Work

Kinetics, isotherms, and thermodynamic modeling of liquid-phase adsorption of Rhodamine B dye onto Fe/ZnO-shrimp shell nanocomposite

Year: 2017

Type: article

Abstract: ABSTRACT A cost-efficient nanocomposite was synthesized by sol–gel production of Fe 3+ -doped ZnO nanoparticles (Fe–ZnO) on a base of shrimp shell. Samples were characterized using X-ray power diffraction, Fourier transform infrared spectrometry, and scanning electron microscopy through energy-dispersive X-ray analysis. Experimental studies on the removal of Rhodamine B (RB) from an aqueous solution in batches revealed that the adsorption equilibrium was best represented by the Langmuir isotherm, with a maximum monolayer capacity of 83.81 mg g –1 for RB. Kinetic data were well described by a pseudo-second-order kinetic model. Different thermodynamic parameters, that is, changes in standard free energy, enthalpy, and entropy, were also evaluated. It was found that dye adsorption into the nanocomposite was a spontaneous, exothermic, and physical reaction.

Source: Desalination and Water Treatment

DOI: 10.5004/dwt.2017.21070

Authors: Zohreh Saadati, Masomeh Gilani

Institution: Islamic Azad University, Omidiyeh Branch

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