Tejedor, S. and Ortiz, J.M. and Esteve-Núñez, A. (2017) Merging microbial electrochemical systems with electrocoagulation pretreatment for achieving a complete treatment of brewery wastewater. Chemical Engineering Journal, 330. pp. 1068-1074. ISSN 13858947
Full text not available from this repository. (Request a copy)Abstract
The limitations of microbial electrochemical technologies (METs) for full-scale wastewater treatment suggest the need for supporting these systems with a complementary technology. In this study we propose the integration of two electrochemical techniques to fully treat brewery effluents: an electrocoagulation (EC) and a microbial electrochemical fluidized bed reactor (ME-FBR). The EC pretreatment effectively removed most of the suspended matter and the nutrients of the effluent. We investigated the influence of current density and the reaction time on the EC performance. Varying these parameters allowed to fine-tune the removal of nutrients in this first treatment stage, obtaining removals from 30 to 98% of nitrogen and from 25 to 99% of phosphorus. The effluent of the EC was continuously fed into a ME-FBR (organic loading rate of 1.15 kg-COD m−3·d−1) with a fluidized and polarized anode (0.2 V vs Ag/AgCl) colonized with electroactive biofilm. This second step oxidized the soluble organic matter using a fluidized anode as terminal electron acceptor and harvesting current density values of 25 A m−3NRV. With this novel technological tandem, it was possible to remove a 93% of nitrogen, 98% of phosphorus, 93% of the total suspended solids, and >88% of the COD of a brewery wastewater.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QS Ecology Q Science > QD Chemistry Q Science > QR Microbiology |
| Depositing User: | Belén Barroeta |
| Date Deposited: | 07 Sep 2017 07:09 |
| Last Modified: | 08 Sep 2017 11:52 |
| URI: | http://eprints.imdea-agua.org:13000/id/eprint/795 |
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