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Hirayama A, Sueyoshi MN, Nakano T, Ota Y, Kurita H, Tasaki M, Kuroiwa Y, Kato T, Serizawa S, Kojima K, Al-Maamari RS, Hasegawa T, Thomas-Hall SR, Schenk PM. Development of large-scale microalgae production in the Middle East. Bioresour Technol 2022; 343:126036. [PMID: 34626761 DOI: 10.1016/j.biortech.2021.126036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
Microalgae in the Middle East can theoretically address food security without competing for arable land, but concerns exist around scalability and durability of production systems under the extreme heat. Large-scale Chlorella sorokiniana production was developed in outdoor raceway ponds in Oman and monitored for 2 years to gather data for commercial production. Biological and technical challenges included construction, indoor/outdoor preculturing, upscaling, relating productivity to water temperature and meteorological conditions, harvesting, drying, and quality control. Small cultivation systems required cooling for initial scale-up, but, despite maximum temperatures of 49.7 °C, water temperatures were at acceptable levels by evaporative cooling in larger raceway ponds. Contamination with Vampirovibrio chlorellavorus was identified by 16S rDNA amplicon sequencing and addressed by culture replacement. Productivities ranged from 8 to 30 g-dry weight m-2d-1, with estimated annual productivity of 16 g-dry weight m-2d-1 as functions of solar intensity and water temperature, confirming that the region is suitable for commercial microalgae production.
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Affiliation(s)
| | | | | | - Yuki Ota
- Shimizu Corporation, Tokyo 104-8370, Japan
| | | | | | | | | | | | | | - Rashid S Al-Maamari
- Petroleum & Chemical Engineering Dept., College of Engineering, Sultan Qaboos University, Al-Khoudh PC 123, Oman
| | - Takeshi Hasegawa
- Ecorenaissance-Entech Co., Ltd., 4-7-18, Kashiwa, Chiba 2770841, Japan
| | - Skye R Thomas-Hall
- Algae Biotechnology Laboratory, School of Agriculture and Food Sciences, University of Queensland, Brisbane, QLD 4072, Australia
| | - Peer M Schenk
- Algae Biotechnology Laboratory, School of Agriculture and Food Sciences, University of Queensland, Brisbane, QLD 4072, Australia
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He Y, Ma M, Hu Q, Gong Y. Assessment of NH4HCO3 for the control of the predator flagellate Poterioochromonas malhamensis in pilot-scale culture of Chlorella sorokiniana. ALGAL RES 2021; 60:102481. [DOI: 10.1016/j.algal.2021.102481] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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