The sorption of cationic dyes onto kaolin: Kinetic, isotherm and thermodynamic studies
By A. Tehrani‐Bagha, H. Nikkar, Niyaz Mohammad Mahmoodi, M. Markazi, F. Menger. 2011
218 citations recorded by the source corpus.
Abstract This study investigated the potential use of a low-cost inorganic powder (Persian Kaolin) for removal of Basic Yellow 28 (BY28), Methylene Blue (MB) and Malachite Green (MG) from aqueous solution. Kaolin was characterized via a laser particle size analyzer (PSA), scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray fluorescence (XRF) techniques. The effect of adsorbent dosage, dye concentration, initial pH and the presence of various electrolytes was studied. The isotherm data of dyes were correlated reasonably well by the Langmuir adsorption isotherm. The values of the adsorption capacity of kaolin towards the cationic dyes ranged from 16 mg/g to 52 mg/g, being probably dependent on the geometry of the dye molecules. The resulting degrees of dye removal were 65–99% for initial dye concentration of 10 mg/L and for kaolin loadings of 0.8–2.5 g/L. It was found that the adsorption of dyes on kaolin followed a pseudo-second order equation. The recovery and reuse of kaolin for a second and third time have also been studied. The thermodynamic studies showed that the dye adsorption onto kaolin is a spontaneous, endothermic and a physical reaction.
Subfields: Biomaterials, Pollution, Water Science and Technology
View Paper: https://www.semanticscholar.org/paper/9421d1cc8a033b07dd438c313457bfd12bf10b67
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Biomaterials
In Water Science and Technology
Citations in the corpus
- Application of potato (Solanum tuberosum) plant wastes for the removal of methylene blue and malachite green dye from aqueous solution (2016, background): “Several adsorbents have been reported in the literatures such as clay (Tehrani-Bagha et al., 2011), zeolite (Han et al., 2009), fly ash (Rastogi et al., 2008), silica gel (Kushwaha et al., 2010), chitosan (Mahmoodi et al., 2011) and algae (Ncibi et al., 2009) regarding the adsorption of basic dyes…”