Control of CO2 input conditions during outdoor culture of Chlorella vulgaris in bubble column photobioreactors

Guo, Zhi; Phooi, Wei Boon Alfred; Lim, Zi Jian; Tong, Yen Wah

doi:10.1016/j.biortech.2015.03.065

Cited by 29 publications

(8 citation statements)

References 32 publications

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“…whereas the chlorella cultures aerated with 10% CO2 gas and sterile air have 0.85 and 0.75 g/L biomass concentration, respectively. The biomass concentration obtained from this experiments was similar to those records conducted by Guo et al [27]. Observations indicated that, higher CO2 concentration can improve C. vulgaris photosynthetic activity and promote them to shorten their cultivation time.…”

Section: Effect Of Co2 Concentration On C Vulgaris Biomass Producsupporting

confidence: 87%

Enhanced Vitamin B12 Production using Chlorella vulgaris

Jalilian

Najafpour

Khajouei

2019

IJE

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Microalgae Chlorella Vulgaris is enriched in vitamin B12 and cobalt ion which is positioned in the center of the vitamin molecule. This study aimed to investigate how different concentrations of cobalt chloride salt affected the vitamin B12 production by utilizing CO2 gas, to assess C. vulgaris biomass. Therefore, Bold's basal medium used as the medium and 0.5, 1.5, 2 and 2.5 μM cobalt chloride salt was added to C. vulgaris culture. Under four cobalt chloride salt treatments, the best growth rate was obtained at the 2 μM of cobalt chloride salt (0.186 + 0.07 g /L.d). CO2 gas was supplied by 5% CO2 gas cylinder and fermented milk as a novel biological CO2 gas generator (CO2,10%). Use of fermented milk is a practical approach for elimination of waste gas emission and converting CO2 into biomass. The results revealed that, in the presence of 5% CO2 gas, C. vulgaris vitamin B12 content at 2 and 2.5 μM cobalt chloride, were 166.23 ± 1.78 and 173.32 ± 4.23 μg /100 g of dry biomass (7 and 12% higher than control), respectively. However, under controlled condition (ambient air and 2 μM cobalt chloride) vitamin B12 content was 154.9 ± 1.14 μg / 100 g of dry biomass.

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Section: Effect Of Co2 Concentration On C Vulgaris Biomass Producsupporting

confidence: 87%

Enhanced Vitamin B12 Production using Chlorella vulgaris

Jalilian

Najafpour

Khajouei

2019

IJE

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“…Chlorella sp., well described in the scientific literature, is the favored algae species for a space mission. This microalgae, as well as other families of marine and freshwater microalgae, are aquaculture study subjects, in particular for water purification by eliminating dissolved and suspended matter in water (Yang et al, 2019), the fixation and sequestration of carbon dioxide (Guo et al, 2015;Gales et al, 2020), as feed for aquatic invertebrates such as copepods, and also as a food supplement for humans (Hader et al, 2006;Niederwieser et al, 2018;Yang et al, 2019).…”

Section: Photosynthetic Organisms As Food Sources In a Bioregenerative Life Support Systemmentioning

confidence: 99%

Space Aquaculture: Prospects for Raising Aquatic Vertebrates in a Bioregenerative Life-Support System on a Lunar Base

Przybyla

2021

Front. Astron. Space Sci.

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The presence of a human community on the Moon or on Mars for long-term residence would require setting up a production unit allowing partial or total food autonomy. One of the major objectives of a bioregenerative life-support system is to provide food sources for crewed missions using in situ resources and converting these into the food necessary to sustain life in space. The nutritive quality of aquatic organisms makes them prospective candidates to supplement the nutrients supplied by photosynthetic organisms already studied in the context of space missions. To this end, it is relevant to study the potential of fish to be the first vertebrate reared in the framework of space agriculture. This article investigates the prospects of space aquaculture through an overview of the principal space missions involving fish in low orbit and a detailed presentation of the results to date of the Lunar Hatch program, which is studying the possibility of space aquaculture. A promising avenue is recirculating aquaculture systems and integrated multi-trophic aquaculture, which recycles fish waste to convert it into food. In this sense, the development and application of space aquaculture shares the same objectives with sustainable aquaculture on Earth, and thus could indirectly participate in the preservation of our planet.

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“…The specific growth rates obtained in the present study were higher than those recorded by the aforementioned study. Guo et al [19] optimised the CO2 supply (CO2 enriched gaseous streams with 2, 4 and 8%) in 80 L (8 L × 10 sets) bubble columns for outdoor cultivation of C. vulgaris. For 2% CO2 enriched air, the biomass concentration on day 7 was 1.5 g•L −1 with biomass productivity of 0.18 g•L −1 •d −1 (7.5 × 10 −3 g•L −1 •h −1 ).…”

Section: Biomass Productionmentioning

confidence: 99%

“…Therefore, they can be applied to the culture in continuous mode for controlling the CO 2 feed, aiming the optimization of their consumption with this biological system. Guo et al [19] tested C. vulgaris cultivation at outdoor conditions with pilot-scale bubble column PBR of 80 L without temperature and pH control. Different CO 2 input conditions (concentration, feed period and frequency) were provided, with aiming at optimizing CO 2 capture and biomass conversion efficiencies.…”

Section: Introductionmentioning

confidence: 99%

Outdoor Cultivation of the Microalga Chlorella vulgaris in a New Photobioreactor Configuration: The Effect of Ultraviolet and Visible Radiation

et al. 2020

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Microalgae can be a future source of biomass with a wide range of applications, including its use to solve current environmental issues. One of the main variables for microalgal cultivation is the light supply: (i) its intensity that often does not present a uniform spatial distribution inside the culture; (ii) photoperiod; and (iii) spectrum. Therefore, this study aims to evaluate the growth of the microalgae Chlorella vulgaris in a tubular photobioreactor with compound parabolic collectors (CPCs) under outdoor conditions. The effect of ultraviolet and visible radiation on biomass productivity and nutrients (nitrogen and phosphorus) uptake was assessed. The maximum biomass productivity was (5 ± 1) × 10−3 g·L−1·h−1, and the specific growth rates ranged from (1.1 ± 0.3) × 10−2 to (2.0 ± 0.6) × 10−2 h−1. Regarding nutrient uptake, initial removal rates of (0.9 ± 0.4) mg N·L−1·h−1 for nitrogen and (0.17 ± 0.04) mg P·L−1·h−1 for phosphorus were reached. These values increased with visible and ultraviolet irradiance until certain values (143 WVIS·m−2 and 9 WUV·m−2 for biomass productivity; 101 WVIS·m−2 and 6 WUV·m−2 for nutrient removal) and then decreased for higher ones due to the photoinhibition phenomenon. Therefore, the application of CPCs to photobioreactors (PBRs) may be beneficial for microalgal culture in countries with higher latitude (with lower solar irradiance levels).

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Control of CO2 input conditions during outdoor culture of Chlorella vulgaris in bubble column photobioreactors

Cited by 29 publications

References 32 publications

Enhanced Vitamin B12 Production using Chlorella vulgaris

Enhanced Vitamin B12 Production using Chlorella vulgaris

Space Aquaculture: Prospects for Raising Aquatic Vertebrates in a Bioregenerative Life-Support System on a Lunar Base

Outdoor Cultivation of the Microalga Chlorella vulgaris in a New Photobioreactor Configuration: The Effect of Ultraviolet and Visible Radiation

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