News Column

Researchers from University College Dublin Report Recent Findings in Oxides

June 4, 2014

By a News Reporter-Staff News Editor at Biotech Week -- New research on Oxides is the subject of a report. According to news reporting originating in Dublin, Ireland, by NewsRx journalists, research stated, "Bio-fixation of carbon dioxide (CO2) by microalgae has been recognised as an attractive approach to offset anthropogenic emissions. Biological carbon mitigation is the process whereby autotrophic organisms, such as microalgae, convert CO2 into organic carbon and O-2 through photosynthesis; this process through respiration produces biomass."

The news reporters obtained a quote from the research from University College Dublin, "In this study Dunaliella tertiolecta was cultivated in a semicontinuous culture to investigate the carbon mitigation rate of the system. The algae were produced in 1.2-L Roux bottles with a working volume of 1 L while semicontinuous production commenced on day 4 of cultivation when the carbon mitigation rate was found to be at a maximum for D. tertiolecta. The reduction in CO2 between input and output gases was monitored to predict carbon fixation rates while biomass production and microalgal carbon content are used to calculate the actual carbon mitigation potential of D. tertiolecta. A renewal rate of 45 % of flask volume was utilised to maintain the culture in exponential growth with an average daily productivity of 0.07 g L-1 day(-1). The results showed that 0.74 g L-1 of biomass could be achieved after 7 days of semicontinuous production while a total carbon mitigation of 0.37 g L-1 was achieved."

According to the news reporters, the research concluded: "This represented an increase of 0.18 g L-1 in carbon mitigation rate compared to batch production of D. tertiolecta over the same cultivation period."

For more information on this research see: Carbon dioxide utilisation of Dunaliella tertiolecta for carbon bio-mitigation in a semicontinuous photobioreactor. Applied Microbiology and Biotechnology, 2014;98(7):3157-3164. Applied Microbiology and Biotechnology can be contacted at: Springer, 233 Spring St, New York, NY 10013, USA. (Springer -; Applied Microbiology and Biotechnology -

Our news correspondents report that additional information may be obtained by contacting D.J. Farrelly, University College Dublin, Sch Agr & Food Sci, Dublin 4, Ireland. Additional authors for this research include L. Brennan, C.D. Everard and K.P. McDonnell (see also Oxides).

Keywords for this news article include: Dublin, Europe, Ireland, Chemicals, Chemistry, Carbon Dioxide, Inorganic Carbon Compounds

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Source: Biotech Week

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