Nickel Ferrite Nanoparticle: Synthesis, Modification by Surfactant and Dye Removal Ability
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Nickel Ferrite Nanoparticle: Synthesis, Modification by Surfactant and Dye Removal Ability Niyaz Mohammad Mahmoodi
Received: 29 August 2012 / Accepted: 12 December 2012 # Springer Science+Business Media Dordrecht 2013
Abstract In this paper, nickel ferrite nanoparticle (NFN) was synthesized and characterized. The surface modification of NFN using sodium dodecyl sulfate (SDS) was studied. Dye removal ability of NFN and surface modified NFN (NFN-SDS) was investigated. Physical characteristics of NFN-SDS were studied using Fourier transform infrared (FTIR), scanning electron microscopy (SEM) and X-ray diffraction (XRD). Basic Blue 41 (BB41), Basic Green 4 (BG4) and Basic Red 18 (BR18) were used as model compounds. The kinetic and isotherm of dye adsorption were studied. The effects of operational parameter (adsorbent dosage, pH and salt) on dye removal were evaluated. Adsorption kinetic of dyes was found to conform to pseudo-second-order kinetics. The maximum dye adsorption capacity (Q0) was 0.50 mg/g BB41, 0.41 mg/g BG4 and 0.25 mg/g BR18 for NFN and 111 mg/g BB41, 17 mg/g BG4 and 44 mg/ g BR18 for NFN-SDS. It was found that dye adsorption onto NFN-SDS followed Langmuir isotherm. The
N. M. Mahmoodi (*) Department of Environmental Research, Institute for Color Science and Technology, Tehran, Iran e-mail: [email protected] N. M. Mahmoodi e-mail: [email protected] N. M. Mahmoodi e-mail: [email protected]
thermodynamic data showed that dye adsorption onto NFN-SDS was spontaneous, endothermic, and a physisorption reaction. The results showed that the NFNSDS being a magnetic adsorbent might be a suitable alternative to remove dyes from colored aqueous solutions. Keywords Nickel ferrite nanoparticle . Synthesis . Surface modification . Surfactant . Dye removal ability
1 Introduction Pollutant removal from wastewater using adsorption process is interested because different adsorbents are able to concentrate specific substances from solution onto their surfaces. Traditional adsorbents have some disadvantages such as poor separation ability and relatively limited adsorption capacity for dyes. Thus researchers’ interest is to focus on novel adsorbents (Mahmoodi et al. 2013, Mahmoodi and Najafi 2012; Mahmoodi 2011 2013; Chen et al. 2001; Yang et al. 2010). An emerging field of pollutant removal is the application of magnetic nanoparticles (Ambashta and Sillanpää 2010; Ngomsik et al. 2005). The properties of magnetic adsorbents have opened a new field in engineering separations applications. The magnetic nanoparticles could be separated based on their nanostructures since the ease of direction of magnetisation would vary depending on the ordering of atoms in the
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magnetic structure (Ambashta and Sillanpää 2010; Sun et al. 2007). The application of a magnetic field of low intensity induces the magnetization of the material and thus makes the use of a magnetic force possible, but when the magnetic field is cut off, the magnetization immediately decreases to
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