Silica‐Based NTPC‐Fly Ash for Dye‐Removal Application and Effect of Its Modification

Abstract

Silica-based fly ash (FA) received from the National Thermal Power Corporation (NTPC), India has been utilized for determining its dye-adsorption capacity. The dye adsorption using the NTPC-FA has been examined by varying the initial methylene blue dye concentration (7.5-150 lM) and initial solution-pH (2.5-11.5). The dye-adsorption capacity of NTPC-FA has been found to be 0.43 mg/g. To increase the dye-adsorption capacity, the NTPC-FA is subjected to the hydrothermal treatment and typical washing cycles without and with the coating of sol-gel derived anatase-titania. The hydrothermally treated NTPC-FA and hydrogen titanate-silica composite thus obtained exhibit dye-adsorption capacity higher than that of NTPC-FA. *satyajit_shukla@niist.res.in

Degradation of Anthraquinone Dyes from Effluents: A Review Focusing on Enzymatic Dye Degradation with Industrial Potential

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Novel Utilization of Fly Ash for High‐Temperature Mortars: Phase Composition, Microstructure and Performances Correlation

“…Ash as by‐product of the coal combustion is one of the most imminent environmental polluters. The annual global fly ash production is over 600 million tons that makes this by‐product a serious problem with severe implications for the environment …”

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