CO conversion by the integration of biological and chemical methods: Spirulina sp. LEB 18 cultivation with diethanolamine and potassium carbonate addition.

Author(s) Cardias, B.Barcelos; de Morais, M.Greque; Costa, J.Alberto Vi
Journal Bioresour Technol
Date Published 2018 Nov
Abstract

The aim of this work was to evaluate if the addition of the chemical absorbents diethanolamine and potassium carbonate affects the CO biofixation, growth and biomass composition of Spirulina sp. LEB 18. The association of the diethanolamine (DEA) and potassium carbonate (KCO) absorbents increased the dissolved inorganic carbon concentration in the cultivation medium, allowing greater CO biofixation by the Spirulina. Higher biomass concentration (2.1 g L) and maximum productivity (174.2 mg L d) were observed with the mixture of 1.64 mmol L of DEA and 0.41 mmol L of KCO. In this cultivation condition, Spirulina sp. LEB 18 showed high protein content (58.8 w w) and an increased carbohydrate concentration (23.7% w w). The addition of these absorbent concentrations may be applied in the cultivation of Spirulina sp. LEB 18 to increase CO biofixation and cell growth.

DOI 10.1016/j.biortech.2018.07.031
Keywords Biomass; Carbon Dioxide; Carbonates; Ethanolamines; Potassium; Spirulina
ISSN 1873-2976
Citation Bioresour Technol. 2018;267:7783.

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