Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.biortech.2006.10.048
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dc.titleSimultaneous ammonium-nitrogen and copper removal, and copper recovery using nitrifying biofilm from the Ultra-Compact Biofilm Reactor
dc.contributor.authorLee, L.Y.
dc.contributor.authorOng, S.L.
dc.contributor.authorNg, H.Y.
dc.contributor.authorHu, J.Y.
dc.contributor.authorKoh, Y.N.
dc.date.accessioned2014-10-07T06:27:52Z
dc.date.available2014-10-07T06:27:52Z
dc.date.issued2008-09
dc.identifier.citationLee, L.Y., Ong, S.L., Ng, H.Y., Hu, J.Y., Koh, Y.N. (2008-09). Simultaneous ammonium-nitrogen and copper removal, and copper recovery using nitrifying biofilm from the Ultra-Compact Biofilm Reactor. Bioresource Technology 99 (14) : 6614-6620. ScholarBank@NUS Repository. https://doi.org/10.1016/j.biortech.2006.10.048
dc.identifier.issn09608524
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/84671
dc.description.abstractSimultaneous ammonium-nitrogen (NH4 + s(-) N) and copper removal, and copper recovery in synthetic wastewater using nitrifying biofilm from an ultra-compact biofilm reactor (UCBR) was demonstrated in batch studies, which consisted of three phases: Phase 1 for NH4 + s(-) N and copper removals, Phase 2 for copper recovery, and Phase 3 for NH4 + s(-) N removal. The results showed that more than 96.3% of copper was removed within 60 min, while 60.1% of the adsorbed copper was recovered through rinsing the biofilms with 0.1 mM of ethylenediaminetetraacetic acid (EDTA). The nitrifying biofilm was able to adsorb 0.245 mg of copper/g of biofilms. After recovery treatment, 29.4% of copper remained bound within the nitrifying biofilms. No significant inhibitory effects towards NH4 + s(-) N removal in the presence of 0.92 mg copper/L was noted in Phase 1 compared with the control test. However, lower initial pH condition in the recovery process and the accumulation of copper on the biofilm led to 50% inhibition on NH4 + s(-) N removal efficiency in the subsequent phase. © 2007 Elsevier Ltd. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.biortech.2006.10.048
dc.sourceScopus
dc.subjectAmmonia-nitrogen removal
dc.subjectCopper recovery
dc.subjectExtracellular polymer substance
dc.subjectNitrifying biofilm
dc.typeArticle
dc.contributor.departmentDIVISION OF ENVIRONMENTAL SCIENCE & ENGG
dc.contributor.departmentCIVIL ENGINEERING
dc.description.doi10.1016/j.biortech.2006.10.048
dc.description.sourcetitleBioresource Technology
dc.description.volume99
dc.description.issue14
dc.description.page6614-6620
dc.description.codenBIRTE
dc.identifier.isiut000257150800082
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