title: Evaluation of different isotherm models, kinetic, thermodynamic, and copper biosorption efficiency of Lobaria pulmonaria (L.) Hoffm.
abstract: The biosorption characteristics of Cu(II) ions from aqueous solution using Lobaria pulmonaria (L.) Hoffm. biomass were investigated. The biosorption efficiency of Cu(II) onto biomass was significantly influenced by the operating parameters. The maximum biosorption efficiency of L. pulmonaria was 65.3% at 10 mg/L initial metal concentration for 5 g/L lichen biomass dosage. The biosorption of Cu(II) ions onto biomass fits the Langmuir isotherm model and the pseudo-second-order kinetic model well. The thermodynamic parameters indicate the feasibility and exothermic and spontaneous nature of the biosorption. The effective desorption achieved with HCl was 96%. Information on the nature of possible interactions between the functional groups of the L. pulmonaria biomass and Cu(II) ions was obtained via Fourier transform infrared (FTIR) spectroscopy. The results indicated that the carboxyl (-COOH) and hydroxyl (-OH) groups of the biomass were mainly involved in the biosorption of Cu(II) onto L. pulmonaria biomass. The L. pulmonaria is a promising biosorbent for Cu(lI) ions because of its availability, low cost, and high metal biosorption and desorption capacities.
  
  
  CONCLUSIONS
  Lobaria pulmonaria is a promising biosorbent for Cu(II) ions because of its availability, low cost, and high metal biosorption and desorption capacities. To the best of our knowledge, this is the first paper on the biosorption Cu by L. pulmonaria.
authors.forename: Zeynep
authors.initials: Z
authors.lastname: Kiliç
authors.forename: Orhan
authors.initials: O
authors.lastname: Atakol
authors.forename: Sümer
authors.initials: S
authors.lastname: Aras
authors.forename: Demet
authors.initials: D
authors.lastname: Cansaran-Duman
authors.forename: Pelin
authors.initials: P
authors.lastname: Celikkol
authors.forename: Emel
authors.initials: E
authors.lastname: Emregul
mesh_terms: D001203:Ascomycota / Q000378:metabolism*; D001673:Biodegradation, Environmental; D003300:Copper / Q000737:chemistry / Q000378:metabolism*; D008962:Models, Theoretical; D013816:Thermodynamics; D014865:Waste Disposal, Fluid
chemical_list: D003300:Copper