Modeling the transformation of atmospheric CO2into microalgal biomass

The Analyst ◽  
2017 ◽  
Vol 142 (21) ◽  
pp. 4089-4098 ◽  
Author(s):  
Mohammed Fahad Hasan ◽  
Frank Vogt
Keyword(s):  
Greenhouse Gas ◽  
Biomass Production ◽  
Marine Phytoplankton ◽  
Microalgal Biomass

Marine phytoplankton acts as a considerable sink of atmospheric CO2as it sequesters large quantities of this greenhouse gas for biomass production.

scholarly journals Improving microalgal biomass production with industrial CO2 for bio-oil obtention by hydrothermal liquefaction

Fuel ◽  
2021 ◽  
Vol 302 ◽  
pp. 121236
Author(s):  
Alejandra M. Miranda ◽  
Alex A. Sáez ◽  
Brenda S. Hoyos ◽  
Deiver A. Gómez ◽  
Gabriel J. Vargas
Keyword(s):  
Biomass Production ◽  
Hydrothermal Liquefaction ◽  
Microalgal Biomass ◽  
Bio Oil

Mixotrophic cultivation of Nephroselmis sp. using industrial wastewater for enhanced microalgal biomass production

2016 ◽  
Vol 95 ◽  
pp. 527-533 ◽  
Author(s):  
Min-Kyu Ji ◽  
Hyun-Shik Yun ◽  
Buyng Su Hwang ◽  
Akhil N. Kabra ◽  
Byong-Hun Jeon ◽  
...  
Keyword(s):  
Biomass Production ◽  
Industrial Wastewater ◽  
Mixotrophic Cultivation ◽  
Microalgal Biomass

Influence of photobioreactor configuration on microalgal biomass production

2020 ◽  
Vol 43 (8) ◽  
pp. 1487-1497
Author(s):  
Srijoni Banerjee ◽  
Soumendu Dasgupta ◽  
Debabrata Das ◽  
Arnab Atta
Keyword(s):  
Biomass Production ◽  
Microalgal Biomass

scholarly journals Effect of PHRs and PCPs on Microalgal Growth, Metabolism and Microalgae-Based Bioremediation Processes: A Review

2019 ◽  
Vol 20 (10) ◽  
pp. 2492 ◽  
Author(s):  
Krystian Miazek ◽  
Beata Brozek-Pluska
Keyword(s):  
Oxidative Stress ◽  
Enzyme Activity ◽  
Biomass Production ◽  
Value Added ◽  
Cellular Morphology ◽  
Personal Care ◽  
Microalgal Biomass ◽  
Single Process ◽  
Growth Metabolism ◽  
Bioremediation Processes

In this review, the effect of pharmaceuticals (PHRs) and personal care products (PCPs) on microalgal growth and metabolism is reported. Concentrations of various PHRs and PCPs that cause inhibition and toxicity to growths of different microalgal strains are summarized and compared. The effect of PHRs and PCPs on microalgal metabolism (oxidative stress, enzyme activity, pigments, proteins, lipids, carbohydrates, toxins), as well as on the cellular morphology, is discussed. Literature data concerning the removal of PHRs and PCPs from wastewaters by living microalgal cultures, with the emphasis on microalgal growth, are gathered and discussed. The potential of simultaneously bioremediating PHRs/PCPs-containing wastewaters and cultivating microalgae for biomass production in a single process is considered. In the light of reviewed data, the feasibility of post-bioremediation microalgal biomass is discussed in terms of its contamination, biosafety and further usage for production of value-added biomolecules (pigments, lipids, proteins) and biomass as a whole.

scholarly journals Simulating Long-Term Development of Greenhouse Gas Emissions, Plant Biomass, and Soil Moisture of a Temperate Grassland Ecosystem under Elevated Atmospheric CO2

Agronomy ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 50
Author(s):  
Ralf Liebermann ◽  
Lutz Breuer ◽  
Tobias Houska ◽  
David Kraus ◽  
Gerald Moser ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Elevated Co2 ◽  
Biomass Production ◽  
Atmospheric Co2 ◽  
N2o Emissions ◽  
Gas Emissions ◽  
Co2 Concentrations

The rising atmospheric CO2 concentrations have effects on the worldwide ecosystems such as an increase in biomass production as well as changing soil processes and conditions. Since this affects the ecosystem’s net balance of greenhouse gas emissions, reliable projections about the CO2 impact are required. Deterministic models can capture the interrelated biological, hydrological, and biogeochemical processes under changing CO2 concentrations if long-term observations for model testing are provided. We used 13 years of data on above-ground biomass production, soil moisture, and emissions of CO2 and N2O from the Free Air Carbon dioxide Enrichment (FACE) grassland experiment in Giessen, Germany. Then, the LandscapeDNDC ecosystem model was calibrated with data measured under current CO2 concentrations and validated under elevated CO2. Depending on the hydrological conditions, different CO2 effects were observed and captured well for all ecosystem variables but N2O emissions. Confidence intervals of ensemble simulations covered up to 96% of measured biomass and CO2 emission values, while soil water content was well simulated in terms of annual cycle and location-specific CO2 effects. N2O emissions under elevated CO2 could not be reproduced, presumably due to a rarely considered mineralization process of organic nitrogen, which is not yet included in LandscapeDNDC.

scholarly journals Enhanced production of biomass and lipids by Euglena gracilis via co-culturing with a microalga growth-promoting bacterium, Emticicia sp. EG3

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Tadashi Toyama ◽  
Tsubasa Hanaoka ◽  
Koji Yamada ◽  
Kengo Suzuki ◽  
Yasuhiro Tanaka ◽  
...  
Keyword(s):  
Biomass Production ◽  
Euglena Gracilis ◽  
Culture System ◽  
Municipal Wastewater ◽  
Wastewater Effluent ◽  
Biofuel Production ◽  
Second Step ◽  
Microalgal Biomass ◽  
Enhanced Production ◽  
Growth Promoting

Abstract Background Euglena gracilis, a unicellular flagellated microalga, is regarded as one of the most promising species as microalgal feedstock for biofuels. Its lipids (mainly wax esters) are suitable for biodiesel and jet fuel. Culture of E. gracilis using wastewater effluent will improve the economics of E. gracilis biofuel production. Enhancement of the productivity of E. gracilis biomass is critical to creating a highly efficient biofuels production system. Certain bacteria have been found to promote microalgal growth by creating a favorable microenvironment. These bacteria have been characterized as microalgae growth-promoting bacteria (MGPB). Co-culture of microalgae with MGPB might offer an effective strategy to enhance microalgal biomass production in wastewater effluent culture systems. However, no MGPB has been identified to enhance the growth of E. gracilis. The objectives of this study were, therefore, to isolate and characterize the MGPB effective for E. gracilis and to demonstrate that the isolated MGPB indeed enhances the production of biomass and lipids by E. gracilis in wastewater effluent culture system. Results A bacterium, Emticicia sp. EG3, which is capable of promoting the growth of microalga E. gracilis, was isolated from an E. gracilis-municipal wastewater effluent culture. Biomass production rate of E. gracilis was enhanced 3.5-fold and 3.1-fold by EG3 in the co-culture system using a medium of heat-sterilized and non-sterilized wastewater effluent, respectively, compared to growth in the same effluent culture but without EG3. Two-step culture system was examined as follows: E. gracilis was cultured with or without EG3 in wastewater effluent in the first step and was further grown in wastewater effluent in the second step. Production yields of biomass and lipids by E. gracilis were enhanced 3.2-fold and 2.9-fold, respectively, in the second step of the system in which E. gracilis was co-cultured with EG3 in the first step. Conclusion Emticicia sp. EG3 is the first MGPB for E. gracilis. Growth-promoting bacteria such as EG3 will be promising agents for enhancing E. gracilis biomass/biofuel productivities.

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