The role of CO2 enrichment of aerating gas in the growth of an estuarine diatom

Pruder, Gary D.; Bolton, Ellis T.

doi:10.1016/0044-8486(79)90133-9

Cited by 31 publications

(23 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4). Similar calculations can be found in Pruder & Bolton (1979), Stumm &Morgan (1996), andGoldman (1999). An example of nutrient decrease and pH rise over time in a marine enclosure may be seen in McAllister et al (1961).…”

Section: The Origin Of Variability In Coastal Seawater Phsupporting

confidence: 57%

“…Curve fits are interpolations ) also indicate little change in growth rate over a range of pH 6.8 to 8.4. In an experiment where the pH was allowed to drift to higher values as the culture drew down the CO 2 , Pruder & Bolton (1979) found that T. pseudonana grew at a constant rate until pH 8.8 to 8.9 was reached, then stopped. Growth resumed in the culture upon the addition of acid and the lowering of the pH.…”

Section: Skeletonema Costatummentioning

confidence: 99%

“…The pH drift experiments of Goldman (1999) and one experiment by Pruder & Bolton (1979) closely simulate the way pH change occurs in coastal environments, through injections and removals of CO 2 . The behavior of species in these experiments should closely simulate the results expected in the field.…”

Section: Experimental Manipulation Of Phmentioning

confidence: 99%

See 2 more Smart Citations

Effects of pH on coastal marine phytoplankton

Hinga

2002

Mar. Ecol. Prog. Ser.

275

159

View full text Add to dashboard Cite

Twenty-one studies on the effects of pH on marine phytoplankton were found and are herein reviewed. Under laboratory conditions, the optimum pH for growth is between pH 6.3 and 10. Some species can grow well at a wide range of pH, while others have growth rates that vary greatly over a 0.5 to 1 pH unit change. Different clones of the same species were found to have slightly to strikingly different relationships between pH and growth rate. The pH in typical coastal environments may vary by 1 or more pH units, with over 10% of observations being more than 0.5 units above or below equilibrium pH. This range is great enough, relative to the observed pH effect on growth rate for many species, for seawater pH to affect the growth rate, and hence the timing and abundance of coastal marine phytoplankton species. Effects of pH are not limited to extreme pH conditions. The growth rates of some species are influenced significantly by changes in pH near the equilibrium pH of coastal seawater. Care must be taken in growth experiments with phytoplankton to avoid effects due to pH of the culture media. Eutrophication of coastal waters may amplify the range of pH found in coastal environments. KEY WORDS: pH · Phytoplankton · EutrophicationResale or republication not permitted without written consent of the publisher

show abstract

Section: The Origin Of Variability In Coastal Seawater Phsupporting

confidence: 57%

Section: Skeletonema Costatummentioning

confidence: 99%

See 1 more Smart Citation

Effects of pH on coastal marine phytoplankton

Hinga

2002

Mar. Ecol. Prog. Ser.

275

159

View full text Add to dashboard Cite

show abstract

“…Changing pH in media may limit algal growth via metabolic inhibition [119]. Pruder and Bolton observed that T. pseudonana cells adapted to low pH (6.5) had lower growth rate at sub-optimal pH (8.8) [120]. Normal growth rate was restored after the pH was lowered by addition of HCl.…”

Section: Phmentioning

confidence: 99%

“…Higher pH also lowers the affinity of algae to free CO 2 [121,123]. In photoautotrophic cultures, replacement of CO 2 taken up for photosynthesis is slower resulting in a decrease of CO 2 partial pressure and thus leading to an increase in pH [120]. Alkaline pH increases the flexibility of the cell wall of mother cells, which prevents its rupture and inhibits autospore release, thus increasing the time for cell cycle completion [124].…”

Section: Phmentioning

confidence: 99%

Effects of Environmental Factors and Nutrient Availability on the Biochemical Composition of Algae for Biofuels Production: A Review

2013

View full text Add to dashboard Cite

Due to significant lipid and carbohydrate production as well as other useful properties such as high production of useful biomolecular substrates (e.g., lipids) and the ability to grow using non-potable water sources, algae are being explored as a potential high-yield feedstock for biofuels production. In both natural and engineered systems, algae can be exposed to a variety of environmental conditions that affect growth rate and cellular composition. With respect to the latter, the amount of carbon fixed in lipids and carbohydrates (e.g., starch) is highly influenced by environmental factors and nutrient availability. Understanding synergistic interactions between multiple environmental variables and nutritional factors is required to develop sustainable high productivity bioalgae systems, which are essential for commercial biofuel production. This article reviews the effects of environmental factors (i.e., temperature, light and pH) and nutrient availability (e.g., carbon, nitrogen, phosphorus, potassium, and trace metals) as well as cross-interactions on the biochemical composition of algae with a special focus on carbon fixation and partitioning of carbon from a biofuels perspective.

show abstract

Carbon dioxide uptake efficiency by outdoor microalgal cultures in tubular airlift photobioreactors

Sobczuk

Camacho

Rubio

et al. 2000

Biotechnol. Bioeng.

View full text Add to dashboard Cite

The influence of solar irradiance and carbon dioxide molar fraction of injected CO2–air mixtures on the behavior of outdoor continuous cultures of the microalga Phaeodactylum tricornutum in tubular airlift photobioreactors was analyzed. Instantaneous solar irradiance, pH, dissolved oxygen, temperature, biomass concentration, and the mass flow rates of both the inlet and outlet oxygen and carbon with both the liquid and gas phases were measured. In addition, elemental analysis of the biomass and the cell‐free culture medium was performed. The oxygen production rate and carbon dioxide consumption rate increased hyperbolically with the incident solar irradiance on the reactor surface. Carbon losses showed a negative correlation with the daily variation of the carbon dioxide consumption rate. The maximum CO2 uptake efficiency was 63% of the CO2 supplied when the CO2 concentration in the gas supplied was 60% v/v. Carbon losses were >100% during the night, due to CO2 production by respiration, and hyperbolically decreased to values of 10% to 20% in the midday hours. An increase in the carbon fixed in the biomass with the solar cycle was observed. A slight daily decrease of carbon content of the cell‐free culture medium indicated the existence of carbon accumulation in the culture. A decrease in CO2 molar fraction in the injected gas had a double benefit: first, the biomass productivity of the system was enhanced from 2.05 to 2.47 g L−1 day−1 by reduction of CO2 inhibition and/or pH gradients; and second, the carbon losses during the daylight period were reduced by 60%. The fluid dynamics in the reactor also influenced the carbon losses: the higher the liquid flow rate the higher the carbon losses. By using a previous mass transfer model the experimental results were simulated and the usefulness of this method in the evaluation and scale‐up of tubular photobioreactors was established. © 2000 John Wiley & Sons, Inc. Biotechnol Bioeng 67: 465–475, 2000.

show abstract

The role of CO2 enrichment of aerating gas in the growth of an estuarine diatom

Cited by 31 publications

References 9 publications

Effects of pH on coastal marine phytoplankton

Effects of pH on coastal marine phytoplankton

Effects of Environmental Factors and Nutrient Availability on the Biochemical Composition of Algae for Biofuels Production: A Review

Carbon dioxide uptake efficiency by outdoor microalgal cultures in tubular airlift photobioreactors

Contact Info

Product

Resources

About