Hot and bright: Thermal and light environments for the culture of Oedogonium intermedium and the geographical limits for large-scale cultivation in Australia

Cole, Andrew J.; Praeger, Christina; Mannering, Thomas D.; Nys, Rocky de; Magnusson, Marie

doi:10.1016/j.algal.2018.08.004

Cited by 9 publications

(2 citation statements)

References 31 publications

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“…Average culture temperatures during the Australian winter ranged from 18.4 °C (± 2.2) to 19.1 °C (± 2.24). At a latitude of 19.33°S in Australia, daily average solar irradiance varies between 173.6 W/m 2 and 231.5 W/m 2 in the winter (Cole et al, 2018). By comparison, the greatest harvest productivity was slightly higher in this study at 13.7 (± 0.3) g VSS/m 2 -day, but both studies reveal high productivities of Oedogonium with CO2 supplementation.…”

Section: Discussioncontrasting

confidence: 61%

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Comparing Harvest Productivity of the Filamentous Alga Oedogonium with Microalgae

O’Connell

Wilkie

2018

UFJUR

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As the planet is faced with depletion of its natural resources, alternative and sustainable energy sources are becoming increasingly sought after. Research on the growth of algae has revealed their potential for carbon capture to reduce greenhouse gas emissions and for conversion into a fuel source for bioenergy applications. Filamentous algae have attracted recent attention as an optimal species due to their ease of harvest and dominance over other species. To determine the most suitable species for future biomass applications, a 1000-L open raceway pond was inoculated with the freshwater filamentous alga, Oedogonium. The pond culture was harvested weekly to determine the effects of CO2 addition on culture density (mg VSS/L) and harvest productivity (g VSS/m2-day). An additional two 1000-L raceway ponds with established cultures of microalgae already receiving CO2 were used as a comparison to the growth of Oedogonium. After 3 weeks, Oedogonium harvest productivity exceeded both microalgal ponds at 13.7 (± 0.2) g VSS/m2-day compared to 9.3 (± 0.7) and 9.5 (± 0.3) g VSS/m2-day for the microalgae.

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Section: Discussioncontrasting

confidence: 61%

“…Solar irradiance was also similar in the current study. Optimal temperature and solar irradiance conditions for the growth of Oedogonium were identified to be between 20 and 35°C and greater than 173.6 W/m 2 (Cole et al, 2018). Thus, harvest productivity of Oedogonium might be even higher during summer months when temperatures are higher.…”

Section: Discussionmentioning

confidence: 95%

Comparing Harvest Productivity of the Filamentous Alga Oedogonium with Microalgae

O’Connell

Wilkie

2018

UFJUR

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Evaluating the performance of freshwater macroalgae in the bioremediation of nutrient-enriched water in temperate environments

et al. 2019

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Screening protocol for freshwater filamentous macroalgae bioremediation of primary municipal wastewater

Novak,

Magnusson,

Craggs

et al. 2024

J Appl Phycol

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A screening protocol was developed and applied to isolate and select cultivars of freshwater filamentous macroalgae for year-round monoculture cultivation and nutrient bioremediation of primary municipal wastewater. The screening protocol is a step-by-step guide to identify robust cultivars which possess key attributes of competitive dominance, high biomass productivity and bioremediation performance under local seasonal and extreme conditions. Forty-four mixed samples of freshwater filamentous macroalgae were collected during summer and winter from a range of local aquatic environments. Eleven isolated cultivars were grown in primary treated municipal wastewater and their biomass productivity and bioremediation performance under local ambient (summer and winter), extreme summer (max. summer) and winter (min. winter) conditions were assessed. Extreme conditions proved to be an important determining factor for cultivar selection as biomass productivity and bioremediation performance significantly declined under min. winter conditions. However, biomass productivity was not directly related to bioremediation performance, as cultivars with low growth rates maintained high nutrient removal rates under min. winter conditions. Top performing cultivars were Klebsormidium sp. (KLEB B) which reduced total ammoniacal-N concentrations by 99.9% to 0.01 mg L-1 (± 0.01 SE), Oedogonium sp. (OEDO D) which reduced nitrate-N concentrations by 90.2% to 0.08 mg L-1 (± 0.7 SE) and Rhizoclonium sp. which reduced phosphate concentrations by 98.7% to 0.02 mg L-1 (± 0.01 SE). Based on overall biomass productivity and bioremediation performance across seasonal and extreme conditions Klebsormidium sp. (KLEB B), Stigeoclonium sp. (STIG A) and Ulothrix sp. were identified as top performing cultivars suitable for the nutrient bioremediation of primary municipal wastewater.

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Hot and bright: Thermal and light environments for the culture of Oedogonium intermedium and the geographical limits for large-scale cultivation in Australia

Cited by 9 publications

References 31 publications

Comparing Harvest Productivity of the Filamentous Alga Oedogonium with Microalgae

Comparing Harvest Productivity of the Filamentous Alga Oedogonium with Microalgae

Evaluating the performance of freshwater macroalgae in the bioremediation of nutrient-enriched water in temperate environments

Screening protocol for freshwater filamentous macroalgae bioremediation of primary municipal wastewater

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