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고려대학교

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Bioresour. Technol., Available online 26 November 2024, 131892 | https://doi.org/10.1016/j.biortech.2024.1318 Economic and demonstrative pilot-scale harvesting of microalgae biomass via novel combined process of dissolved air flotation and screw-press filtration

Hyo Jik Yoon ^a, Jeong Seop Lee ^b, Ki Ha Min ^c, Dong Hyun Kim ^d, Sang Jun Sim ^b, Seung Pil Pack ^d

^aInstitute of Natural Science, Korea University, 2511, Sejong-ro, Sejong 30019, Republic of Korea
^bDepartment of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
^cInstitute of Industrial Technology, Korea University, 2511, Sejong-ro, Sejong 30019, Republic of Korea
^dDepartment of Biotechnology and Bioinformatics, Korea University, 2511, Sejong-ro, Sejong 30019, Republic of Korea

Corresponding author : Seung Pil Pack

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 m3/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 m3) 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/m3 of energy consumption. This innovative approach demonstrates the potential for large-scale microalgae biomass harvesting.

논문정보

형식Research article
게재일2024년 11월 (BRIC 등록일 2024-11-27)
연구진국내 연구진
분야 기타 > 기타

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