Work

Adsorption of Acid Red 114 by facile prepared magnetic amino-nanoadsorbent: Kinetics, isotherms and thermodynamics studies

Year: 2018

Type: article

Abstract: ABSTRACT Herein, magnetic amino-coated silica iron oxide nanoparticles (Fe 3 O 4 @SiO 2 -NH 2 NPs) were successfully synthesized via a one-pot route and then applied as a nano-adsorbent for removal of Acid Red 114 dye from aqueous solutions. The effect of various experimental parameters such as pH, adsorbent dosage, contact time and initial dye concentration on the dye removal efficiency was studied. According to the experimental results, about 100% of Acid Red 114 was removed from aqueous solutions at the adsorbent amount of 0.4 g L –1 at pH = 2 in 120 min. Analysis of kinetics and equilibrium adsorptions revealed that the adsorption data were best fitted to pseudo-second-order kinetic and Langmuir model with the maximum absorption capacity of 84.75 mg g –1 , respectively. Furthermore, the Fe 3 O 4 @SiO 2 -NH 2 NPs could be simply recovered by external magnet and it exhibited recyclability and reusability for several cycles. Such functional nanoparticles can be used as effective adsorbents for the removal of organic pollutants from aqueous solutions. Keywords: Magnetic nanoparticles; Acid Red 114; Amine group; Adsorption; Recycling

Source: Desalination and Water Treatment

DOI: 10.5004/dwt.2018.22578

Authors: Mohsen Mohammadi Galangasha, Zahra Niyazi Kolkasaraeia, Atefeh Ghavidast, Mehdi Shirzad-Siboni

Institutions: University of Guilan, Guilan University of Medical Sciences

Language: English

Topic: Adsorption and biosorption for pollutant removal

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: hybrid

Estimated APC paid: $1,000