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Leca MA, Michelena B, Castel L, Sánchez-Quintero Á, Sambusiti C, Monlau F, Le Guer Y, Beigbeder JB. Innovative and sustainable cultivation strategy for the production of Spirulina platensis using anaerobic digestates diluted with residual geothermal water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118349. [PMID: 37406495 DOI: 10.1016/j.jenvman.2023.118349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/26/2023] [Accepted: 06/06/2023] [Indexed: 07/07/2023]
Abstract
The following study investigates the possibility of growing the Spirulina platensis (S. platensis) cyanobacteria on two agro-industrial anaerobic digestion (AD) digestates diluted with geothermal water. The two digestates (FAWD: Food and Agricultural Wastes Digestate and CDD: Cheese Diary Digestate) were selected based on their different chemical characteristics, attributed to the type of feedstock and the operating conditions used during the AD process. In the first part of the study, a screening experiment was performed in 200 mL glass tubes to evaluate the appropriate dilution factor to generate the maximum S. platensis growth using both AD digestates individually and geothermal water as sustainable alternative dilution agent. Based on the different growth parameters measured, dilution rates of 5x and 40x were chosen for CDD and FAWD respectively, as a trade-off between growth performances and quantity of water to use. Volumetric productivities of 33 ± 1 mg/L/d and 56 ± 8 mg/L/d combined with maximal concentrations of 0.52 ± 0.02 g/L and 0.69 ± 0.02 g/L were achieved when cultivating S. platensis on CDD and FAWD, respectively. In the second part, the selected experimental results were scaled-up to 6 L flat panels bioreactors and S. platensis biomass productivities of 71 and 101 mg/L/d were obtained for CDD and FAWD, respectively using sodium bicarbonate as inorganic carbon source. When regulating the pH to 8.5 with carbon dioxide (CO2) injection, cultures were able to produce up to 1.13 g/L and 0.79 g/L of S. platensis corresponding to biomass productivities of 81 and 136 mg/L/d for CDD and FAWD, respectively. In addition, S. platensis properly assimilated the ammonium present in the digestate-based culture media, with removal efficiency up to 98% in the case of the CDD substrate. The characterization of the final S. platensis biomass revealed the presence of high concentration of carbohydrates (48.6-70.3 % of dry weight) in the culture supplemented with both AD digestates. The experimental findings show the potential of reusing liquid digestate, CO2 as well as geothermal water for the sustainable production of carbohydrate-rich S. platensis biomass.
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Affiliation(s)
- Marie-Ange Leca
- APESA, Pôle Valorisation, 3 Chemin de Sers, 64121, Montardon, France; SIAME, Université de Pau et Pays de l'Adour E2S UPPA - IPRA, 64000, Pau, France
| | | | - Lucie Castel
- APESA, Pôle Valorisation, 3 Chemin de Sers, 64121, Montardon, France
| | | | | | - Florian Monlau
- Total Energies, PERL - Pôle D' Etudes et de Recherche de Lacq, Pôle Economique 2, BP 47 - RD 817, 64170, Lacq, France
| | - Yves Le Guer
- SIAME, Université de Pau et Pays de l'Adour E2S UPPA - IPRA, 64000, Pau, France
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Quantification of extracellular and biomass carbohydrates by Arthrospira under nitrogen starvation at lab-scale. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Strategy Development for Microalgae Spirulina platensis Biomass Cultivation in a Bubble Photobioreactor to Promote High Carbohydrate Content. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8080374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
As a counter to climate change, energy crises, and global warming, microalgal biomass has gained a lot of interest as a sustainable and environmentally favorable biofuel feedstock. Microalgal carbohydrate is considered one of the promising feedstocks for biofuel produced via the bioconversion route under a biorefinery system. However, the present culture technique, which uses a commercial medium, has poor biomass and carbohydrate productivity, creating a bottleneck for long-term microalgal-carbohydrate-based biofuel generation. This current investigation aims toward the simultaneous increase in biomass and carbohydrate accumulation of Spirulina platensis by formulating an optimal growth condition under different concentrations of nitrogen and phosphorous in flasks and a bubble photobioreactor. For this purpose, the lack of nitrogen (NaNO3) and phosphorous (K2HPO4) in the culture medium resulted in an enhanced Spirulina platensis biomass and total carbohydrate 0.93 ± 0.00 g/L and 74.44% (w/w), respectively. This research is a significant step in defining culture conditions that might be used to tune the carbohydrate content of Spirulina.
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Thevarajah B, Nishshanka GKSH, Premaratne M, Nimarshana P, Nagarajan D, Chang JS, Ariyadasa TU. Large-scale production of Spirulina-based proteins and c-phycocyanin: A biorefinery approach. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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de Souza MP, Rizzetti TM, Hoeltz M, Dahmer M, Júnior JA, Alves G, Benitez LB, Schneider RCS. Bioproducts characterization of residual periphytic biomass produced in an algal turf scrubber (ATS) bioremediation system. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:1247-1259. [PMID: 33055414 DOI: 10.2166/wst.2020.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The transformation of residual biomass from bioremediation processes into new products is a worldwide trend driven by economic, environmental and social gain. The present study aimed to evaluate the potential for obtaining bioproducts of technological interest from the remaining periphytic biomass formed during a bioremediation process with an algal turf scrubber (ATS) system installed in a lake catchment. Different methodologies were used according to the target bioproduct. Analyses were performed by high performance liquid chromatography with diode array detector (HPLC/DAD), gas chromatography mass spectrometry (GC-MS), ultraviolet-visible spectroscopy (UV-VIS) and inductively coupled plasma optical emission spectrometry (ICP-OES). The results demonstrated that the periphytic biomass presented potential since protein (17.7%), carbohydrates (22.4%), total lipids (3.3%) with 3.6 mg mL-1 of fatty acids, antioxidants (144.5 μmol Trolox eq. g-1) and chlorophyll a, chlorophyll b and carotenoids (1,719.7 μg mL-1, 541.2 μg mL-1 and 317.7 μg mL-1, respectively) were obtained. Inorganic analysis presented a value of 42.3 ± 2.58% of total ash and metal presence was detected, indicating bioaccumulation. The properties found in periphyton strengthen the possibility of its application in different areas, ensuring bioremediation efficiency.
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Affiliation(s)
- Maiara P de Souza
- Environmental Technology Postgraduate Program and Center of Excellence in Oilchemistry and Biotechnology, University of Santa Cruz do Sul, Av. Independência 2293, Bloco 53, CEP 96815-900 Rio Grande do Sul, Brazil E-mail:
| | - Tiele M Rizzetti
- Environmental Technology Postgraduate Program and Center of Excellence in Oilchemistry and Biotechnology, University of Santa Cruz do Sul, Av. Independência 2293, Bloco 53, CEP 96815-900 Rio Grande do Sul, Brazil E-mail:
| | - Michele Hoeltz
- Environmental Technology Postgraduate Program and Center of Excellence in Oilchemistry and Biotechnology, University of Santa Cruz do Sul, Av. Independência 2293, Bloco 53, CEP 96815-900 Rio Grande do Sul, Brazil E-mail:
| | - Mainara Dahmer
- Center of Excellence in Oilchemistry and Biotechnology, University of Santa Cruz do Sul, Av. Independência 2293, Bloco 53, CEP 96815-900 Rio Grande do Sul, Brazil
| | - João A Júnior
- Center of Excellence in Oilchemistry and Biotechnology, University of Santa Cruz do Sul, Av. Independência 2293, Bloco 53, CEP 96815-900 Rio Grande do Sul, Brazil
| | - Gisele Alves
- Center of Excellence in Oilchemistry and Biotechnology, University of Santa Cruz do Sul, Av. Independência 2293, Bloco 53, CEP 96815-900 Rio Grande do Sul, Brazil
| | - Lisianne B Benitez
- Environmental Technology Postgraduate Program and Center of Excellence in Oilchemistry and Biotechnology, University of Santa Cruz do Sul, Av. Independência 2293, Bloco 53, CEP 96815-900 Rio Grande do Sul, Brazil E-mail:
| | - Rosana C S Schneider
- Environmental Technology Postgraduate Program and Center of Excellence in Oilchemistry and Biotechnology, University of Santa Cruz do Sul, Av. Independência 2293, Bloco 53, CEP 96815-900 Rio Grande do Sul, Brazil E-mail:
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