Title: Preparation and adsorption properties of chitosan-bound Fe3O4 magnetic nanoparticles for phenol removal from aqueous solution

Authors: Monireh Majlesi; Hasti Daraei

Addresses: Environmental and Occupational Hazards Control Research Center, Shahid Beheshti University of Medical Science, Tehran, Iran; Department of Environmental Health Engineering, Shahid Beheshti University of Medical, Sciences, Tehran, Iran ' Student Research Committee, Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Abstract: The purpose of this study was the investigation of the removal of phenol with magnetic chitosan nanoparticles. The magnetic chitosan nanoparticles were prepared by co-precipitation method and characterised by means of X-ray diffraction (XRD), field emission scanning electron microscope (FESM). Four independent variables, viz. contact time (10-90 min), pH of solution (2-10), initial phenol concentration (5-45 mg/l), and adsorbent dose (0.5-2.5 g/l) were transformed to coded values and quadratic model was built to predict the responses. Analysis of variance (ANOVA) and t-test statistics were used to test the significance of the independent variables and their interactions. The experimental results showed that the particles size was in the range of 30-50 nm. The results showed that the Fe3O4-chitosan removed over 84% phenol within 30 min, pH 4, and sorbent dosage 1.12 g. The central composite design showed that the fundamental parameters were pH and initial phenol concentration had the main effect on phenol removal.

Keywords: chitosan; adsorption properties; Fe3O4; iron oxide; magnetic nanoparticles; nanotechnology; phenol removal; aqueous solutions; ANOVA; t-test; particle size; sorbent dosage; central composite design; CCD; water pollution; water quality.

DOI: 10.1504/WRSTSD.2016.082207

World Review of Science, Technology and Sustainable Development, 2016 Vol.12 No.4, pp.371 - 380

Received: 10 Apr 2016
Accepted: 23 Nov 2016

Published online: 09 Feb 2017 *

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