The effects of light regime on carbon cycling, nutrient removal, biomass yield, and polyhydroxybutyrate (PHB) production by a constructed photosynthetic consortium

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dc.contributor.authorWicker, Rebecca J.
dc.contributor.authorAutio, Heidi
dc.contributor.authorDaneshvar, Ehsan
dc.contributor.authorSarkar, Binoy
dc.contributor.authorBolan, Nanthi
dc.contributor.authorKumar, Vinod
dc.contributor.authorBhatnagar, Amit
dc.date.accessioned2022-09-28T15:05:43Z
dc.date.available2022-09-28T15:05:43Z
dc.date.issued2022-09-12
dc.description.abstractMicroalgae can add value to biological wastewater treatment processes by capturing carbon and nutrients and producing valuable biomass. Harvesting small cells from liquid media is a challenge easily addressed with biofilm cultivation. Three experimental photobioreactors were constructed from inexpensive materials (e.g. plexiglass, silicone) for hybrid liquid/biofilm cultivation of a microalgal-bacterial consortia in aquaculture effluent. Three light regimes (full-spectrum, blue-white, and red) were implemented to test light spectra as a process control. High-intensity full-spectrum light caused photoinhibition and low biomass yield, but produced the most polyhydroxybutyrate (PHB) (0.14 mg g−1); a renewable bioplastic polymer. Medium-intensity blue-white light was less effective for carbon capture, but removed up to 82 % of phosphorus. Low-intensity red light was the only net carbon-negative regime, but increased phosphorus (+4.98 mg/L) in the culture medium. Light spectra and intensity have potential as easily-implemented process controls for targeted wastewater treatment, biomass production, and PHB synthesis using photosynthetic consortia.en_UK
dc.identifier.citationWicker RJ, Autio H, Daneshvar E, et al., (2022) The effects of light regime on carbon cycling, nutrient removal, biomass yield, and polyhydroxybutyrate (PHB) production by a constructed photosynthetic consortium. Bioresource Technology, Volume 363, November 2022, Article number 127912en_UK
dc.identifier.issn0960-8524
dc.identifier.urihttps://doi.org/10.1016/j.biortech.2022.127912
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/18485
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectPhotosynthetic consortiaen_UK
dc.subjectBiological wastewater treatmenten_UK
dc.subjectNutrient removalen_UK
dc.subjectPhotobioreactoren_UK
dc.subjectPolyhydroxybutyrate (PHB)en_UK
dc.titleThe effects of light regime on carbon cycling, nutrient removal, biomass yield, and polyhydroxybutyrate (PHB) production by a constructed photosynthetic consortiumen_UK
dc.typeArticleen_UK

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