AI Article Synopsis
- Microalgae are a promising and sustainable biomass resource, but research on large-scale harvesting processes is limited despite available technologies.
- A new harvesting system has been developed that combines dissolved air flotation and screw-press filtration, resulting in lower energy consumption and high biomass harvest efficiency (93%) for chlorella sp.
- This system is more energy-efficient than traditional centrifugation methods, using 60.5% less energy, and demonstrates strong potential for scaling up microalgae biomass harvesting for industrial use.
Article Abstract
Microalgae, a promising sustainable biomass resource, lacks sufficient research for pilot-scale processes despite available technologies. Harvesting methods also pose challenges for large-scale applications. To address this, the economically viable large-scale microalgae harvesting system is here presented. The design integrates dissolved air flotation (5 m/h) and screw-press filtration (10 kg/h), minimizing energy consumption suitable for industrial processes. This system efficiently harvests chlorella sp. (up to 4.1 m) with a biomass harvest efficiency of 93 % and a dewatering rate of 11.9 %. Compared to centrifugation, the multi-stage system improves energy efficiency by 60.5 % with 1.7 kWh/m of energy consumption. This innovative approach demonstrates the potential for large-scale microalgae biomass harvesting.
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| http://dx.doi.org/10.1016/j.biortech.2024.131892 | DOI Listing |
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