Biogenic fabrication of iron nanoadsorbents from mixed waste biomass for aqueous phase removal of alizarin red S and tartrazine: Kinetics, isotherm, and thermodynamic investigation

Abstract

Present work deals with the facile and ecologically viable production of iron nanoadsorbents by utilizing different waste plant biomass, orange peel, flower waste, and environmentally harmful Alligator weed. The as‐prepared nanoadsorbents were applied for the aqueous phase minimization of toxic dyes, alizarin red S and tartrazine. Different techniques, namely, X‐ray diffraction, Fourier transform infra‐red spectroscopy, scanning electron microscopy, dynamic light scattering and magnetic properties measurement system, were applied to characterize the synthesized material. Impact of various experimental conditions like pH, adsorbent dose, contact time, and temperature on removal trend was examined. The acidic medium positively favored the process of sorption. Kinetic analysis revealed that the adsorption of both the dyes followed pseudo‐second‐order kinetic model. Equilibrium sorption data were fitted better to Freundlich model as compared with Langmuir model. The maximum adsorption capacities at 50°C were 42.58 and 68.78 mg g–1 for alizarin red S and tartrazine at pH 4.0 and 2.0, respectively. Thermodynamic parameters exhibited that the sorption of both the dyes onto nanoadsorbent was spontaneous and endothermic with increased randomness at the solid–liquid interface. Desorption experiment demonstrated that the regenerated adsorbent can be recycled efficiently up to three times. Overall, the prepared nanomaterials exhibit remarkable removal competency for both dyes tested like alizarin red S and tartrazine.

Magnetic Metal Organic Framework Immobilized Laccase for Wastewater Decolorization

“…Textile effluents directly discharged into natural water sources cause health problems [1]. Reactive Black 5 (RB) and Alizarin Red S (AR) dyes are two of the most harmful dyes used in textile manufacturing [2,3], utilized to give color to specific products. Various dyes contain in their structure phenolic rings and several functional groups, like NO 2 , NO, OH, COOH, NH 2 , NHR and NR 2 , which are responsible for their toxicity [4,5].…”

Modelling the Kinetics of Tartrazine Sorption by Bottom Ash

“…The result of the nonlinear regression work was within the range of the original study at 9.28 mg g -1 and 0.026 As far as tartrazine biosorption is concerned (Table 4), the PSO model is also the best model for several adsorbents such as Inula viscosa waste [65], activated carbon derived from Cassava sievate biomass [66], iron nanoadsorbents utilizing different waste plant biomass [67], lanthanum enriched aminosilane-grafted mesoporous carbon material [68], magnetic Ni-Ag bimetallic nanoparticles supported on reduced graphene oxide (Ni-Ag NPs/rGO) [69], activated carbon produced from pecan nut shells [70], masau stone (MS) [71], copper coordinated dithiooxamide metal-organic framework (Cu-DTO MOF) [72], Fe(II) based adsorbent system [73], iron modified zeolitic tuff [74], activated carbon from Alligator weed (Alternenthera philoxeroids) [75], polyaniline nanolayer composite [76], while the PFO was the best model for adsorption of tartrazine using natural quartz, modified with a cationic surfactant and homoionized with sodium [77] ZnAl-LDH/PVA nanocomposite [78]. The ability to fit kinetic data was widely accepted as the best test of the validity of the PFO and PSO equations, despite the fact that such a test has little to do with whether or not the equations have a solid physicochemical foundation.…”

Modelling the Kinetics of Tartrazine Sorption by the Rhizopus arrhizus Biomass

“…As far as tartrazine biosorption is concerned (Table 4), the PSO model is also the best model for several adsorbents such as Inula viscosa waste [75], activated carbon derived from Cassava sievate biomass [76], iron nanoadsorbents utilizing different waste plant biomass [77], lanthanum enriched aminosilanegrafted mesoporous carbon material [78], magnetic Ni-Ag bimetallic nanoparticles supported on reduced graphene oxide (Ni-Ag NPs/rGO) [79], activated carbon produced from pecan nut shells [80], masau stone (MS) [81], copper coordinated dithiooxamide metal-organic framework (Cu-DTO MOF) [82], Fe(II) based adsorbent system [83], iron modified zeolitic tuff [84], activated carbon from Alligator weed (Alternenthera philoxeroids) [85], polyaniline nanolayer composite [86], while the PFO was the best model for adsorption of tartrazine using natural quartz, modified with a cationic surfactant and homoionized with sodium [87] ZnAl-LDH/PVA nanocomposite [88]. It was often accepted that the ability to fit the kinetic data was the best test of the PFO and PSO equations' validity, despite the fact that such a test has little to do with whether or not the equations have a solid physicochemical foundation.…”