Adsorptive removal of hazardous dye (crystal violet) using bay leaves (Laurus nobilis L.): surface characterization, batch adsorption studies, and statistical analysis
- 2 August 2022
- journal article
- research article
- Published by Springer Science and Business Media LLC in Environmental Science and Pollution Research
- Vol. 30 (1), 1333-1356
- https://doi.org/10.1007/s11356-022-22278-4
Abstract
In this study, the surface properties of Laurus nobilis L. were determined by inverse gas chromatography. From this, the surface of Laurus nobilis L. was found to be an acidic (\({K}_{D}/{K}_{A}=0.95\)). Then, the adsorption of hazardous crystal violet dye on Laurus nobilis L. was examined. For the adsorption process, the optimum conditions were determined as contact time (60 min), adsorbent dosage (1.0 g/L), agitation rate (200 rpm), and initial pH (≅ 7). The efficiencies of initial concentration, contact time, temperature, and their binary combinations on the improvement of adsorption percentage were statistically investigated via three different two-way ANOVA analyses. Adsorption data were applied to different isotherms, and it was determined that the Langmuir isotherm (r2 = 0.9998) was the most suitable isotherm for the adsorption process. The \({q}_{m}\) value was calculated as 400.0 mg/g at 25 °C from the Langmuir isotherm. According to kinetic models, it was observed that the adsorption occurred in three steps. According to enthalpy (+ 7.52 kJ/mol), activation energy (+ 8.91 kJ/mol), and Gibbs free energy (− 30.0 kJ/mol) values, it was determined that the adsorption occurred endothermically and spontaneously. As a result of reusability studies, it was determined that the adsorbent could be used repeatedly. Graphical abstract
This publication has 91 references indexed in Scilit:
- Removal of Crystal Violet from Aqueous Solution by Adsorption onto Eggshells: Equilibrium, Kinetics, Thermodynamics and Artificial Neural Network ModelingWaste and Biomass Valorization, 2012
- Cationic and anionic dye adsorption by agricultural solid wastes: A comprehensive reviewDesalination, 2011
- Application potential of grapefruit peel as dye sorbent: Kinetics, equilibrium and mechanism of crystal violet adsorptionJournal of Hazardous Materials, 2010
- Studies on adsorption of crystal violet dye from aqueous solution onto coniferous pinus bark powder (CPBP)Journal of Hazardous Materials, 2009
- Removal of a basic dye from aqueous solution by adsorption using Parthenium hysterophorus: An agricultural wasteDyes and Pigments, 2007
- Pseudo-second order model for sorption processesProcess Biochemistry, 1999
- Adsorption of 4,4’ ‐ iso propylidene diphenol and diphenylolpropane 4,4’ dioxyaceticacid from aqueous solution on kaoliniteJournal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology, 1996
- The Role of the Interface in Carbon Fibre-Epoxy CompositesThe Journal of Adhesion, 1987
- 786. Studies in adsorption. Part XI. A system of classification of solution adsorption isotherms, and its use in diagnosis of adsorption mechanisms and in measurement of specific surface areas of solidsJournal of the Chemical Society, 1960
- The Exchange Adsorption of Ions from Aqueous Solutions by Organic Zeolites. II. Kinetics1Journal of the American Chemical Society, 1947