• Sanjay R. Kankrej
• Mayuri S. Kulkarni
• Rajendra P. Patil
• Ashok V. Borhade

ABSTRACT Release of colouring agents like Rhodamine B dye in water bodies is an important environmental problem as it is carcinogenic and non-bio-degradable. On the other hand plethora of coal fly ash (CFA) produced in thermal power stations is another threat to the environment. Considering these problems; present study deals with recyclability and modification of waste coal fly ash into alumino-silicate Nosean [Na8Al6Si6O24(SO4).H2O] by fusing CFA with alkali at 550 0C followed by hydrothermal treatment. The synthesised nosean was fully characterized by FT-IR, XRD, SEM and BET surface area and it was further checked for potential application for removal of the dye Rhodamine B from its aqueous solutions using batch method. The obtained equilibrium data were fitted by the Langmuir, Freundlich, and Temkin and Dubinin-Radushkevich isotherm models. The well-known thermodynamic parameters such as change in Gibb’s free energy (ΔG), entropy change (ΔS) and enthalpy change (ΔH) were evaluated first time for nosean to check the possibility of adsorption process. Further the kinetic parameters such as rate constant and order of adsorption process is also estimated.

Fly ash, hydrothermal, Nosean, adsorption, Rhodamine B.

"KINETIC AND THERMODYNAMIC STUDIES ON ADSORPTION BEHAVIOUR OF RHODAMINE B DYE ON NOSEAN SYNTHESISED FROM COAL FLY ASH.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 12, page no.367-379, December-2018, Available :http://www.jetir.org/papers/JETIR1812148.pdf

"KINETIC AND THERMODYNAMIC STUDIES ON ADSORPTION BEHAVIOUR OF RHODAMINE B DYE ON NOSEAN SYNTHESISED FROM COAL FLY ASH.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 12, page no. pp367-379, December-2018, Available at : http://www.jetir.org/papers/JETIR1812148.pdf