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:: Volume 4, Issue 2 (Spring, 2017) ::
Environ. Health Eng. Manag. 2017, 4(2): 65-71 Back to browse issues page
Phosphate removal from aqueous solutions using polyaniline/ Ni0.5Zn0.5Fe2O4 magnetic nanocomposite
Mohammad Hossein Tarmahi, Farid Moeinpour *
Department of Chemistry, College of Science, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran , fmoeinpour52@iauba.ac.ir
Abstract:   (6798 Views)

Background: Phosphorus is an indispensable element for the growth of animals and plants. There are several environmental problems related to phosphate; therefore, the technical and economic methods of removing phosphate are of great importance. This study evaluated the efficiency of polyaniline/Ni0.5Zn0.5Fe2O4 magnetic nanocomposite in removing phosphate from aqueous environments.
Methods: The adsorbent was characterized by several methods, including X-ray diffraction (XRD), scanning electron microscopy (SEM), vibrating sample magnetometer (VSM), and Fourier transform infrared (FT-IR) spectroscopy. Then, the potential of the adsorbentto adsorb phosphate was investigated. The effects of the parameters of contact time (5-60 minutes), pH (3-9), adsorbent dosage (0.05-0.6 g), and initial phosphate concentration (2-100 mg/L) on the phosphate removal yield were studied. All phosphate ion concentrations were measured using the ammonium molybdate spectrophotometric method.
Results: The results showed that a time of 30 minutes, pH of 5, and adsorbent dose of 0.4 g were the optimum conditions for phosphate removal through adsorption. Increasing the initial concentration of phosphate from 2 to 100 mg/L decreased the removal efficiency from 90.3% to 32%. The experimental data was fitted well with the Freundlich isotherm model (R2 = 0.997).
Conclusion: Polyaniline/Ni0.5Zn0.5Fe2O4 magnetic nanocomposite removes phosphate from aqueous solutions with a simple and environmentally benign procedure. The maximum adsorption capacity based on Langmuir isotherm (R2 = 0.931) is 85.4 mg/g. This magnetic nanocomposite is applicable in managing water resource pollution caused by phosphate ions.

Keywords: Adsorption, Phosphates, Nanocomposites, Polyaniline
eprint link: http://eprints.kmu.ac.ir/id/eprint/26253
Full-Text [PDF 888 kb]   (2674 Downloads)    
Type of Study: Original Article | Subject: Special
Received: 2017/05/8 | Accepted: 2017/05/8 | Published: 2017/05/8
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Tarmahi M H, Moeinpour F. Phosphate removal from aqueous solutions using polyaniline/ Ni0.5Zn0.5Fe2O4 magnetic nanocomposite. Environ. Health Eng. Manag. 2017; 4 (2) :65-71
URL: http://ehemj.com/article-1-247-en.html

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Volume 4, Issue 2 (Spring, 2017) Back to browse issues page
Environmental Health Engineering And Management Journal Environmental Health Engineering And Management Journal
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