Journal
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
Volume 64, Issue -, Pages 211-219Publisher
ELSEVIER
DOI: 10.1016/j.jtice.2016.04.024
Keywords
Carbamazepine; Membrane bioreactor; Biodegradation; Electrooxidation; Removal
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Funding
- Ministry of International Relation (MRI) of the government of Quebec [MRI-UBR-122366]
- National Council of Science and Technology of Mexico (CONACYT) [C0005-2011-01-166316]
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This study aims to demonstrate that a combined system of membrane bioreactor (MBR) with electrooxidation (EO) can be a promising technology to treat compounds such as carbamazepine (CBZ). The MBR showed high capacity to remove the chemical oxygen demand (COD) and low capacity for the degradation (20% of removal), after 120 d of operation; which presumably indicates that CBZ was not toxic for microorganisms, despite its poor degradation. On the other hand, the EO system was capable to completely degrade CBZ (99.99% of removal). In addition, the MBR achieved 83% of conversion efficiency of NH4+ to NO3- or NO2-; and only 20.5% of PO4- removal. A toxicity test using Dapnia magna and Vibrio fischeri was carried out. Results indicated that MBR is an efficient method to decrease wastewater toxicity but during electrooxidation treatment higher toxicity was obtained, probably due to the generation of more toxic compounds than the initial pollutants. (C) 2016 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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