title: Performance of iron nano particles and bimetallic Ni/Fe nanoparticles in removal of amoxicillin trihydrate from synthetic wastewater.
abstract: In the present study, the degradation of amoxicillin trihydrate (AMT), using synthesized nanoscale zero-valent iron (nZVI) and bimetallic Fe and Ni nanoparticles stabilized with chitosan (Cs-Fe/Ni), in water was investigated. A central composite design combined with response surface methodology and optimization was utilized for maximizing the AMT reduction by the nanoparticles-water system. The importance of the various variables and their interactions were analyzed using analysis of variance and t-test. The effects of independent parameters were tested and the results showed that the initial concentration of AMT, pH, and nanoparticles dosage were all significant factors. Field-emission scanning electron microscopy images indicated that chitosan acts as a stabilizer preventing the agglomeration of nanoparticles. Also, chitosan and Ni increased the specific surface area of Cs-Fe/Ni. X-ray diffraction confirmed the existence of Fe(0) in fresh samples and the presence of Fe(II) and Fe(III) after the reaction with AMT. This study demonstrates that the nZVI technology could be a promising approach for antibiotic wastewater treatment.
authors.affiliation: Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran E-mail: ha.daraei@sbmu.ac.ir.
authors.forename: Ahmad Reza
authors.initials: AR
authors.lastname: Yazdanbakhsh
authors.affiliation: Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran E-mail: ha.daraei@sbmu.ac.ir.
authors.forename: Hasti
authors.initials: H
authors.lastname: Daraei
authors.affiliation: Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran E-mail: ha.daraei@sbmu.ac.ir.
authors.forename: Mohamad
authors.initials: M
authors.lastname: Rafiee
authors.affiliation: Targeted Drug Delivery Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
authors.forename: Hosein
authors.initials: H
authors.lastname: Kamali
mesh_terms: D000658:Amoxicillin / Q000737:chemistry*; D000900:Anti-Bacterial Agents / Q000737:chemistry; D048271:Chitosan / Q000737:chemistry*; D007501:Iron / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D000658:Amoxicillin; D000900:Anti-Bacterial Agents; D048271:Chitosan; D007501:Iron; D009532:Nickel; D062065:Wastewater; D014874:Water Pollutants, Chemical