An efficient Photobioreactors/Raceway circulating system combined with alkaline-CO2 capturing medium for microalgal cultivation

Kuo, Chiu Mei; Jian, Jhong Fu; Sun, Yu; Lin, Tsung-Hsien; Yang, Yi; Zhang, Wenxing; Chang, Hui; Lai, Jinn Tsyy; Chang, Jo Shu; Lin, Chih Sheng

doi:10.1016/j.biortech.2018.06.090

Cited by 17 publications

(14 citation statements)

References 38 publications

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“…Similar to this research, the optimum culture pH was also 9.5 for both strains tested in this study, and the two strains achieved the highest CO 2 fixation rate at this pH ( Table 2). pH has an important impact on the distribution of DIC species in the culture medium, which strongly influences the growth of microalgae (Kuo et al, 2018).…”

Section: Process Optimization Of the Two Selected Strains Cultivated mentioning

confidence: 99%

“…The distribution of DIC species in the culture medium has influenced the growth of microalgae strongly (Kuo et al, 2018). Therefore, it is necessary to increase the availability of DIC in aqueous solution for enhancement of algal growth.…”

Section: Dic Optimizationmentioning

confidence: 99%

“…To mitigate CO 2 , it is very important to have excellent microalgal strains. For example, it is a requirement to select alkali-tolerant microalgae to enhance algal growth by increasing the content of dissolved inorganic carbon (DIC) in the alkaline medium (Kuo et al, 2018). An efficient way to screen excellent algal strains was reported by Cheng et al (2013), who showed that nuclear irradiation combined with CO 2 domestication could improve biomass productivity and CO 2 fixation of Chlorella species.…”

Section: Introductionmentioning

confidence: 99%

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Large-Scale Cultivation of Spirulina for Biological CO2 Mitigation in Open Raceway Ponds Using Purified CO2 From a Coal Chemical Flue Gas

Zhu

Shên

et al. 2020

Front. Bioeng. Biotechnol.

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In order to select excellent strains with high CO 2 fixation capability on a large scale, nine Spirulina species were cultivated in columnar photobioreactors with the addition of 10% CO 2. The two species selected (208 and 220) were optimized for pH value, total dissolved inorganic carbon (DIC), and phosphorus content with intermittent CO 2 addition in 4 m 2 indoor raceway ponds. On the basis of biomass accumulation and CO 2 fixation rate in the present study, the optimum pH, DIC, and phosphate concentration were 9.5, 0.1 mol L −1 , and 200 mg L −1 for both strains, respectively. Lastly, the two strains selected were semi-continuously cultivated successfully for CO 2 mitigation in 605 m 2 raceway ponds aerated with food-grade CO 2 purified from a coal chemical flue gas on a large scale. The daily average biomass dry weight of the two stains reached up to 18.7 and 13.2 g m −2 d −1 , respectively, suggesting the two Spirulina strains can be utilized for mass production.

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Section: Process Optimization Of the Two Selected Strains Cultivated mentioning

confidence: 99%

Section: Dic Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Large-Scale Cultivation of Spirulina for Biological CO2 Mitigation in Open Raceway Ponds Using Purified CO2 From a Coal Chemical Flue Gas

Zhu

Shên

et al. 2020

Front. Bioeng. Biotechnol.

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“…Mixed systems (open and closed) tend to increase the efficiency of microalgae cultivation by adding the advantages of the two systems and minimizing their disadvantages as well as others integrated systems with microalgae cultivation . The study of these systems can lead to relevant results for nutrient removal and economic exploitation of biomass, especially if the system is developed with indigenous species.…”

Section: Introductionmentioning

confidence: 99%

“…34 Mixed systems (open and closed) tend to increase the efficiency of microalgae cultivation by adding the advantages of the two systems and minimizing their disadvantages as well as others integrated systems with microalgae cultivation. [35][36][37] The study of these systems can lead to relevant results for nutrient removal and economic exploitation of biomass, especially if the system is developed with indigenous species. Therefore, the economic impact that microalgae can achieve in the bioremediation-associated biofuels sector is still an important issue that needs to be investigated as well as the lack of technological processes.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of microalgae growth in a mixed‐type photobioreactor system for the phycoremediation of wastewater

Pacheco

Hoeltz

Bjerk

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Remediation of wastewater using microalgae is an alternative way of reducing environmental impacts associated with wastewater treatment while simultaneously generating biomass that can be converted into biofuels. In this study, the phycoremediation of a secondary urban effluent by native microalgae was investigated using a photobioreactor designed to receive carbon dioxide (CO2). The experiments were carried out with and without CO2 addition, and the physicochemical parameters of the effluent were monitored. The biomass yield was determined as the dry weight, and both the lipid and fatty acid profiles were obtained by gas chromatography with mass spectrometry detection. RESULTS With respect to biomass production, lipid content and phycoremediation of the secondary urban effluent, the best results were observed in the experiments using CO2. In these experiments, reductions of biological oxygen demand (54.34%), total phosphorus (92.4%), ammoniacal nitrogen (97.1%) and total Kjeldahl nitrogen (92.8%) were observed. The CO2 addition also enhanced microalgae growth, as the maximum cell density (MCD) was 54.26% higher after a shorter period of time compared to the MCD obtained without CO2 addition. The biomass yields were 0.5324 ± 0.007 g L−1 and 0.821 ± 0.014 g L−1 without and with CO2 addition, respectively. The lipid yields per unit of biomass for the CO2 supplemented cultures were not statistically different from cultures that were not supplemented with CO2, and the same was observed for fatty acid composition. CONCLUSION The use of the mixed‐type photobioreactor has been shown to be a potential alternative method for biomass production and wastewater phycoremediation. © 2019 Society of Chemical Industry

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Growth and Metabolite Production in Chlorella sp.: Analysis of Cultivation System and Nutrient Reduction

Estevam

Pinto²,

Filho³

et al. 2022

Bioenerg. Res.

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An efficient Photobioreactors/Raceway circulating system combined with alkaline-CO2 capturing medium for microalgal cultivation

Cited by 17 publications

References 38 publications

Large-Scale Cultivation of Spirulina for Biological CO2 Mitigation in Open Raceway Ponds Using Purified CO2 From a Coal Chemical Flue Gas

Large-Scale Cultivation of Spirulina for Biological CO2 Mitigation in Open Raceway Ponds Using Purified CO2 From a Coal Chemical Flue Gas

Evaluation of microalgae growth in a mixed‐type photobioreactor system for the phycoremediation of wastewater

Growth and Metabolite Production in Chlorella sp.: Analysis of Cultivation System and Nutrient Reduction

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