TY - JOUR ID - 89978 TI - Arundo donax L. as a low-cost and promising biosorbent for the removal of crystal violet from aqueous media: kinetic, isotherm and thermodynamic investigations JO - Chemical Review and Letters JA - CRL LA - en SN - 2676-7279 AU - Krika, Fouad AU - Krika, Abderrezak AU - Azizi, Ahmed AD - department of fundamental sciences, unversity of jijel 18000, Algeria AD - Department of Environmental Sciences and Agronomic Sciences, Faculty of Nature Life and Sciences, University of Mohamed Seddik BenYahia Jijel, BP 98 Ouled Aissa, Jijel 18000, Algeria. AD - department of process engineering, University of Laghouat, Algeria Y1 - 2019 PY - 2019 VL - 2 IS - 2 SP - 59 EP - 68 KW - Adsorption KW - Crystal violet KW - Isotherms KW - Kinetics KW - Thermodynamics DO - 10.22034/crl.2019.187434.1015 N2 - In the present study, Arundo donax L was used as a low-cost biosorbent for the uptake of basic dye crystal violet (CV) from aqueous media. Systematic batch mode studies of adsorption of crystal violet (CV) on Arundo donax were carried out as a function of process of parameters includes initial CV concentration, dose of adsorbent, pH, contact time and temperature. The equilibrium adsorption data were analyzed by Langmuir, Freundlich, Temkin and Dubinin–Radushkevich (D-R) isotherm models. The adsorption of CV followed the Langmuir model with a maximum adsorption capacity (qmax) of 19.60 mg/g and pseudo second-order kinetics under a specified set of conditions. The thermodynamic parameters like free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°) changes for the adsorption of CV ions have been evaluated and it has been found that the reaction was spontaneous and exothermic in nature. Owing to its rapid adsorption rate and uptake capacity, stem of Arundo donax L. seems to be a promising biosorbent for removal of toxic dyes from wastewater. UR - https://www.chemrevlett.com/article_89978.html L1 - https://www.chemrevlett.com/article_89978_0030d5833f03db8bcf979a61082e2c5e.pdf ER -