K.Chiranjeevi, et al. “Fly Ash for Removal of Malachite Green Dye From Wastewater: Kinetic and Isotherm Studies”. Journal of Science & Technology (JST), vol. 5, no. 3, May 2020, pp. 195-04, doi:10.46243/jst.2020.v5.i3.pp195-204.