White and infrared light continuous photobioreactors for resource recovery from poultry processing wastewater - a comparison
Article
Article Title | White and infrared light continuous photobioreactors for resource recovery from poultry processing wastewater - a comparison |
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ERA Journal ID | 4694 |
Article Category | Article |
Authors | Hulsen, Tim (Author), Hsieh, Kent (Author), Tait, Stephan (Author), Barry, Edward M. (Author), Puyol, Daniel (Author) and Batstone, Damien J. (Author) |
Journal Title | Water Research |
Journal Citation | 144, pp. 665-676 |
Number of Pages | 12 |
Year | 2018 |
Place of Publication | United Kingdom |
ISSN | 0043-1354 |
1879-2448 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.watres.2018.07.040 |
Abstract | Concentrated wastewaters from agricultural industries represent a key opportunity for the upcycling of organics, nitrogen and phosphorus to higher value products such as microbial protein. Phototrophic or photosynthetic microbes very effectively capture input organics and nutrients as microbial protein. This study compares purple phototrophic bacteria (PPB) and microalgae (photosynthesis) for this purpose, treating real, high strength poultry processing wastewater in continuous photo bioreactors utilising infrared (IR) and white light (WL) respectively. Both reactors could effectively treat the wastewaters, and at similar loading rates (4 kgCOD m−3d−1). The infrared reactor (IRR) was irradiated at 18 W m−2 and the white light reactor (WLR) reactor at 1.5–2 times this. The IRR could remove up to 90% total chemical oxygen demand (TCOD), 90% total nitrogen (TN) and 45% total phosphorus (TP) at 1.0 d hydraulic retention time (HRT) and recover around 190 kg of crude protein per tonne of influent COD at 7.0 kWh per dry tonne−1 light input, with PPB dominating all samples. In comparison, the WLR removed up to 98% COD, 94% TN and 44% TP at 43–90% higher irradiance compared to the PPB reactor. Microalgae did not dominate the WLR and the community was instead a mix of microbes (algae, bacteria, zooplankton and detritus – ALBAZOD) with a production of approximately 140 kg crude protein per tonne influent COD. |
Keywords | agri-industrial; resource recover; wastewater; photobioreactor; PPB |
ANZSRC Field of Research 2020 | 401102. Environmentally sustainable engineering |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | University of Queensland |
Rey Juan Carlos University, Spain | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5178/white-and-infrared-light-continuous-photobioreactors-for-resource-recovery-from-poultry-processing-wastewater-a-comparison
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