Microalgae Tolerance to High Concentrations of Carbon Dioxide: A Review

Abstract

The increasing concentration of carbon dioxide (CO<sub>2</sub>) in the atmosphere is considered to be one of the main causes of the global warming problem. Moreover, there is an international movement to reduce the emission of CO<sub>2</sub> by imposing different measures such as carbon tax. Biological CO<sub>2</sub> fixation has been extensively investigated as part of efforts to solve the global warming problem. Microalgae are fast growing systems that can consume high quantities of CO<sub>2</sub> to produce different types of biomass. The efficiency of microalgae is highly related to the concentration of CO<sub>2</sub> in the growth atmosphere and the higher the concentration of CO<sub>2</sub> the better is the growth and hence productivity. The present review aimed at shedding some light upon microalgal capability to sustain their viability and propagate under high CO<sub>2</sub> concentration

CULTIVO DE Chlorella fusca LEB 111 E Chlorella minutissima LEB 114 ISOLADAS DE LAGOAS DE TRATAMENTO DE EFLUENTES DE ORIGEM TERMELÉTRICA

“…Alguns pesquisadores relatam que espécies de microalgas nativas podem ser mais tolerantes a condições locais, apresentando maiores taxas fotossintéticas (Radmann et al, 2011;Salih, 2011). O isolamento de microalgas provenientes da região pode maximizar a eficiência destes microorganismos em biofixar CO 2 .…”

Use of Solid Waste from Thermoelectric Plants for the Cultivation of Microalgae

“…The duration of this phase depends on the initial inoculum concentration, the pre-cultivation time and the physiological state of the microorganism. Native species of microalgae are more tolerant of local conditions and exhibit higher rates of photosynthesis and biomass production (Salih 2011). The environmental impact of the high concentrations of solid residues produced by burning the fossil fuels on such strains would be reduced compared with that on native microorganisms, eliminating the need to look for tolerant strains.…”

Effects of Natural Light Dilution on Microalgae Growth

“…In terms of carbon capture and storage, various studies have been done to showcase the ability of carbon fixation by microalgae, which showed better results compared to plants due to its higher growth rate [3]. After all, both microalgae and plants capture and fix CO 2 through natural photosynthesis process.…”