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The effect on growth of Chlamydomonas reinhardtii of flue gas from a power plant based on waste combustion.

Mortensen LM, Gislerød HR - AMB Express (2014)

Bottom Line: Undiluted flue gas reduced the dry weight production by around 20-25% when grown at a photon flux density (PFD) of 300 μmol m(-2) s(-1) artificial light and at 24 or 33°C, compared with the other treatments.A less negative effect was found at the highest flue gas concentration when the algae were grown at 75 μmol m(-2) s(-1) PFD.It was concluded that the negative effect of the undiluted flue gas was attributable to the high CO2 concentration and not to the other pollutants.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Plant Science, The University of Life Sciences, Ås NO-1432, Norway.

ABSTRACT
Flue gases from a power plant based on waste combustion were tested as a carbon dioxide (CO2) source for growing Chlamydomonas reinhardtii. To achieve recognition as an environmentally friendly hydrogen production method, waste gases should be used to grow this hydrogen-producing microalgae. The algae were grown in undiluted flue gas containing 11.4±0.2% CO2 by volume, in diluted flue gas containing 6.7±0.1% or 2.5±0.0% CO2, and in pure liquid CO2 at a concentration of 2.7±0.2%. The NOx concentration was 45±16 mg m(-3), the SO2 concentration was 36±19 mg m(-3), the HCl concentration 4.1±1.0 mg m(-3) and the O2 concentration 7.9±0.2% in the undiluted flue gas. Undiluted flue gas reduced the dry weight production by around 20-25% when grown at a photon flux density (PFD) of 300 μmol m(-2) s(-1) artificial light and at 24 or 33°C, compared with the other treatments. A less negative effect was found at the highest flue gas concentration when the algae were grown at 75 μmol m(-2) s(-1) PFD. Growing the algae outdoors at a day length of 12.5 h and a temperature of around 24°C, the dry weight production was higher (about 15%) in the 2.6% CO2 flue gas treatment compared with all other treatments. Reducing the light level by 30% through shading did not affect the dry weight production. Calculated on aerial basis the productivity reached approximately 70 g m(-2) day(-1) in the 300 μmol m(-2) s(-1) PFD treatment (corresponding to 25 mol m(-2) day(-1)) and approximately 17 g m(-2) day(-1) in the 75μmol m(-2) s(-1) PFD treatment (corresponding to 6.5 mol m(-2) day(-1)). The outdoor production reached around 14 g m(-2) day(-1). It was concluded that the negative effect of the undiluted flue gas was attributable to the high CO2 concentration and not to the other pollutants.

No MeSH data available.


Related in: MedlinePlus

The concentration of different gases in undiluted flue gas.
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Figure 1: The concentration of different gases in undiluted flue gas.

Mentions: The flue gas was provided by ‘Borregaard Waste to Energy’ located in Sarpsborg, Norway (www.hafslund.no). This modern fuel-flexible energy recovery plant burns approximately 80,000 tonnes of waste-based fuel and produces approximately 230 GWh per year. It has a high environmental standard. The CO2, O2, NOx, NO, NO2, SO2, HCl, CO and TOC concentrations in the flue gas were measured at 10-minute intervals by an ABB Advance Cemas FTIR NT continuous monitoring system with extra modules for O2 and TOC measurements (Figure 1, Table 1). NO constituted the main part of the NOx, while NO2 contributed only 3.4±1.4% of the total NO+NO2 (data not presented). The mean O2 concentration in the flue gas was 7.9±0.2%. In addition, license measurements on a series of heavy metals and dioxins in the flue gas were performed 2-4 times per year since the start of the power plant in 2010 (Table 1).


The effect on growth of Chlamydomonas reinhardtii of flue gas from a power plant based on waste combustion.

Mortensen LM, Gislerød HR - AMB Express (2014)

The concentration of different gases in undiluted flue gas.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4230831&req=5

Figure 1: The concentration of different gases in undiluted flue gas.
Mentions: The flue gas was provided by ‘Borregaard Waste to Energy’ located in Sarpsborg, Norway (www.hafslund.no). This modern fuel-flexible energy recovery plant burns approximately 80,000 tonnes of waste-based fuel and produces approximately 230 GWh per year. It has a high environmental standard. The CO2, O2, NOx, NO, NO2, SO2, HCl, CO and TOC concentrations in the flue gas were measured at 10-minute intervals by an ABB Advance Cemas FTIR NT continuous monitoring system with extra modules for O2 and TOC measurements (Figure 1, Table 1). NO constituted the main part of the NOx, while NO2 contributed only 3.4±1.4% of the total NO+NO2 (data not presented). The mean O2 concentration in the flue gas was 7.9±0.2%. In addition, license measurements on a series of heavy metals and dioxins in the flue gas were performed 2-4 times per year since the start of the power plant in 2010 (Table 1).

Bottom Line: Undiluted flue gas reduced the dry weight production by around 20-25% when grown at a photon flux density (PFD) of 300 μmol m(-2) s(-1) artificial light and at 24 or 33°C, compared with the other treatments.A less negative effect was found at the highest flue gas concentration when the algae were grown at 75 μmol m(-2) s(-1) PFD.It was concluded that the negative effect of the undiluted flue gas was attributable to the high CO2 concentration and not to the other pollutants.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Plant Science, The University of Life Sciences, Ås NO-1432, Norway.

ABSTRACT
Flue gases from a power plant based on waste combustion were tested as a carbon dioxide (CO2) source for growing Chlamydomonas reinhardtii. To achieve recognition as an environmentally friendly hydrogen production method, waste gases should be used to grow this hydrogen-producing microalgae. The algae were grown in undiluted flue gas containing 11.4±0.2% CO2 by volume, in diluted flue gas containing 6.7±0.1% or 2.5±0.0% CO2, and in pure liquid CO2 at a concentration of 2.7±0.2%. The NOx concentration was 45±16 mg m(-3), the SO2 concentration was 36±19 mg m(-3), the HCl concentration 4.1±1.0 mg m(-3) and the O2 concentration 7.9±0.2% in the undiluted flue gas. Undiluted flue gas reduced the dry weight production by around 20-25% when grown at a photon flux density (PFD) of 300 μmol m(-2) s(-1) artificial light and at 24 or 33°C, compared with the other treatments. A less negative effect was found at the highest flue gas concentration when the algae were grown at 75 μmol m(-2) s(-1) PFD. Growing the algae outdoors at a day length of 12.5 h and a temperature of around 24°C, the dry weight production was higher (about 15%) in the 2.6% CO2 flue gas treatment compared with all other treatments. Reducing the light level by 30% through shading did not affect the dry weight production. Calculated on aerial basis the productivity reached approximately 70 g m(-2) day(-1) in the 300 μmol m(-2) s(-1) PFD treatment (corresponding to 25 mol m(-2) day(-1)) and approximately 17 g m(-2) day(-1) in the 75μmol m(-2) s(-1) PFD treatment (corresponding to 6.5 mol m(-2) day(-1)). The outdoor production reached around 14 g m(-2) day(-1). It was concluded that the negative effect of the undiluted flue gas was attributable to the high CO2 concentration and not to the other pollutants.

No MeSH data available.


Related in: MedlinePlus