For Publishers
DiscoveryMetadataPeer reviewHostingPublishing
For Researchers
JoinPublishReviewCollect
Register
Blog
About
Search
Advanced search
My ScienceOpen
Search
For Publishers
For Researchers
Blog
About
47
views
25
references
 Top references
cited by
30
    
0 reviews
 Review
0
comments
 Comment
0
recommends
+1 Recommend
0 collections
    0
    shares
      455
      similar
       All similar
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Synthesis and properties of Fe 3O 4-activated carbon magnetic nanoparticles for removal of aniline from aqueous solution: equilibrium, kinetic and thermodynamic studies

      research-article

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          In this study, powder activated carbon (PAC) and magnetic nanoparticles of iron (III) oxide were used for synthesis of Fe 3O 4-activated carbon magnetic nanoparticles (AC-Fe 3O 4 MNPs) as an adsorbent for the removal of aniline. The characteristics of adsorbent were evaluated by SEM, TEM, XRD and BET. Also, the impact of different parameters such as pH, contact time, adsorbent dosage, aniline initials concentration and solution temperature were studied. The experimental data investigated by Langmuir and Freundlich adsorption isotherms and two models kinetically of pseudo first-order and pseudo second-order. The results indicated that the adsorption followed Langmuir and pseudo second-order models with correlation r 2 > 0.98 and r 2 > 0.99, respectively. The equilibrium time was obtained after 5 h. According to Langmuir model, the maximum adsorption capacity was 90.91 mg/g at pH = 6, and 20°C. The thermodynamic parameters indicated that adsorption of aniline on magnetic activated carbon was exothermic and spontaneous. This synthesized AC-Fe 3O 4 MNPs due to have advantages such as easy and rapid separation from solution could be applied as an adsorbent effective for removal of pollutants such as aniline from water and wastewater.

          Related collections

          Most cited references25

          • Record: found
          • Abstract: found
          • Article: not found

          Adsorption and magnetic removal of neutral red dye from aqueous solution using Fe3O4 hollow nanospheres.

          Mahmood Iram, Chen Guo, Yueping Guan … (2010)
          Fe(3)O(4) hollow nanospheres were prepared via a simple one-pot template-free hydrothermal method and were fully characterized. These magnetic spheres have been investigated for application as an adsorbant for the removal of dye contaminants from water. Because of the high specific surface area, nano-scale particle size, and hollow porous material, Fe(3)O(4) hollow spheres showed favorable adsorption behavior for Neutral red. Factors affecting adsorption, such as, initial dye concentration, pH and contact time were evaluated. Langmuir and the Freundlich adsorption isotherms were selected to explicate the interaction of the dye and magnetic adsorbant. The characteristic parameters for each isotherm have been determined. The overall trend followed an increase of the sorption capacity with increasing dye concentration with a maximum of 90% dye removal. The monolayer adsorption capacity of magnetic hollow spheres (0.05 g) for NR in the concentration range studied, as calculated from the Langmuir isotherm model at 25 degrees C and pH 6, was found to be 105 mg g(-1). Adsorption kinetic followed pseudo-second-order reaction kinetics. Thermodynamic study showed that the adsorption processes are spontaneous and endothermic. The combination of the superior adsorption and the magnetic properties of Fe(3)O(4) nanospheres can be useful as a powerful separation tool to deal with environmental pollution. Copyright 2010 Elsevier B.V. All rights reserved.
          Article 0 comments Cited 84 times – based on 0 reviews     Review now
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Superparamagnetic Fe3O4 nanoparticles as catalysts for the catalytic oxidation of phenolic and aniline compounds.

            Xiaoli Zhao, Yaqi Cai, Samuel Zhang … (2009)
            Fe(3)O(4) magnetic nanoparticles (MNPs) with diameters about 10nm were synthesized successfully and used to remove phenol and aniline from aqueous solution. The results showed that phenol and aniline could be eliminated easily from solution under acidic and neutral conditions in the presence of MNPs and H(2)O(2). When the concentrations of Fe(3)O(4) MNPs and H(2)O(2) were 5gL(-1) and 1.2M, respectively, phenol and aniline could be removed completely after 6h of reaction at 308K, and the total organic carbon (TOC) abatement efficiency for phenol and aniline were 42.79% and 40.38%. Some intermediates such as formic acid, acetic acid, fumaric acid and hydroquinone were detected during reaction. Fe(3)O(4) MNPs exhibited good stability and reusability, also showed excellent catalysis ability to eliminate some substituted phenolic and aniline compounds from solution. Fe(3)O(4) MNPs had good superparamagnetism and was readily separated from solution by applying an external magnetic field. Finally we proposed that phenol and aniline might be degraded by the hydroxyl free radicals (.OH) released from H(2)O(2) in the presence of Fe(3)O(4) MNPs as catalysts.
            Article 0 comments Cited 76 times – based on 0 reviews     Review now
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Adsorption mechanisms of removing heavy metals and dyes from aqueous solution using date pits solid adsorbent.

              Mohammad A Al-Ghouti, Juiki Li, Yousef Salamh … (2010)
              A potential usefulness of raw date pits as an inexpensive solid adsorbent for methylene blue (MB), copper ion (Cu(2+)), and cadmium ion (Cd(2+)) has been demonstrated in this work. This work was conducted to provide fundamental information from the study of equilibrium adsorption isotherms and to investigate the adsorption mechanisms in the adsorption of MB, Cu(2+), and Cd(2+) onto raw date pits. The fit of two models, namely Langmuir and Freundlich models, to experimental data obtained from the adsorption isotherms was checked. The adsorption capacities of the raw date pits towards MB and both Cu(2+) and Cd(2+) ions obtained from Langmuir and Freundlich models were found to be 277.8, 35.9, and 39.5 mg g(-1), respectively. Surface functional groups on the raw date pits surface substantially influence the adsorption characteristics of MB, Cu(2+), and Cd(2+) onto the raw date pits. The Fourier transform infrared spectroscopy (FTIR) studies show clear differences in both absorbances and shapes of the bands and in their locations before and after solute adsorption. Two mechanisms were observed for MB adsorption, hydrogen bonding and electrostatic attraction, while other mechanisms were observed for Cu(2+) and Cd(2+). For Cu(2+), binding two cellulose/lignin units together is the predominant mechanism. For Cd(2+), the predominant mechanism is by binding itself using two hydroxyl groups in the cellulose/lignin unit. 2009 Elsevier B.V. All rights reserved.
              Article 0 comments Cited 57 times – based on 0 reviews     Review now
                Bookmark
                All references

                Author and article information

                Journal
                Journal ID (nlm-ta): Iranian J Environ Health Sci Eng
                Journal ID (iso-abbrev): Iranian J Environ Health Sci Eng
                Title: Iranian Journal of Environmental Health Science & Engineering
                Publisher: BioMed Central
                ISSN (Print): 1735-1979
                ISSN (Electronic): 1735-2746
                Publication date Collection: 2013
                Publication date (Electronic): 17 February 2013
                Volume: 10
                Issue: 1
                Page: 19
                Affiliations
                [1 ]Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
                [2 ]Faculty of Medical sciences, Faculty of Medical sciences, Tarbiat Modares University, Tehran, Iran
                [3 ]Center for Water Quality Research (CWOR), Intitute for Environmental Research (IER), Tehran, University of Medical Sciences, Tehran, Iran
                Article
                Publisher ID: 1735-2746-10-19
                DOI: 10.1186/1735-2746-10-19
                PMC ID: 3606349
                PubMed ID: 23414171
                SO-VID: 89a0ef6f-d9da-4fdb-bc7b-3d0645c60184
                Copyright © Copyright ©2013 Kakavandi et al; licensee BioMed Central Ltd.
                License:

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : 31 July 2012
                Date accepted : 13 January 2013
                Categories
                Subject: Research Article

                ScienceOpen disciplines: Occupational & Environmental medicine
                Keywords: fe3o4-activated carbon magnetic nanoparticles,adsorption,aniline,kinetics,thermodynamic
                Data availability:
                ScienceOpen disciplines: Occupational & Environmental medicine
                Keywords: fe3o4-activated carbon magnetic nanoparticles, adsorption, aniline, kinetics, thermodynamic

                Comments

                Comment on this article

                scite_

                Similar content455

                See all similar

                Cited by27

                See all cited by

                Most referenced authors175

                See all reference authors