Carbon Dioxide Sequestering Using Microalgal Systems

Stepan, Daniel J.; Shockey, R.E.; Moe, T.A.; Dorn, Ryan

doi:10.2172/882000

Cited by 21 publications

(4 citation statements)

References 24 publications

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“…Another study reported that 50 MW power plants could generate ~414,000 t/yrCO 2, and a 1000-ha open raceway pond could mitigate ~250,000 t/yrCO 2 . In this particular study, algae could reduce 50% of CO 2 [149]. However, axenic cultures are preferred in the food and pharmaceutical industries.…”

Section: Techno-economic Challenges With Microalgaementioning

confidence: 84%

Role of Microalgae in Global CO2 Sequestration: Physiological Mechanism, Recent Development, Challenges, and Future Prospective

et al. 2021

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The rising concentration of global atmospheric carbon dioxide (CO2) has severely affected our planet’s homeostasis. Efforts are being made worldwide to curb carbon dioxide emissions, but there is still no strategy or technology available to date that is widely accepted. Two basic strategies are employed for reducing CO2 emissions, viz. (i) a decrease in fossil fuel use, and increased use of renewable energy sources; and (ii) carbon sequestration by various biological, chemical, or physical methods. This review has explored microalgae’s role in carbon sequestration, the physiological apparatus, with special emphasis on the carbon concentration mechanism (CCM). A CCM is a specialized mechanism of microalgae. In this process, a sub-cellular organelle known as pyrenoid, containing a high concentration of Ribulose-1,5-bisphosphate carboxylase-oxygenase (Rubisco), helps in the fixation of CO2. One type of carbon concentration mechanism in Chlamydomonas reinhardtii and the association of pyrenoid tubules with thylakoids membrane is represented through a typical graphical model. Various environmental factors influencing carbon sequestration in microalgae and associated techno-economic challenges are analyzed critically.

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Section: Techno-economic Challenges With Microalgaementioning

confidence: 84%

Role of Microalgae in Global CO2 Sequestration: Physiological Mechanism, Recent Development, Challenges, and Future Prospective

et al. 2021

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“…Aboveground plant parts provide organic carbon sources for roots and soil organisms, thus influencing strongly the underground system. In particular, rhizosphere secretions provide carbon sources and energy for the growth of microorganisms (Stephan Shockey, Moe & Dorn, 2002;van der Wielen, 2006;Selesi, Pattis, Schmid, Kandeler & Hartmann, 2007).…”

Section: Soil Microbesmentioning

confidence: 99%

Effect of industrial crop Jerusalem artichoke on the micro-ecological rhizosphere environment in saline soil

Shao

Long

Gao

et al. 2021

Preprint

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Salinity is not only a threat to organisms and ecosystems, but also a major factor restricting the development of agricultural production. This study aimed to explore the modification effect of in-situ Jerusalem artichoke (genotype NY-1) cultivation on the rhizosphere micro-ecological environment in the saline-alkali region along the southeast coast of China. We analyzed the change of carbon and nitrogen in the saline soil from a microbial perspective, through the quantification of the area of root channels, rhizosphere secretions and soil microbiome (cbbL, cbbM and nifH). The root channels of NY-1 not only improved the physical structure of saline soil, but also provided a living space for microorganisms, afforded basic conditions for the optimization of the soil micro-ecological environment. In addition, rhizosphere secretions (from roots of NY-1 as well as microorganisms), such as carbohydrates, hydrocarbons, acids, etc., could be considered as a way to improve the saline-alkali soil habitat. NY-1 increased the diversity and abundance of autotrophic and nitrogen-fixing bacteria in saline soil (rhizosphere > bulk soils), which should be a biological way to increase the amount of carbon and nitrogen fixation in soil. Moreover, some of the detected genera (Sideroxydans, Thiobacillus, Sulfuritalea, Desulfuromonas, etc.) participate in the carbon and nitrogen cycles, and in the biogeochemical cycle of other elements. In short, Jerusalem artichoke can improve not only the physical and chemical properties of saline-alkali soil, but also promote material circulation and energy flow in the micro-ecological rhizosphere environment of saline soils.

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“…Microalgae biomass consists of about 50 % carbon by dry weight, which suggested that algae has higher tolerance for CO 2 and flourishes rapidly in carbon availability. Research documented that it only takes 1.5-2.0 kg of CO 2 to grow about 1.0 kg of algae biomass (Sobczuk et al 2000), and for efficient algae cultivation, CO 2 availability in addition to the atmospheric percentage is required (Brewer 2013;Jeong et al 2003;Stepan et al 2002). Also, algae utilize solar radiation via photosynthetic process to capture CO 2 and reduce it into carbon molecules in the form of energy as shown in Eq.…”

Section: Chemistry Of Algae-derived Biofuel Production Harvesting Amentioning

confidence: 99%

Algae-Derived Biomass for Sustainable and Renewable Biofuel Production

Bwatanglang

Mohammad

Gupta

et al. 2015

Agricultural Biomass Based Potential Materials

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The rapid increase in demand for energy efficiency and sustainability in recent years, the ecofriendly and renewable sources of energy have taken the center stage by replacing the fossil-based energy resources as they associated with serious environmental and health-related issues. These negative factors ignite to rethink and global shift towards a more carbon-neutral source of energy that is biodegradable, sustainable, and ecofriendly. Agro-based materials from crops and post-harvest residues are currently being explored to meet these challenges as primary feedstock for the production of ethanol, agrochemicals, and biodiesel. However, the cultivation of oilseed crops and other cash crops essentially for biodiesel production will avertedly water down on food supply and security and thus we report in this chapter an ideal alternative source of energy derived from microalgae that hold great promise for the future. Cultivation of microalgae will not compete with food productions and fodder demands, can be cultivated anywhere, will not compete with arable land, has simple growth cycle that can produce lipids all year-round under short period of time requiring less water, and has metabolic pathways that establish atmospheric carbon-neutral effect and balance. With this, the aim of the current chapter is to discuss the potentials of microalgae as third-generation energy source, focusing basically on simple taxonomy, lipid biosynthesis, and various cultivation methods. We also reviewed some simple principles used for the optimization of lipid content in microalgae under various lipid-induction techniques and a brief look into the biosequestration characteristics of microalgae. Furthermore, various methods involved in harvesting and extraction of lipid from microalgae and the chemistry for I. B. Bwatanglang et al. 342 the conversion of lipid extracted from microalgae into biodiesel following simple transesterification process are equally touched at the surface in this chapter. Based on the aforementioned, this chapter comes to conclusion elucidating algae lipid metabolism and production as key fundamentals to consider towards achieving the most desired global energy demand that is sustainable and ecofriendly.

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Carbon Dioxide Sequestering Using Microalgal Systems

Cited by 21 publications

References 24 publications

Role of Microalgae in Global CO2 Sequestration: Physiological Mechanism, Recent Development, Challenges, and Future Prospective

Role of Microalgae in Global CO2 Sequestration: Physiological Mechanism, Recent Development, Challenges, and Future Prospective

Effect of industrial crop Jerusalem artichoke on the micro-ecological rhizosphere environment in saline soil

Algae-Derived Biomass for Sustainable and Renewable Biofuel Production

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