Carbon dioxide mitigation by microalga in a vertical tubular reactor with recycling of the culture medium | Zendy

Michele Greque de Morais | Zendy; Klasener da Silva Cleber | Zendy; Arruda Henrard Adriano | Zendy; Alberto Vieira Costa Jorge | Zendy

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Carbon dioxide mitigation by microalga in a vertical tubular reactor with recycling of the culture medium

Author(s) -

Michele Greque de Morais,

Klasener da Silva Cleber,

Arruda Henrard Adriano,

Alberto Vieira Costa Jorge

Publication year - 2015

Publication title -

african journal of microbiology research

Language(s) - English

Resource type - Journals

ISSN - 1996-0808

DOI - 10.5897/ajmr2015.7632

Subject(s) - photobioreactor , biomass (ecology) , carbon dioxide , carbon sequestration , carbon fibers , photosynthesis , environmental science , pulp and paper industry , productivity , carbon cycle , total inorganic carbon , environmental chemistry , environmental engineering , botany , chemistry , ecology , biology , ecosystem , materials science , engineering , macroeconomics , composite number , economics , composite material

Microalgae use photosynthesis as their principal metabolic mechanism to obtain organic carbon from the inorganic carbon contained in CO2 using solar energy. This process releases oxygen into the atmosphere. The aim of this study was to determine the most appropriate biomass concentration for growing Spirulina sp. LEB 18 (Cyanobacteria) in a vertical tubular photobioreactor with biomass removal and recycling of the medium to maximize CO2 biofixation. The maximum CO2 biofixation was obtained when the culture was maintained at 600 mg L-1 biomass concentration. Under this condition, the highest CO2 biofixation value was 186.8 ± 73.1 mg L-1 d-1, and the maximum productivity was 85.9 ± 6.0 mg L-1 d-1. Key words: Biofixation, carbon dioxide, microalgae, recycling, tubular photobioreactor.

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