CO2capture using limestone for cultivation of the freshwater microalga Chlorella sorokiniana PAZ and the cyanobacterium Arthrospira sp. VSJ.
The present study reports a process wherein CO2is captured in the form of bicarbonates using calcium oxide and photosynthetically fixed into biomass. Microalgal cultures viz. Chlorella sorokiniana PAZ and Arthrospira sp. VSJ were grown in the medium containing bicarbonates. The rate of bicarbonate utilization by C. sorokiniana PAZ was higher when CO2trapped in the presence of 2.67mM calcium oxide than in the presence of 10mM sodium hydroxide and with direct addition of 10mM sodium bicarbonate. For Arthrospira sp. VSJ the bicarbonate utilization was 92.37%, 88.34% and 59.23% for the medium containing CaO, NaOH and NaHCO3, respectively. Illumination of photosynthetically active radiation (PAR)+ultraviolet A radiation (UVA) enhanced the yield of C. sorokiniana PAZ and Arthrospira sp. VSJ by 1.3 and 1.8 folds, respectively. FTIR analysis revealed elevation in the biosynthesis of specific metabolites in response to the UVA exposure.
School of Life Sciences, North Maharashtra University, P.O. Box No. 80, Umavinagar, Jalgaon 425001, Maharashtra, India; Department of Microbiology and Molecular Genetics, Henry Bellmon Research Center, Oklahoma State University, Stillwater, OK 74078, USA.
Prachi
P
Zawar
School of Life Sciences, North Maharashtra University, P.O. Box No. 80, Umavinagar, Jalgaon 425001, Maharashtra, India.
Vivek
V
Javalkote
Department of Microbiology and Molecular Genetics, Henry Bellmon Research Center, Oklahoma State University, Stillwater, OK 74078, USA.
Robert
R
Burnap
School of Chemical Sciences, North Maharashtra University, P.O. Box No. 80, Umavinagar, Jalgaon 425001, Maharashtra, India.
Pramod
P
Mahulikar
School of Life Sciences, North Maharashtra University, P.O. Box No. 80, Umavinagar, Jalgaon 425001, Maharashtra, India. Electronic address: prpuranik@rediffmail.com.
Pravin
P
Puranik
D001639:Bicarbonates / Q000378:metabolism; D018533:Biomass; D002119:Calcium Carbonate / Q000378:metabolism*; D002245:Carbon Dioxide / Q000378:metabolism*; D002708:Chlorella / Q000378:metabolism*; D005618:Fresh Water / Q000382:microbiology; D008027:Light; D058086:Microalgae / Q000378:metabolism; D010788:Photosynthesis; D053545:Spirulina / Q000378:metabolism*
D001639:Bicarbonates; D002245:Carbon Dioxide; D002119:Calcium Carbonate
Bicarbonate; CO(2) sequestration; Calcium oxide; Cyanobacteria; Microalgae; UVA