title: A growth inhibitory model with SO(x) influenced effective growth rate for estimation of algal biomass concentration under flue gas atmosphere.
abstract: A theoretical model for the prediction of biomass concentration under rice husk flue gas emission has been developed. The growth inhibitory model (GIM) considers the CO2 mass transfer rate, the critical SOx concentration and its role in pH-based inter-conversion of bicarbonate. The calibration and subsequent validation of the growth profile of Nannochloropsis limnetica at 2% and 10% (v/v) CO2 showed that the predicted values were consistent with the measured values, with r(2) being 0.96 and 0.98, respectively, and p<0.001 in both cases. The constants used in the GIM for the prediction of biomass have been justified using sensitivity analysis. GIM applicability was defined as ±30% of the calibrated flow rate (3.0 L min(-1)). This growth model can be applied to predict algal growth in photo-bioreactors treated with flue gas in the generation of biomass feed stock for biofuel production.
authors.affiliation: Department of Biotechnology, KL University, Vaddeswaram, Guntur District, AP, India. Electronic address: rsr@kluniversity.in.
authors.forename: Srinivasa Reddy
authors.initials: SR
authors.lastname: Ronda
authors.affiliation: Department of Biotechnology, KL University, Vaddeswaram, Guntur District, AP, India.
authors.forename: Chandrika
authors.initials: C
authors.lastname: Kethineni
authors.affiliation: Department of Biotechnology, KL University, Vaddeswaram, Guntur District, AP, India.
authors.forename: Lakshmi Chandrika Pavani
authors.initials: LC
authors.lastname: Parupudi
authors.affiliation: Department of Biotechnology, KL University, Vaddeswaram, Guntur District, AP, India.
authors.forename: Venkata Bala Sai Chaitanya
authors.initials: VB
authors.lastname: Thunuguntla
authors.affiliation: Department of Biotechnology, KL University, Vaddeswaram, Guntur District, AP, India.
authors.forename: Sandeep
authors.initials: S
authors.lastname: Vemula
authors.affiliation: Department of Biotechnology, KL University, Vaddeswaram, Guntur District, AP, India.
authors.forename: Vijaya Saradhi
authors.initials: VS
authors.lastname: Settaluri
authors.affiliation: Department of Biotechnology, KL University, Vaddeswaram, Guntur District, AP, India.
authors.forename: Prasada Rao
authors.initials: PR
authors.lastname: Allu
authors.affiliation: Department of Mathematics, KL University, Vaddeswaram, Guntur District, AP, India.
authors.forename: Suresh Kumar
authors.initials: SK
authors.lastname: Grande
authors.affiliation: Department of Textiles, Merchandising and Interiors, University of Georgia, Athens, USA.
authors.forename: Suraj
authors.initials: S
authors.lastname: Sharma
authors.affiliation: National Peanut Research Laboratory, United States Department of Agriculture, Dawson, GA, USA.
authors.forename: Chari Venkatakrishna
authors.initials: CV
authors.lastname: Kandala
mesh_terms: D001272:Atmosphere / Q000737:chemistry*; D018533:Biomass; D002138:Calibration; D002245:Carbon Dioxide / Q000494:pharmacology; D005740:Gases / Q000494:pharmacology*; D006863:Hydrogen-Ion Concentration / Q000187:drug effects; D058086:Microalgae / Q000187:drug effects / Q000254:growth & development*; D008962:Models, Theoretical; D015203:Reproducibility of Results; D012212:Rheology / Q000187:drug effects; D013431:Sulfates / Q000494:pharmacology*; D013447:Sulfites / Q000494:pharmacology*
chemical_list: D005740:Gases; D013431:Sulfates; D013447:Sulfites; D002245:Carbon Dioxide
keywords: Biomass; Flow rate; Flue gas; Microalgae; Modeling