title: First-order kinetics of landfill leachate treatment in a pilot-scale anaerobic sequence batch biofilm reactor.
abstract: This paper reports the kinetics evaluation of landfill leachate anaerobic treatment in a pilot-scale Anaerobic Sequence Batch Biofilm Reactor (AnSBBR). The experiment was carried out at room temperature (23.8 ± 2.1 °C) in the landfill area in São Carlos-SP, Brazil. Biomass from the bottom of a local landfill leachate stabilization pond was used as inoculum. After acclimated and utilizing leachate directly from the landfill, the AnSBBR presented efficiency over 70%, in terms of COD removal, with influent COD ranging from 4825 mg L(-1) to 12,330 mg L(-1). To evaluate the kinetics of landfill leachate treatment, temporal profiles of CODFilt. concentration were performed and a first-order kinetics model was adjusted for substrate consumption, obtaining an average k1 = 4.40 × 10(-5) L mgTVS(-1) d(-1), corrected to 25 °C. Considering the temperature variations, a temperature-activity coefficient θ = 1.07 was obtained. Statistical "Randomness" and "F" tests were used to successfully validate the model considered. Thus, the results demonstrate that the first-order kinetic model is adequate to model the anaerobic treatment of the landfill leachate in the AnSBBR.
authors.affiliation: Departamento de Engenharia Hidráulica e Ambiental (PHD), Escola Politécnica (EP), Universidade de São Paulo (USP), Avenida Prof. Almeida Prado, 83 trav. 2, Cidade Universitária, CEP: 05508-900 São Paulo, SP, Brazil. Electronic address: contrera@usp.br.
authors.forename: Ronan Cleber
authors.initials: RC
authors.lastname: Contrera
authors.affiliation: Departamento de Engenharia Hidráulica e Ambiental (PHD), Escola Politécnica (EP), Universidade de São Paulo (USP), Avenida Prof. Almeida Prado, 83 trav. 2, Cidade Universitária, CEP: 05508-900 São Paulo, SP, Brazil. Electronic address: katita.cris@gmail.com.
authors.forename: Katia Cristina
authors.initials: KC
authors.lastname: da Cruz Silva
authors.affiliation: Departamento de Engenharia Hidráulica e Ambiental (PHD), Escola Politécnica (EP), Universidade de São Paulo (USP), Avenida Prof. Almeida Prado, 83 trav. 2, Cidade Universitária, CEP: 05508-900 São Paulo, SP, Brazil. Electronic address: dmmorita@usp.br.
authors.forename: Dione Mari
authors.initials: DM
authors.lastname: Morita
authors.affiliation: Escola de Engenharia Mauá, Instituto Mauá de Tecnologia (EEM-IMT), Praça Mauá 1, CEP: 09580-900 São Caetano do Sul, SP, Brazil. Electronic address: rodrigues@maua.br.
authors.forename: José Alberto
authors.initials: JA
authors.lastname: Domingues Rodrigues
authors.affiliation: Laboratório de Processos Biológicos (LPB), Centro de Pesquisa, Desenvolvimento e Inovação em Engenharia Ambiental, Escola de Engenharia de São Carlos (EESC), Universidade de São Paulo (USP), Engenharia Ambiental, Bloco 4-F, Av. João Dagnone, 1100, Santa Angelina, CEP: 13.563-120 São Carlos, SP, Brazil. Electronic address: zaiat@sc.usp.br.
authors.forename: Marcelo
authors.initials: M
authors.lastname: Zaiat
authors.affiliation: Departamento de Hidráulica e Saneamento (SHS), Escola de Engenharia de São Carlos (EESC), Universidade de São Paulo (USP), Avenida Trabalhador São-carlense, 400, Centro, CEP: 13566-590 São Carlos, SP, Brazil. Electronic address: vschalch@sc.usp.br.
authors.forename: Valdir
authors.initials: V
authors.lastname: Schalch
mesh_terms: D000693:Anaerobiosis; D018441:Biofilms / Q000254:growth & development*; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D001938:Brazil; D007700:Kinetics; D017020:Methanosarcina / Q000254:growth & development; D008962:Models, Theoretical; D010865:Pilot Projects; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000295:instrumentation / Q000379:methods
chemical_list: D014874:Water Pollutants, Chemical
keywords: Anaerobic sequence batch biofilm reactor; Anaerobic treatment; First-order kinetic model; Landfill leachate; Temperature–activity coefficient