title: Self-purification of marine environments for heavy metals: a study on removal of lead(II) and copper(II) by cuttlebone.
abstract: The aim of this study was to determine adsorption properties of cuttlebone, cuttlefish bone as dead biomass, for lead(II) and copper(II) from aqueous solutions. Adsorption kinetic, isotherm and effect of pH (in the range of 2.0-7.0) were investigated in a single component batch system at room temperature (25 ± 1 °C). The heavy metal adsorption by cuttlebone was relatively rapid and reached equilibrium in 120 min in all the cases. The pseudo-second order rate equation described the adsorption kinetic of both the ions. The adsorption capacities of Pb2+and Cu2+were constantly increased by pH and the optimum condition of pH was determined to be 7.0. The Freundlich model was better fitted than other models with the isotherm data, indicating sorption of the metal ions in a heterogeneous surface. According to the Langmuir model, the maximum adsorption capacities of cuttlebone for Pb2+and Cu2+were determined to be 45.9 and 39.9 mg/g, respectively. The results indicated cuttlebone as a promising adsorbent for Pb2+and Cu2+, which presents a high capacity of self-purification in marine environments and also can be used for removal of the metal ions from water and wastewater.
authors.affiliation: The Persian Gulf Marine Biotechnology Research Center, Bushehr University of Medical Sciences, Bushehr, Iran; Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran; Systems Environmental Health, Oil, Gas and Energy Research Center, Bushehr University of Medical Sciences, Bushehr, Iran.
authors.forename: Sina
authors.initials: S
authors.lastname: Dobaradaran
authors.affiliation: The Persian Gulf Tropical Medicine Research Center, Bushehr University of Medical Sciences, Bushehr, Iran.
authors.forename: Iraj
authors.initials: I
authors.lastname: Nabipour
authors.affiliation: Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran.
authors.forename: Mozhgan
authors.initials: M
authors.lastname: Keshtkar
authors.affiliation: Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran.
authors.forename: Fatemeh Faraji
authors.initials: FF
authors.lastname: Ghasemi
authors.affiliation: Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran.
authors.forename: Tayebeh
authors.initials: T
authors.lastname: Nazarialamdarloo
authors.affiliation: Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran.
authors.forename: Farzaneh
authors.initials: F
authors.lastname: Khalifeh
authors.affiliation: Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran.
authors.forename: Marjan
authors.initials: M
authors.lastname: Poorhosein
authors.affiliation: Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Mehrnoosh
authors.initials: M
authors.lastname: Abtahi
authors.affiliation: Department of Health Sciences, School of Health, Safety and Environment, Shahid Beheshti University of Medical Sciences, Tehran, Iran E-mail: r.saeedi@sbmu.ac.ir.
authors.forename: Reza
authors.initials: R
authors.lastname: Saeedi
mesh_terms: D000327:Adsorption; D000818:Animals; D003300:Copper; D049832:Decapodiformes; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D007854:Lead; D019216:Metals, Heavy / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D007854:Lead; D003300:Copper