CO2 Biomitigation and Biofuel Production Using Microalgae: Photobioreactors Developments and Future Directions

Znad, Hussein; Naderi, Gita; Ang, Ming; Tadé, Moses

doi:10.5772/32568

Cited by 10 publications

(9 citation statements)

References 39 publications

(22 reference statements)

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“…While exposing cells for longer duration to high light intensity causes photoinhibition. Znad et al (2012) reported good microalgal growth rates under a light intensity of 4000 lmol m -2 s -1 . Periods of low light intensity significantly increases growth, CO 2 assimilation and lipid productivity in microalgae.…”

Section: Lightmentioning

confidence: 99%

“…Maintaining the appropriate supply of CO 2 is a very critical factor in open ponds systems and it is maintained by pH-stat, which warrants both provisions for CO 2 and optimum pH of the culture simultaneously. Closed systems (Znad et al 2012). Closed systems have less chances of contamination and are easy to monitor as they require less space but they are not cost effective (Campo et al 2007).…”

Section: Microalgal Cultivationmentioning

confidence: 99%

“…The metabolic rates of microalgae are generally accelerated by higher temperatures, whereas inhibition of microalgal growth is caused by lower temperatures (Kumar et al 2011). The optimal temperature for growth varies among microalgal species ranging from 15 to 26°C (Znad et al 2012) If the microalgae culture is fed with flue gas, then thermophilic organisms are required for CO 2 bio-sequestration. Since, Flue gas temperature can be as high as 120°C.…”

Section: Temperaturementioning

confidence: 99%

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Production of biodiesel from microalgae through biological carbon capture: a review

et al. 2017

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Gradual increase in concentration of carbon dioxide (CO 2 ) in the atmosphere due to the various anthropogenic interventions leading to significant alteration in the global carbon cycle has been a subject of worldwide attention and matter of potential research over the last few decades. In these alarming scenario microalgae seems to be an attractive medium for capturing the excess CO 2 present in the atmosphere generated from different sources such as power plants, automobiles, volcanic eruption, decomposition of organic matters and forest fires. This captured CO 2 through microalgae could be used as potential carbon source to produce lipids for the generation of biofuel for replacing petroleum-derived transport fuel without affecting the supply of food and crops. This comprehensive review strives to provide a systematic account of recent developments in the field of biological carbon capture through microalgae for its utilization towards the generation of biodiesel highlighting the significance of certain key parameters such as selection of efficient strain, microalgal metabolism, cultivation systems (open and closed) and biomass production along with the national and international biodiesel specifications and properties. The potential use of photobioreactors for biodiesel production under the influence of various factors viz., light intensity, pH, time, temperature, CO 2 concentration and flow rate has been discussed. The review also provides an economic overview and future outlook on biodiesel production from microalgae.

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Section: Lightmentioning

confidence: 99%

Section: Microalgal Cultivationmentioning

confidence: 99%

Section: Temperaturementioning

confidence: 99%

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Production of biodiesel from microalgae through biological carbon capture: a review

et al. 2017

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“…Over this value, the photosystem II reactor centres of the microalgae can be damaged, which implies a reduction of the carbon needed to carry out the photosynthesis process, causing photoinhibition [15]. On the other hand, if the supplied light intensity is low, the availability of light is restricted to the surface area of the photobioreactor [16], therefore photolimitation occurs.…”

Section: Introductionmentioning

confidence: 99%

Wastewater nutrient removal in a mixed microalgae–bacteria culture: effect of light and temperature on the microalgae–bacteria competition

González-Camejo

Barat

Pachés

et al. 2017

Environmental Technology

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The aim of this study was to evaluate the effect of light intensity and temperature on nutrient removal and biomass productivity in a microalgae-bacteria culture and their effects on the microalgae-bacteria competition. Three experiments were carried out at constant temperature and various light intensities: 40, 85 and 125 µE m s. Other two experiments were carried out at variable temperatures: 23 ± 2°C and 28 ± 2°C at light intensity of 85 and 125 µE m s, respectively. The photobioreactor was fed by the effluent from an anaerobic membrane bioreactor. High nitrogen and phosphorus removal efficiencies (about 99%) were achieved under the following operating conditions: 85-125 µE m s and 22 ± 1°C. In the microalgae-bacteria culture studied, increasing light intensity favoured microalgae growth and limited the nitrification process. However, a non-graduated temperature increase (up to 32°C) under the light intensities studied caused the proliferation of nitrifying bacteria and the nitrite and nitrate accumulation. Hence, light intensity and temperature are key parameters in the control of the microalgae-bacteria competition. Biomass productivity significantly increased with light intensity, reaching 50.5 ± 9.6, 80.3 ± 6.5 and 94.3 ± 7.9 mgVSS L d for a light intensity of 40, 85 and 125 µE m s, respectively.

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“…Alternative CCS technology utilized alkaline solutions (e.g. NaOH) and microalgae in photobioreactor [5][6].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Ankistrodesmus falcatus for Bicarbonate-Based Integrated Carbon Capture System (BICCAPS)

Beltran

Gravador

et al. 2018

MATEC Web Conf.

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Abstract. This study evaluates the performance of alkaliphilic microalgae Ankistrodesmus falcatus in the Bicarbonate-based Integrated Carbon Capture and Algae Production System (BICCAPS). The system utilized bicarbonate as carbon source for microalgae production. BICCAPS parameters such as pH, algal biomass productivity and CO2 utilization (inorganic carbon conversion, Ci) were observed at different sodium bicarbonate (NaHCO3) loading concentration and type of culture media. The highest productivity was observed at 10 g/L of NaHCO3 loading in BRSP medium at 3.5539 mg/L/day. This value is 30% lower compared to the control experiment (continuously aerated bioreactor). The Ci values of the different system ranges from 1.17 x 10 -4 to 1.51 x 10 -4 moles/L/day. Both the pH of the BRSP and NPK media at 10 g/L and 30g/L loading of NaHCO3 increased through time. The result shows that A. falcatus has a potential in BICCAPS utilization.

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CO2 Biomitigation and Biofuel Production Using Microalgae: Photobioreactors Developments and Future Directions

Cited by 10 publications

References 39 publications

Production of biodiesel from microalgae through biological carbon capture: a review

Production of biodiesel from microalgae through biological carbon capture: a review

Wastewater nutrient removal in a mixed microalgae–bacteria culture: effect of light and temperature on the microalgae–bacteria competition

Evaluation of Ankistrodesmus falcatus for Bicarbonate-Based Integrated Carbon Capture System (BICCAPS)

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