title: Optimizing Cu(II) removal from aqueous solution by magnetic nanoparticles immobilized on activated carbon using Taguchi method.
abstract: This study synthesized magnetic nanoparticles (Fe(3)O(4)) immobilized on activated carbon (AC) and used them as an effective adsorbent for Cu(II) removal from aqueous solution. The effect of three parameters, including the concentration of Cu(II), dosage of Fe(3)O(4)/AC magnetic nanocomposite and pH on the removal of Cu(II) using Fe(3)O(4)/AC nanocomposite were studied. In order to examine and describe the optimum condition for each of the mentioned parameters, Taguchi's optimization method was used in a batch system and L9 orthogonal array was used for the experimental design. The removal percentage (R%) of Cu(II) and uptake capacity (q) were transformed into an accurate signal-to-noise ratio (S/N) for a 'larger-the-better' response. Taguchi results, which were analyzed based on choosing the best run by examining the S/N, were statistically tested using analysis of variance; the tests showed that all the parameters' main effects were significant within a 95% confidence level. The best conditions for removal of Cu(II) were determined at pH of 7, nanocomposite dosage of 0.1 gL(-1) and initial Cu(II) concentration of 20 mg L(-1) at constant temperature of 25 °C. Generally, the results showed that the simple Taguchi's method is suitable to optimize the Cu(II) removal experiments.
authors.affiliation: Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran E-mail: n.m.m.r.sohrabi@gmail.com.
authors.forename: Mohammad Javad
authors.initials: MJ
authors.lastname: Ebrahimi Zarandi
authors.affiliation: Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran E-mail: n.m.m.r.sohrabi@gmail.com.
authors.forename: Mahmoud Reza
authors.initials: MR
authors.lastname: Sohrabi
authors.affiliation: Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran E-mail: n.m.m.r.sohrabi@gmail.com.
authors.forename: Morteza
authors.initials: M
authors.lastname: Khosravi
authors.affiliation: Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran E-mail: n.m.m.r.sohrabi@gmail.com.
authors.forename: Nafiseh
authors.initials: N
authors.lastname: Mansouriieh
authors.affiliation: Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran E-mail: n.m.m.r.sohrabi@gmail.com.
authors.forename: Mehran
authors.initials: M
authors.lastname: Davallo
authors.affiliation: Department of New Materials, Institute of Science and High Technology and Environmental Science, Graduate University of Advanced Technology, Kerman, Iran.
authors.forename: Azita
authors.initials: A
authors.lastname: Khosravan
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000295:instrumentation / Q000379:methods*; D008280:Magnetics; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D058185:Magnetite Nanoparticles; D014874:Water Pollutants, Chemical; D002606:Charcoal; D003300:Copper