Mass transfer and flow characterization of novel algae-based nutrient removal system
نویسندگان
چکیده
Abstract Background Recirculating aquaculture systems (RAS) are an essential component of sustainable inland seafood production. Still, nutrient removal from these can result in substantial environmental problems, or present a major cost factor with few added value options. In this study, innovative and energy-efficient algae based system (NRS) was developed that has the potential to generate revenue through algal commercialization. We optimized mass transfer our NRS design using novel aeration mixing technology, air lift pumps original membrane cartridge for continuous operation Specifically, we designed, manufactured tested 60-L prototype. Based on specific airlift conditions as well concentration gradients, assessed capacity. then examined effects different internal bioreactor geometries radial orientations efficiency. Results Using start-up dynamic method, overall coefficient found be range 0.00164–0.0074 $${\mathrm{s}}^{-1}$$ s - 1 , depending flow parameters confirmed scaling relationship across gradients. optimal Reynolds number 500 transfer, higher numbers resulted relatively reduced increase transfer. This between is critical assess scalability system. Our results demonstrate even distribution dissolved oxygen levels reactor core, demonstrating adequate by pump, consideration growth. Distribution gases further visualization order relate bubble capabilities reactor. run successful proof principle trial green alga Dunaliella tertiolecta nutrients biomass Conclusions Manipulation gradient demonstrates more prominent role at rate increased threefold when 2.5-fold. grow chamber rates comparable those other production scaffolds effectively remove form wastewater. findings provide support use potentially applications.
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ژورنال
عنوان ژورنال: Biotechnology for Biofuels
سال: 2021
ISSN: ['1754-6834']
DOI: https://doi.org/10.1186/s13068-021-01951-9