title: Polypyrrole-coated magnetic nanoparticles as an efficient adsorbent for RB19 synthetic textile dye: Removal and kinetic study.
abstract: The present work deals with the first attempt to study the removal of synthetic textile dye, reactive blue 19 (RB19), using the magnetic Fe3O4 nanoparticles modified by pyrrole (PPy@Fe3O4 MNPs) as an efficient adsorbent. The nanoadsorbent was synthesized using chemical co-precipitation. Scanning electron microscopy and FT-IR were used to characterize nanoparticles. Factors affecting the dye adsorption including the pH of the dye solution, amount of adsorbent and contact time were also further investigated. Sorption of the RB19 on PPy@Fe3O4 MNPs reached to equilibrium at contact time less than 10 min and fitted well to the Langmuir adsorption model with a maximum adsorption capacity of 112.36 mg g(-1). Experiments for adsorption kinetic were carried out and the data fitted well according to a pseudo-second-order kinetic model. Moreover, the MNPs were recovered with over than 90% efficiency using methanol as elution agent.
authors.affiliation: Analytical Chemistry Research Group, Research Institute of Petroleum Industry (RIPI), P.O. Box 14665-137, Tehran, Iran. Electronic address: shanehsazm@ripi.ir.
authors.forename: Maryam
authors.initials: M
authors.lastname: Shanehsaz
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, K.N. Toosi University of Technology, Tehran, Iran. Electronic address: s.seidi@kntu.ac.ir.
authors.forename: Shahram
authors.initials: S
authors.lastname: Seidi
authors.affiliation: Analytical Chemistry Research Group, Research Institute of Petroleum Industry (RIPI), P.O. Box 14665-137, Tehran, Iran.
authors.forename: Yousefali
authors.initials: Y
authors.lastname: Ghorbani
authors.affiliation: Analytical Chemistry Research Group, Research Institute of Petroleum Industry (RIPI), P.O. Box 14665-137, Tehran, Iran.
authors.forename: Seyed Mohammad Reza
authors.initials: SM
authors.lastname: Shoja
authors.affiliation: Department of Organic Colorants, Institute for Color Science and Technology, 1668814811 Tehran, Iran; Center of Excellence for Color Science and Technology, Institute for Color Science and Technology, 16656118481 Tehran, Iran.
authors.forename: Shohre
authors.initials: S
authors.lastname: Rouhani
mesh_terms: D000327:Adsorption; D000880:Anthraquinones / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D058185:Magnetite Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D055672:Static Electricity; D013696:Temperature; D013784:Textiles; D013997:Time Factors; D014961:X-Ray Diffraction
chemical_list: D000880:Anthraquinones; D004396:Coloring Agents; D058185:Magnetite Nanoparticles; D011108:Polymers; D011758:Pyrroles; C067635:polypyrrole; C024758:Remazol Brilliant Blue R
keywords: Adsorption; Magnetic nanoparticle; Pyrrole; Reactive blue 19; Textile dye