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dc.contributor.authorEl Kik, Olga
dc.contributor.authorIssa, Lea
dc.contributor.authorKaturi, Krishna
dc.contributor.authorSaikaly, Pascal
dc.contributor.authorAlameddine, Ibraim
dc.contributor.authorEl-Fadel, Mutasem
dc.contributor.authorSaikaly, Pascal
dc.date.accessioned2021-07-15T11:31:16Z
dc.date.available2021-07-15T11:31:16Z
dc.date.issued2021-07-02
dc.date.submitted2021-03-07
dc.identifier.citationEl Kik, O., Issa, L., Katuri, K. P., Saikaly, P. E., Alameddine, I., El-Fadel, M., & Saikaly, P. E. (2021). Coupling anaerobic fluidized membrane bioreactors with microbial electrolysis cells towards improved wastewater reuse and energy recovery. Journal of Environmental Chemical Engineering, 105974. doi:10.1016/j.jece.2021.105974
dc.identifier.issn2213-3437
dc.identifier.doi10.1016/j.jece.2021.105974
dc.identifier.urihttp://hdl.handle.net/10754/670241
dc.description.abstractAnaerobic Membrane Bioreactors (AnMBRs) combine the advantages of anaerobic processes and MBR technology to improve effluent quality and energy recovery. However, these systems are associated with operational challenges such as membrane fouling and loss of dissolved methane that increases operation and energy expenses. In this study, a new configuration was developed combining AnMBRs with Microbial Electrolysis Cells (MECs). The effectiveness of the coupled AnFMBR-MEC system was tested by monitoring several indicators during the treatment of synthetic wastewater. The new configuration exhibited a 25-day shorter startup period, a 56% enhanced average methane yield, and a reduced membrane fouling with a maximum transmembrane pressure value nearly 6.5 folds lower than that exhibited by the AnFMBR alone. AnFMBR-MEC had an average CE of 40% and both reactors achieved around 90% COD removal. Similar bacterial communities existed in both reactors but with different relative abundance and localization. In the AnFMBR-MEC, the Direct Interspecies Electron Transfer was the likely dominant route for acetate consumption due to the abundance of Geobacter and Methanosarcina on the granular activated carbon and in suspension. The new system offers a promising technology with less fouling and improved resource recovery from wastewater due to the presence of different environmental niches (GAC, anode, cathode) for microbial colonization and growth, which resulted in the reduction of biomass in suspension and the proliferation of electroactive bacteria and methanogens as biofilms.
dc.description.sponsorshipSpecial thanks are extended to Dar Al-Handasah (Shair & Partners) endowment for its support to the graduate programs in Engineering at the American University of Beirut. Also, this work was supported by Center Competitive Funding Program (FCC/1/1971-05-01) from King Abdullah University of Science and Technology (KAUST) to P.E.S.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S2213343721009519
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Environmental Chemical Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Environmental Chemical Engineering, [, , (2021-07)] DOI: 10.1016/j.jece.2021.105974 . © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleCoupling anaerobic fluidized membrane bioreactors with microbial electrolysis cells towards improved wastewater reuse and energy recovery
dc.typeArticle
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.identifier.journalJournal of Environmental Chemical Engineering
dc.rights.embargodate2023-07-01
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Civil and Environmental Engineering, American University of Beirut, Lebanon.
dc.contributor.institutionDepartment of Industrial & Systems Engineering, Khalifa University, United Arab Emirates.
dc.identifier.pages105974
kaust.personKaturi, Krishna
kaust.personSaikaly, Pascal
kaust.personSaikaly, Pascal
kaust.personSaikaly, Pascal
kaust.personSaikaly, Pascal
kaust.grant.numberFCC/1/1971-05-01
dc.date.accepted2021-06-29
refterms.dateFOA2021-07-15T11:50:44Z
dc.date.published-online2021-07-02
dc.date.published-print2021-10


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