Characterization of Arthrospira Sp (Spirulina) Biomass Grown in Hydroponic Waste Solution: A Review

Rodrigues, Yan Valdez Santos; Almeida, Edna dos Santos

doi:10.5151/siintec2020-characterizationofarthrospira

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…When considering large-scale production for industrial purposes, it is important to grow Spirulina at a lower cost. After the labor costs, the cost of nutrients is the second most significant factor affecting the cost of Spirulina biomass production (Rodrigues et al, 2020). The major objective of this research is to identify a possible low-cost alternative source of carbon that could substitute NaHCO 3 in Zarrouk's medium.…”

Section: Althoughmentioning

confidence: 99%

Development of Low-Cost Growing Media with Mungbean as A Source of Carbon for Spirulina

Thathsatani,

Arunakumara,

Marikar

2023

PJA

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Spirulina is a multicellular, photosynthesis, filamentous blue-green algae which is found naturally in a wide range of fresh, marine, and brackish waters. It is an excellent source of protein, vitamins, minerals, lipids, carbohydrates, and pigments thus considered as the “superfood” of the century. The commercial production of Spirulina depends on many factors such as nutrient availability, temperature, and light. Zarrouk’s medium is known to be the standard media (SM) which contains all the macro and micro-nutrients required for the growth of Spirulina. The cost of nutrients is however found to be the second limiting factor next to labor cost affecting the commercial-scale production of Spirulina. The cost of carbon source is higher than that of N and P sources. Therefore, this study aimed at developing a low-cost medium for large-scale production of Spirulina. This intention was implemented by substituting carbon sources present in SM with cheaper and locally available carbon sources. Two separate experiments were conducted using a complete randomized design (CRD) with 3 replicates. The conventional carbon source in Zarrouk’s medium (NaHCO3) was substituted with low-cost carbon sources i.e., Mungbean flour (before and after germination separately). The carbon content in SM was replaced by 100 %, 75 %, 50 % and 25 % of Mungbean flour. Zarrouk’s medium was used as the control. The culture was maintained at 30 0C ± 2 0C under 4000 Lux, continuous illumination using a white, fluorescent tube for 16 days. Growth was measured using a spectrometer and optical density (OD) values were recorded at 560 nm with two days interval. Data were analyzed using SAS version 9.4. The best growth of Spirulina was recorded at the 50 % replacement of carbon in SM by Mungbean flour (before germination). Mungbean flour (after germination) could also replace 25 % of carbon in Zarrouk’s media. Taking the cost factor into consideration, 50 % replacement of carbon in Zarrouk’s medium by Mungbean flour (before germination) can be recommended for commercial scale cultivation. The comparative cost reduction of this replacement is estimated to be 50 %.

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Section: Althoughmentioning

confidence: 99%

Development of Low-Cost Growing Media with Mungbean as A Source of Carbon for Spirulina

Thathsatani,

Arunakumara,

Marikar

2023

PJA

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“…A systematic review of the cultivation of Arthrospira sp. in alternative culture media based on wastewater effluent was carried out, and demonstrated a supplement with a synthetic medium for the use of obtained biomass for commercial purposes [24].…”

Section: Introductionmentioning

confidence: 99%

Revolutionizing Agriculture: Leveraging Hydroponic Greenhouse Wastewater for Sustainable Microalgae-Based Biostimulant Production

Álvarez-Gil,

Blanco-Vieites,

Suárez-Montes

et al. 2023

Sustainability

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The current intensification in agricultural pressure has resulted in the addition of excessive amounts of nutrients. While hydroponic systems have become an agricultural tool to reduce this nutrient addition, the produced nutrient-rich drainage solution, which has a negative effect in water bodies, is still a barrier that needs to be overcome. A promising alternative for nutrient recovery is the cultivation of microalgae, which require a significant quantity of nutrients for their growth. Furthermore, their biostimulant properties enhance the circularity and sustainability approach. This study evaluates microalgae growth with a hydroponic drainage solution and the use of the resulting biomass as a source for biostimulant. Three microalgae strains were tested (Desmodesmus sp., Chlorella vulgaris, and Scenedesmus obliquus) and grown at laboratory scale (0.5 and 2 L) with drainage wastewater taken from hydroponic tomato crops. Measures of OD750 and OD680 revealed Desmodesmus sp. as the strain with the best performance, achieving 1.4 and 1.8, respectively, in the 0.5 L assay and 1.08 and 1.3 in the 2 L assay. These results were confirmed in another assay that compared Desmodesmus sp. growth in drainage wastewater and in control media. Then, Desmodesmus sp. was tested at industrial scale. Results show the columnar PBR reached 1.8 g·L−1 compared to 1.1 g·L−1 achieved with raceways. Finally, the resulting biomass was tested in a biocatalysis process for biostimulant production, suggesting an innovative system to use microalgae biomass cultured in wastewater as a valuable product such as biostimulant.

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Characterization of Arthrospira Sp (Spirulina) Biomass Grown in Hydroponic Waste Solution: A Review

Cited by 2 publications

References 16 publications

Development of Low-Cost Growing Media with Mungbean as A Source of Carbon for Spirulina

Development of Low-Cost Growing Media with Mungbean as A Source of Carbon for Spirulina

Revolutionizing Agriculture: Leveraging Hydroponic Greenhouse Wastewater for Sustainable Microalgae-Based Biostimulant Production

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