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dc.contributor.authorCheng, Tuoyuan
dc.contributor.authorWei, Chunhai
dc.contributor.authorLeiknes, TorOve
dc.date.accessioned2017-06-05T06:02:24Z
dc.date.available2017-06-05T06:02:24Z
dc.date.issued2017-05-29
dc.identifier.citationCheng T, Wei C-H, Leiknes T (2017) Polishing of anaerobic secondary effluent by Chlorella vulgaris under low light intensity. Bioresource Technology 241: 360–368. Available: http://dx.doi.org/10.1016/j.biortech.2017.05.149.
dc.identifier.issn0960-8524
dc.identifier.doi10.1016/j.biortech.2017.05.149
dc.identifier.urihttp://hdl.handle.net/10754/624043
dc.description.abstractTo investigate anaerobic secondary effluent polishing by microalgae (Chlorella vulgaris) under low light intensity (14 μmol/m2/s), bubbling column reactors were operated in batches of 8 d with initial ammonium nitrogen 10-50 mg/L, initial phosphate phosphorus 2-10 mg/L and microalgal seed 40 mg/L. Maximum microalgal biomass and minimum generation time were 370.9 mg/L and 2.5 d, respectively. Nitrogen removal (maximum 99.6%) was mainly attributed to microalgal growth rate, while phosphorus removal (maximum 49.8%) was related to microalgal growth rate, cell phosphorus content (maximum 1.5%) and initial nutrients ratio. Dissolved microalgal organics release in terms of chemical oxygen demand (maximum 63.2 mg/L) and hexane extractable material (i.e., oil and grease, maximum 8.5 mg/L) was firstly reported and mainly affected by nitrogen deficiency and deteriorated effluent quality. Ultrafiltration critical flux (16.6-39.5 L/m2/h) showed negative linear correlation to microalgal biomass. Anaerobic membrane bioreactor effluent polishing showed similar results with slight inhibition to synthetic effluent.
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0960852417308179
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Bioresource Technology. 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 Bioresource Technology, 26 May 2017. DOI: 10.1016/j.biortech.2017.05.149. © 2017. 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.subjectAnaerobic effluent
dc.subjectHexane extractable material
dc.subjectMicroalgae
dc.subjectNitrogen and phosphorus ratio
dc.subjectNutrients deficiency
dc.titlePolishing of anaerobic secondary effluent by Chlorella vulgaris under low light intensity
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalBioresource Technology
dc.eprint.versionPost-print
kaust.personCheng, Tuoyuan
kaust.personWei, Chunhai
kaust.personLeiknes, TorOve
refterms.dateFOA2019-05-26T00:00:00Z
dc.date.published-online2017-05-29
dc.date.published-print2017-10


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