Nitrogen oxidation consortia dynamics influence the performance of full-scale rotating biological contactors

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dc.contributor.authorFreeman, D.
dc.contributor.authorBajón Fernández, Yadira
dc.contributor.authorWilson, Andrea
dc.contributor.authorMcKew, Boyd A.
dc.contributor.authorWhitby, Corinne
dc.contributor.authorClark, Dave R.
dc.contributor.authorJefferson, Bruce
dc.contributor.authorCoulon, Frederic
dc.contributor.authorHassard, Francis
dc.date.accessioned2020-01-06T15:43:01Z
dc.date.available2020-01-06T15:43:01Z
dc.date.issued2019-12-19
dc.description.abstractAmmonia oxidising microorganisms (AOM) play an important role in ammonia removal in wastewater treatment works (WWTW) including rotating biological contactors (RBCs). Environmental factors within RBCs are known to impact the performance of key AOM, such that only some operational RBCs have shown ability for elevated ammonia removal. In this work, long-term treatment performance of seven full-scale RBC systems along with the structure and abundance of the ammonia oxidising bacteria (AOB) and archaea (AOA) communities within microbial biofilms were examined. Long term data showed the dominance of AOB in most RBCs, although two RBCs had demonstrable shift toward an AOA dominated AOM community. Next Generation Sequencing of the 16S rRNA gene revealed diverse evolutionary ancestry of AOB from RBC biofilms while nitrite-oxidising bacteria (NOBs) were similar to reference databases. AOA were more abundant in the biofilms subject to lower organic loading and higher oxygen concentration found at the distal end of RBC systems. Modelling revealed a distinct nitrogen cycling community present within high performing RBCs, linked to efficient control of RBC process variables (retention time, organic loading and oxygen concentration). We present a novel template for enhancing the resilience of RBC systems through microbial community analysis which can guide future strategies for more effective ammonia removal. To best of the author’s knowledge, this is the first comparative study reporting the use of next generation sequencing data on microbial biofilms from RBCs to inform effluent quality of small WWTW.en_UK
dc.identifier.citationFreeman D, Fernández YB, Wilson A, et al., (2020) Nitrogen oxidation consortia dynamics influence the performance of full-scale rotating biological contactors. Environment International, Volume 135, February 2020, Article number 105354en_UK
dc.identifier.cris25692685
dc.identifier.issn0160-4120
dc.identifier.urihttps://doi.org/10.1016/j.envint.2019.105354
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/14885
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectRotating biological contactoren_UK
dc.subjectNitrificationen_UK
dc.subjectWastewater treatmenten_UK
dc.subjectBiofilmen_UK
dc.subjectAmmonia oxidising bacteriaen_UK
dc.subjectAmmonia oxidising archaeaen_UK
dc.subjectAmmonia oxidising archaeaen_UK
dc.titleNitrogen oxidation consortia dynamics influence the performance of full-scale rotating biological contactorsen_UK
dc.typeArticleen_UK

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