aim is to fabricate low-cost adsorbents with high removal efficiency.
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