Biosequestration of industrial off-gas CO 2 for enhanced lipid productivity in open microalgae cultivation systems

Hosseini, Nekoo Seyed; Shang, Helen; Scott, John A.

doi:10.1016/j.rser.2018.04.086

Cited by 72 publications

(30 citation statements)

References 217 publications

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“…Over the past two centuries, human activity has had a pronounced effect on the natural environment [ 1 ]. Anthropogenic CO 2 emissions have led to a range of detrimental environmental impacts, including the acidification of ocean waters, rising sea levels, and increasing global temperatures [ 2 , 3 ]. Accordingly, climate change mitigation and CO 2 management have become a top priority globally, which is increasingly reflected in our political, social, and economic realms.…”

Section: Introductionmentioning

confidence: 99%

“…The commercial value of microalgal biomass enables a direct link between CO 2 sequestration and the generation of value-added products which can be used to subsidize the overall process [ 7 ]. Despite the benefits of such an approach, there is a need for further research focusing on developing new tools, growth systems, and methodologies to make this an economically viable, large-scale option [ 3 , 12 ]. Notably, the ability to track and measure the culture’s CO 2 uptake rate and efficiency in real time is crucial in order to allow for process monitoring, assessment, and optimization.…”

Section: Introductionmentioning

confidence: 99%

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A Novel System for Real-Time, In Situ Monitoring of CO2 Sequestration in Photoautotrophic Biofilms

et al. 2020

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Climate change brought about by anthropogenic CO2 emissions has created a critical need for effective CO2 management solutions. Microalgae are well suited to contribute to efforts aimed at addressing this challenge, given their ability to rapidly sequester CO2 coupled with the commercial value of their biomass. Recently, microalgal biofilms have garnered significant attention over the more conventional suspended algal growth systems, since they allow for easier and cheaper biomass harvesting, among other key benefits. However, the path to cost-effectiveness and scaling up is hindered by a need for new tools and methodologies which can help evaluate, and in turn optimize, algal biofilm growth. Presented here is a novel system which facilitates the real-time in situ monitoring of algal biofilm CO2 sequestration. Utilizing a CO2-permeable membrane and a tube-within-a-tube design, the CO2 sequestration monitoring system (CSMS) was able to reliably detect slight changes in algal biofilm CO2 uptake brought about by light–dark cycling, light intensity shifts, and varying amounts of phototrophic biomass. This work presents an approach to advance our understanding of carbon flux in algal biofilms, and a base for potentially useful innovations to optimize, and eventually realize, algae biofilm-based CO2 sequestration.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel System for Real-Time, In Situ Monitoring of CO2 Sequestration in Photoautotrophic Biofilms

et al. 2020

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“…The reasons for this seemed to come from two aspects: firstly, the quickly depletion of nitrate nitrogen (Fig. 4), which resulted in nitrogen starvation that promoted lipid synthesis by directing the carbon flux toward the specific pathway (32), and secondly CO2 generated by DT06 increased CO2 concentration, which not only facilitated lipid synthesis (33)(34)(35) but also influenced the composition of fatty acid (36)(37)(38), and thus might be the cause for the enrichment of C16-C18 fatty acids, particularly oleic acid in NM (Table 3) as well.…”

Section: Discussionmentioning

confidence: 99%

Enhancing Algal Biomass, Lipid and Astaxanthin Production by Mix-Cultivation of Haematococcus Pluvialis With Simplicillium Lanosoniveum DT06

Yan

Xing

Dong

et al. 2021

Preprint

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To enhance algal lipid and astaxanthin synthesis, the astaxanthin-producing green alga Haematococcus pluvialis was mix-cultivated with the antibiotic-synthesizing fungus Simplicillium lanosoniveum DT06 under non-aseptic conditions (NM) in this study. Results showed that in contrast to aseptic pure culture (AH) and non-aseptic pure culture (NH) of H. pluvialis , the production of cell (biomass), lipids and astaxanthin increased 56% and 119%, 112.4% and 279%, 74% and 175%, reaching 2.45 g/l, 0.837 g/l and 88.84 mg/l respectively; the average growth rate and the average specific growth rate increased 60.8% and 133.1 %, 19% and 31.6%, reaching 194.2 mg l -1 d -1 and 0.25 d -1 respectively; and the average lipid synthesis rate and average specific lipid synthesis rate increased 112.5% and 278.66%, 36.15% and 97%, reaching 69.75 mg l -1 d -1 and 28.47 mg g -1 d -1 respectively; and also the content of C16-C18 fatty acids that are suitable for biofuels production increased to 83.19%. Therefore, NM provides an efficient and economical way for the production of biofuels.

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“…Carbon dioxide capture is another opportunity for microalgae. The utilization of microalgae cultures in industrial processes can capture harmful gas emissions [181]. The accumulation of carbon dioxide can be applied under specific conditions to match with proper algal strains in their mechanisms of photosynthesis, leading to a decrease in pollution and produce biomass [182].…”

Section: Opportunities For Improvementmentioning

confidence: 99%

Mexican Microalgae Biodiversity and State-Of-The-Art Extraction Strategies to Meet Sustainable Circular Economy Challenges: High-Value Compounds and Their Applied Perspectives

et al. 2019

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In recent years, the demand for naturally derived products has hiked with enormous pressure to propose or develop state-of-the-art strategies to meet sustainable circular economy challenges. Microalgae possess the flexibility to produce a variety of high-value products of industrial interests. From pigments such as phycobilins or lutein to phycotoxins and several polyunsaturated fatty acids (PUFAs), microalgae have the potential to become the primary producers for the pharmaceutical, food, and agronomical industries. Also, microalgae require minimal resources to grow due to their autotrophic nature or by consuming waste matter, while allowing for the extraction of several valuable side products such as hydrogen gas and biodiesel in a single process, following a biorefinery agenda. From a Mexican microalgae biodiversity perspective, more than 70 different local species have been characterized and isolated, whereas, only a minimal amount has been explored to produce commercially valuable products, thus ignoring their potential as a locally available resource. In this paper, we discuss the microalgae diversity present in Mexico with their current applications and potential, while expanding on their future applications in bioengineering along with other industrial sectors. In conclusion, the use of available microalgae to produce biochemically revenuable products currently represents an untapped potential that could lead to the solution of several problems through green technologies. As such, if the social, industrial and research communities collaborate to strive towards a greener economy by preserving the existing biodiversity and optimizing the use of the currently available resources, the enrichment of our society and the solution to several environmental problems could be attained.

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Biosequestration of industrial off-gas CO 2 for enhanced lipid productivity in open microalgae cultivation systems

Cited by 72 publications

References 217 publications

A Novel System for Real-Time, In Situ Monitoring of CO2 Sequestration in Photoautotrophic Biofilms

A Novel System for Real-Time, In Situ Monitoring of CO2 Sequestration in Photoautotrophic Biofilms

Enhancing Algal Biomass, Lipid and Astaxanthin Production by Mix-Cultivation of Haematococcus Pluvialis With Simplicillium Lanosoniveum DT06

Mexican Microalgae Biodiversity and State-Of-The-Art Extraction Strategies to Meet Sustainable Circular Economy Challenges: High-Value Compounds and Their Applied Perspectives

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