First-order kinetics of landfill leachate treatment in a pilot-scale anaerobic sequence batch biofilm reactor

Autor(es)

Contrera, Ronan Cleber ^[1] ; da Cruz Silva, Katia Cristina ^[1] ; Morita, Dione Mari ^[1] ; Domingues Rodrigues, Jose Alberto ^[2] ; Zaiat, Marcelo ^[3] ; Schalch, Valdir ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Engn Hidraul & Ambiental PHD, Escola Politecn EP, BR-05508900 Sao Paulo - Brazil

^[2] Escola Engn Maua, Inst Maua Tecnol EEM IMT, BR-09580900 Sao Caetano do Sul, SP - Brazil

^[3] Univ Sao Paulo, Lab Proc Biol LPB, Ctr Pesquisa Desenvolvimento & Inovacao Engn Ambi, Escola Engn Sao Carlos EESC, BR-13563120 Sao Carlos, SP - Brazil

^[4] Univ Sao Paulo, Dept Hidraul & Saneamento SHS, Escola Engn Sao Carlos EESC, BR-13566590 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Environmental Management; v. 145, p. 385-393, DEC 1 2014.
• Citações Web of Science: 14

Resumo

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 degrees C) in the landfill area in Sao 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 k(1) = 4.40 x 10(-5) L mgTVS(-1) d(-1), corrected to 25 degrees C. Considering the temperature variations, a temperature-activity coefficient theta = 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. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 03/04812-8 - Avaliacao de reator anaerobio em batelada sequencial em conjunto com lodos ativados em batelada sequencial para tratamento biologico de liquidos percolados de aterros sanitarios.
• Beneficiário: Ronan Cleber Contrera
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 03/04602-3 - Avaliacao de reator anaerobio em batelada sequencial em conjunto com lodos ativados em batelada sequencial para tratamento biologico de liquidos percolados de aterros sanitarios.
• Beneficiário: Valdir Schalch
• Modalidade de apoio: Auxílio à Pesquisa - Regular