CO2 bio-fixation and biofuel production in an airlift photobioreactor by an isolated strain of microalgae Coelastrum sp. SM under high CO2 concentrations

Mousavi, Shokouh; Najafpour, Ghasem; Mohammadi, Maedeh

doi:10.1007/s11356-018-3037-4

Cited by 34 publications

(7 citation statements)

References 45 publications

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“…Few studies have been conducted related to the interaction of pH and CO 2 with microalgalcarbohydrate. Previous study carried out by Mousavi et al (2018) found that the increasing accumulation of carbohydrates of Coelastrum sp. SM up to 17% is replaced by a concentration of 6% of the CO 2 with a 12% (v/v) of CO 2 .…”

Section: Introductionmentioning

confidence: 88%

GROWTH, CARBOHYDRATE PRODUCTIVITY AND GROWTH KINETIC STUDY OF Halochlorella rubescens CULTIVATED UNDER CO2-RICH CONDITIONS

Tan

Kassim

2020

MABJ

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This study was parametrically established to investigate the effect of different initial pH cultivation medium from pH 4.00 to pH 10.00 and CO2 concentration from 0.04% to 25% (v/v) on the growth and carbohydrate content of Halochlorella rubescens. Changes in biochemical compositions were also analysed using Fourier-transform infrared spectroscopy (FTIR). The maximum concentration of biomass and the productivity carbohydrate were 0.49 ± 0.01 g/L and 22.42 ± 0.03 mg/L.d respectively, when pH 10.00 and 5% (v/v) CO2 concentration were used for cultivation. The FTIR analysis revealed obvious changes in the chemical functional groups for the1200-900 cm-1, 1655 cm-1 and 2850 cm-1 bands, which represent carbohydrate, protein and lipid in microalgal biomass under different cultivation conditions. At the completion of this study, two kinetic growth models, Logistic and Gompertz were evaluated for microalgae growth at elevated condition. The kinetic model analysis for Halochlorella rubescens growth at high CO2 condition fit well with the Gompertz equation with R2 value of 0.9977. The data acquired from this research was helpful for predicting the growth characteristics of microalgae in a CO2-rich medium and could act as an essential platform for the production of chemicals and biofuels

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Section: Introductionmentioning

confidence: 88%

GROWTH, CARBOHYDRATE PRODUCTIVITY AND GROWTH KINETIC STUDY OF Halochlorella rubescens CULTIVATED UNDER CO2-RICH CONDITIONS

Tan

Kassim

2020

MABJ

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“…In the third stage, carbon dioxide uptake and Spirulina sp. microalgae growth were studied by inputting the solution of culture medium and microalgae into the device, and entering the mixture of air and carbon dioxide with 5% (v/v), at two superficial gas velocities (0.185 and 0.524 cm/s), and atmospheric pressure under the following conditions: with 12:12 light-dark (LD) cycle, temperature (30 ± 2 °C) (Mousavi et al 2018), light intensity 2600 lux/m 2 and 7-day experimental period.…”

Section: Methodsmentioning

confidence: 99%

Effect of Gas Holdup on CO2 Biofixation by Spirulina sp. in the 20-liter Airlift Bioreactor

Malekshahi

Morowvat

et al. 2021

Preprint

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The rise of CO2 concentration in the Earth is a major environmental problem, which cause global warming. To solve this issue, several methods have been applied, but among these solutions using microalgae is an eco-friendly and cost-effective way of reducing carbon dioxide, as they can efficiently sequestrate CO2 and produce biomass as valuable products. In this study, hydrodynamic parameters, bubble sizes and carbon dioxide uptake were investigated in an airlift bioreactor. Experiments were studied at two different superficial gas velocities (0.185 and 0.524 cm/s) for Spirulina sp. microalgae into a 20-liter airlift bioreactor to find out the amount of carbon dioxide sequestration and cyanobacterial biomass. The highest efficiency of carbon dioxide removal and maximum dry weight of Spirulina sp. were achieved 55.48% and 0.86 g/L respectively at 5% CO2 (v/v) and superficial velocity of 0.185 cm/s. This experiment was conducted in 7 days, light intensity (2600 lux/m2), temperature (30\(\pm\)2 °C) and a light-dark cycle (12–12), which all were constant. The hydrodynamic parameters studied by Spirulina sp. demonstrated a capability of CO2 sequestration in this airlift photobioreactor.

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“…They also observed a further improvement in carbohydrate content up to 54.03% under nitrogen starvation coupled with bicarbonate supplementation conditions [ 159 ]. The effectiveness of directly using CO 2 and other carbon sources such as pentose to improve the carbohydrate content can be found in several other published works [ 160 , 161 , 162 ]. Literature reports that both the source and concentration of CO 2 are important.…”

Section: Microalgal Starchmentioning

confidence: 99%

“…Their results showed that the production of carbohydrates and lipids was increased by the addition of 10% ( v / v ) of pure CO 2 at a flow rate of 5 L·min −1 into the photobioreactor. Other studies reported the effect of CO 2 concentration, namely [ 160 ], which indicated carbohydrate content of 58.45% in Coelastrum sp. SM cultivated in dairy wastewater supplemented with 12% CO 2 , and the study of de Freitas et al [ 162 ], which reported an increase in carbohydrate content of Chlorella minutissima pentoses from 32.5 to 56.8% with 5% pentose supplementation conditions.…”

Section: Microalgal Starchmentioning

confidence: 99%

Microalgae as Contributors to Produce Biopolymers

et al. 2021

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Biopolymers are very favorable materials produced by living organisms, with interesting properties such as biodegradability, renewability, and biocompatibility. Biopolymers have been recently considered to compete with fossil-based polymeric materials, which rase several environmental concerns. Biobased plastics are receiving growing interest for many applications including electronics, medical devices, food packaging, and energy. Biopolymers can be produced from biological sources such as plants, animals, agricultural wastes, and microbes. Studies suggest that microalgae and cyanobacteria are two of the promising sources of polyhydroxyalkanoates (PHAs), cellulose, carbohydrates (particularly starch), and proteins, as the major components of microalgae (and of certain cyanobacteria) for producing bioplastics. This review aims to summarize the potential of microalgal PHAs, polysaccharides, and proteins for bioplastic production. The findings of this review give insight into current knowledge and future direction in microalgal-based bioplastic production considering a circular economy approach. The current review is divided into three main topics, namely (i) the analysis of the main types and properties of bioplastic monomers, blends, and composites; (ii) the cultivation process to optimize the microalgae growth and accumulation of important biobased compounds to produce bioplastics; and (iii) a critical analysis of the future perspectives on the field.

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CO2 bio-fixation and biofuel production in an airlift photobioreactor by an isolated strain of microalgae Coelastrum sp. SM under high CO2 concentrations

Cited by 34 publications

References 45 publications

GROWTH, CARBOHYDRATE PRODUCTIVITY AND GROWTH KINETIC STUDY OF Halochlorella rubescens CULTIVATED UNDER CO2-RICH CONDITIONS

GROWTH, CARBOHYDRATE PRODUCTIVITY AND GROWTH KINETIC STUDY OF Halochlorella rubescens CULTIVATED UNDER CO2-RICH CONDITIONS

Effect of Gas Holdup on CO2 Biofixation by Spirulina sp. in the 20-liter Airlift Bioreactor

Microalgae as Contributors to Produce Biopolymers

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