Synechococcus nidulans from a thermoelectric coal power plant as a potential CO2 mitigation in culture medium containing flue gas wastes

Jessica Hartwig Duarte; Jorge Alberto Vieira Costa

doi:10.1016/j.biortech.2017.05.064

Synechococcus nidulans from a thermoelectric coal power plant as a potential CO₂ mitigation in culture medium containing flue gas wastes

Bioresour Technol. 2017 Oct:241:21-24. doi: 10.1016/j.biortech.2017.05.064. Epub 2017 May 13.

Authors

Jessica Hartwig Duarte¹, Jorge Alberto Vieira Costa²

Affiliations

¹ Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, Rio Grande, Brazil.
² Laboratory of Biochemical Engineering, College of Chemistry and Food Engineering, Federal University of Rio Grande, Rio Grande, Brazil. Electronic address: jorgealbertovc@terra.com.br.

PMID: 28549253
DOI: 10.1016/j.biortech.2017.05.064

Abstract

This study evaluated the intermittent addition of coal flue gas wastes (CO₂, SO₂, NO and ash) into a Synechococcus nidulans LEB 115 cultivation in terms of growth parameters, CO₂ biofixation and biomass characterization. The microalga from a coal thermoelectric plant showed tolerance up to 200ppm SO₂ and NO, with a maximum specific growth rate of 0.18±0.03d^-¹. The addition of thermal coal ash to the cultivation increased the Synechococcus nidulans LEB 115 maximum cell growth by approximately 1.3 times. The best CO₂ biofixation efficiency was obtained with 10% CO₂, 60ppm SO₂, 100ppm NO and 40ppm ash (55.0±3.1%). The biomass compositions in the assays were similar, with approximately 9.8% carbohydrates, 13.5% lipids and 62.7% proteins.

Keywords: Biofixation; Biomass composition; Cyanobacteria; Flue gas; Global warming.

MeSH terms

Air Pollution / prevention & control
Biomass
Carbon Dioxide*
Coal
Power Plants*
Synechococcus*

Substances

Coal
Carbon Dioxide