:: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies
FEATURE PEER-REVIEWED ARTICLE
R. Muralikrishnan, C. Jodhi(Department of Civil Engineering, Annamalai University, Tamil Nadu, 608002, INDIA).
Disciplinary: Environmental Engineering & Management, Environmental Chemical Engineering, Pollution & Detoxification, Bioresources.
Keywords: Rice husk-derived biochar; Reactive dyes; Elutants; Freundlich model; Dye removal by adsorption; S/L ratio; Synthesis of Biochar; FTIR Spectrum; Freundlich adsorption isotherm; Pseudo-first-order kinetic model; Pseudo-second-order kinetic model; Desorption efficiency; Dye uptake capacity; Adsorption isotherm.
This study assesses how rice husk biochar is used to remedy three reactive dyes including Reactive Black 5 (RB5). Reactive Orange 16 (RO16), and Reactive Blue 19 (RB19) in an aqueous solution. From the batch study, it is understood that the dye gets adsorbed at the maximum level when the pH is 2, the temperature is 35°C and the biochar dosage is maintained at 1 g/l. The adsorption isotherm experiments determined the highest uptakes of RO16, RB5, and RB19 to be 73.44 mg/g, 75.68 mg/g, and 55.37 mg/g, respectively. Freundlich Model is considered as the best fit model based on Isotherm studies that had a correlation coefficient of more than 0.9570. The kinetic study signifies that maximum adsorption has been completed within 120 minutes whereas two models such as pseudo-first-order kinetic model and pseudo-second-order kinetic model were utilized to fit the experimental data. This study reports the investigation on biochar reusability with the help of different elutants, S/L ratios, and regeneration cycles.
Paper ID: 12A8D
Cite this article:
Muralikrishnan, R., Jodhi, C. (2021). Biodecolorization of Reactive Dyes Using Biochar Derived from Rice Husk (Oryza Sativa): Batch & Isotherm and Kinetic & Desorption Studies. International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12(8), 12A8D, 1-15. http://doi.org/10.14456/ITJEMAST.2021.151