Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0043-1354(03)00205-7
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dc.titleA new method for characterizing denitrifying phosphorus removal bacteria by using three different types of electron acceptors
dc.contributor.authorHu, J.Y.
dc.contributor.authorOng, S.L.
dc.contributor.authorNg, W.J.
dc.contributor.authorLu, F.
dc.contributor.authorFan, X.J.
dc.date.accessioned2014-10-07T06:25:54Z
dc.date.available2014-10-07T06:25:54Z
dc.date.issued2003-08
dc.identifier.citationHu, J.Y., Ong, S.L., Ng, W.J., Lu, F., Fan, X.J. (2003-08). A new method for characterizing denitrifying phosphorus removal bacteria by using three different types of electron acceptors. Water Research 37 (14) : 3463-3471. ScholarBank@NUS Repository. https://doi.org/10.1016/S0043-1354(03)00205-7
dc.identifier.issn00431354
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/84502
dc.description.abstractThis study investigated the characteristics of denitrifying phosphorus removal bacteria by using three different types of electron acceptors as well as the positive role of nitrite in phosphorus removal process. Denitrifying phosphorous removal bacteria was enriched under anaerobic-anoxic (A/A) condition. To understand A/A sludge better, sludge from two other sources were also studied. These include sludges obtained from a lab-scale anaerobic-anoxic-aerobic (A/A/O) system and a local sewage treatment plant. Three types of possible electron acceptors (oxygen, nitrate and nitrite) were examined for their roles in phosphorus uptake. The results obtained indicated that oxygen, nitrate and nitrite were able to act as electron acceptors successfully. This observation suggested that in addition to the two well-accepted groups of phosphorus removal bacteria (one can only utilize oxygen to take up phosphorus, PO, while the other can use both oxygen and nitrate, PON), a new group of phosphorus removal bacteria, PONn, which could use oxygen, nitrate or nitrite to take up phosphorus was identified. The relative population of these three types of bacteria could be calculated from results obtainable from phosphorus uptake batch experiments with either oxygen or nitrate or nitrite as electron acceptor. The results obtained in this study showed that A/A sludge had similar phosphorus removal performance as the A/A/O sludge. However, it has better denitrifying phosphorus removal capability, which was demonstrated by the relative population of the three groups of bacteria. The results also suggested that nitrite was not an inhibitor to phosphorus removal process. Instead, it is an alternative electron acceptor to oxygen or nitrate. © 2003 Elsevier Science Ltd. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/S0043-1354(03)00205-7
dc.sourceScopus
dc.subjectBiological phosphorus removal
dc.subjectDenitrifying phosphorus removal bacteria
dc.subjectNitrate
dc.subjectNitrite
dc.subjectOxygen
dc.subjectRelative population of polyP bacteria
dc.typeArticle
dc.contributor.departmentCIVIL ENGINEERING
dc.description.doi10.1016/S0043-1354(03)00205-7
dc.description.sourcetitleWater Research
dc.description.volume37
dc.description.issue14
dc.description.page3463-3471
dc.description.codenWATRA
dc.identifier.isiut000184168700019
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