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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ethanol addition as a strategy for start-up and acclimation of an AnSBBR for the treatment of landfill leachate

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Author(s):
Contrera, Ronan Cleber [1] ; Sarti, Arnaldo [2] ; Avezum Alves de Castro, Marcus Cesar [3] ; Foresti, Eugenio [4] ; Zaiat, Marcelo [4] ; Schalch, Valdir [5]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Escola Politecn, Dept Engn Hidraul & Ambiental PHD, BR-05508900 Sao Paulo - Brazil
[2] HagaPlan Engn & Serv, BR-01037010 Sao Paulo - Brazil
[3] Univ Estadual Paulista Julio de Mesquita Filho UN, BR-13506900 Rio Claro, SP - Brazil
[4] Univ Sao Paulo, Ctr Pesquisa Desenvolvimento & Inovacao Engn Ambi, Dept Hidraul & Saneamento SHS, Lab Proc Biol, Escola Engn Sao Carlos, BR-13563120 Sao Carlos, SP - Brazil
[5] Univ Sao Paulo, Escola Engn Sao Carlos, Dept Hidraul & Saneamento SHS, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: Process Biochemistry; v. 48, n. 11, p. 1767-1777, NOV 2013.
Web of Science Citations: 8
Abstract

This study evaluated the ethanol addition as a strategy for start-up and acclimation of a pilot scale (1300L) anaerobic sequencing batch biofilm reactor (AnSBBR) for the treatment of municipal landfill leachate with seasonal biodegradability variations. The treatment was carried out at ambient temperature (23.8 +/- 2.1 C) in the landfill area. In a first attempt, the leachate collected directly from landfill showed to be predominantly recalcitrant to anaerobic treatment and the acclimation was not possible. In a second attempt, adding ethanol to leachate, the reactor was successfully acclimated. After acclimation, without ethanol addition, the CODTotal influent ranged from 4970 to 13040 mg L-1 and the removal efficiencies ranged from 12.1% to 70.7%. A final test was carried out increasing the ammonia and free-ammonia concentration from 2486 mgN L-1 and 184 mgN L-1 to 4519 mgN L-1 and 634 mgN L-1, respectively, with no expressive inhibition verified. The start-up strategy was found to be feasible, providing the acclimation of the biomass in the AnSBBR, and maintaining the biomass active even when the leachate was recalcitrant. (C) 2013 Elsevier Ltd. All rights reserved. (AU)