title: Studies of Pb2+ adsorption by Moringa oleifera Lam. seeds from an aqueous medium in a batch system.
abstract: The efficiency of Moringa (Moringa oleifera Lam.) seeds for removing lead ions (Pb(2+)) from water was evaluated. Parameters such as solution pH, adsorbent mass, contact time between solution and adsorbent, isotherms, thermodynamic, kinetics, and desorption were evaluated. The maximum adsorption capacity of the biosorbent was found to be 12.24 mg g(-1). In order to verify the effectiveness of this material, comparative studies were performed with activated carbon under the same optimal conditions for the construction of isotherms and the desorption process. Average desorption rate values led to the assumption that a strong interaction took place between the adsorbents and the metal ions. Thus, it has been concluded that the biosorbent studied herein can be considered very effective and feasible for remediating Pb(2+)-contaminated solutions, since this material is itself an untreated and low-cost byproduct.
authors.affiliation: Universidade Estadual do Oeste do Paraná, Unioeste, Centro de Ciências Agrárias, Rua Pernambuco, 1777, Marechal Cândido Rondon, PR, 85960-000, Brazil E-mail: mel_meneghel@hotmail.com.
authors.forename: Ana Paula
authors.initials: AP
authors.lastname: Meneghel
authors.affiliation: Universidade Estadual do Oeste do Paraná, Unioeste, Centro de Ciências Agrárias, Rua Pernambuco, 1777, Marechal Cândido Rondon, PR, 85960-000, Brazil E-mail: mel_meneghel@hotmail.com.
authors.forename: Affonso Celso
authors.initials: AC
authors.lastname: Gonçalves
authors.affiliation: Universidade Estadual de Londrina, UEL, Centro de Ciências Exatas, Departamento de Química, Rodovia Celso Garcia Cid Pr 445 Km 380, Campus Universitário, Londrina, PR, 86051-990, Brazil.
authors.forename: César Ricardo Teixeira
authors.initials: CR
authors.lastname: Tarley
authors.affiliation: Universidade Estadual do Oeste do Paraná, Unioeste, Centro de Ciências Agrárias, Rua Pernambuco, 1777, Marechal Cândido Rondon, PR, 85960-000, Brazil E-mail: mel_meneghel@hotmail.com.
authors.forename: José Renato
authors.initials: JR
authors.lastname: Stangarlin
authors.affiliation: Universidade Estadual do Oeste do Paraná, Unioeste, Centro de Ciências Agrárias, Rua Pernambuco, 1777, Marechal Cândido Rondon, PR, 85960-000, Brazil E-mail: mel_meneghel@hotmail.com.
authors.forename: Fernanda
authors.initials: F
authors.lastname: Rubio
authors.affiliation: Universidade Estadual do Oeste do Paraná, Unioeste, Centro de Ciências Agrárias, Rua Pernambuco, 1777, Marechal Cândido Rondon, PR, 85960-000, Brazil E-mail: mel_meneghel@hotmail.com.
authors.forename: Herbert
authors.initials: H
authors.lastname: Nacke
mesh_terms: D000327:Adsorption; D006863:Hydrogen-Ion Concentration; D007854:Lead / Q000378:metabolism*; D029588:Moringa oleifera / Q000378:metabolism*; D012639:Seeds / Q000378:metabolism*
chemical_list: D007854:Lead