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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.)

Pollutant removal, electricity generation and microbial community in an electrochemical membrane bioreactor during co-treatment of sewage and landfill leachate

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Fonseca Pierangeli, Gabrielle Maria [1] ; Ragio, Rodrigo Almeria [2] ; Benassi, Roseli Frederigi [2] ; Gregoracci, Gustavo Bueno [1] ; Subtil, Eduardo Lucas [2]
Total Authors: 5
[1] Univ Fed Sao Paulo, Inst Marine Sci, Santos, SP - Brazil
[2] Fed Univ ABC, Ctr Engn Modeling & Appl Social Sci, Santo Andre, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Web of Science Citations: 0

A three-chamber electrochemical membrane bioreactor (EMBR) with a microbial fuel cell (MFC) was employed to co-treat synthetic wastewater and 20% landfill leachate (LFL) and produce electrical energy. We observed the following removal rates: 98 +/- 1% of BOD5,20, 86 +/- 5% of COD, 79 +/- 2% of N-NH4+, 72 +/- 6% of DOC and 43 +/- 3% of N-total, while voltage generation was 463 +/- 41 mV. The EMBR compartments showed distinct microbial communities and inferred metabolic pathways. Acinetobacter spp. was the most abundant bacteria in the anodic biofilm and has an important role in energy generation, as noted elsewhere. Meanwhile, the high abundance of Nitrospira spp. in the cathodic biofilm indicated its importance in the nitrification process in this system, essential for treating matrices with high-nitrogen content, such as LFL. Important abundant metabolic pathways inferred in the EMBR also included aerobic chemoheterotrophs, fermenters, degraders of aromatic compounds/hydrocarbon, and denitrifiers. Clearly, metabolic groups showed that microbial communities developed in the EMBR can degrade organic matter and remove toxic compounds (e.g., aromatic compounds) and nitrogen from LFL while producing energy. Furthermore, this study indicated that a MBR coupled with MFC create a great system for the co-treatment of LFL with wastewater, achieving both pollutant removal and electrical energy generation. (AU)

FAPESP's process: 16/23684-0 - A new approach to wastewater treatment and water and energy recovery: development of an electrochemical conductive membrane bioreactor (EcMBR) operated under Simultaneous Nitrification and Denitrification (SND) condition
Grantee:Eduardo Lucas Subtil
Support Opportunities: Regular Research Grants
FAPESP's process: 17/10355-1 - Relation between limnological variables (abiotic and biotic) and seasonality in CH4 and CO2 gas fluxes in the fluvial regions of the Billings and Guarapiranga dams (São Paulo - SP)
Grantee:Roseli Frederigi Benassi
Support Opportunities: Regular Research Grants