CO2 conversion by the integration of biological and chemical methods: Spirulina sp. LEB 18 cultivation with diethanolamine and potassium carbonate addition

Bioresource Technology
Bruna Barcelos CardiasJorge Alberto Vieira Costa

Abstract

The aim of this work was to evaluate if the addition of the chemical absorbents diethanolamine and potassium carbonate affects the CO2 biofixation, growth and biomass composition of Spirulina sp. LEB 18. The association of the diethanolamine (DEA) and potassium carbonate (K2CO3) absorbents increased the dissolved inorganic carbon concentration in the cultivation medium, allowing greater CO2 biofixation by the Spirulina. Higher biomass concentration (2.1 g L-1) and maximum productivity (174.2 mg L-1 d-1) were observed with the mixture of 1.64 mmol L-1 of DEA and 0.41 mmol L-1 of K2CO3. In this cultivation condition, Spirulina sp. LEB 18 showed high protein content (58.8 w w-1) and an increased carbohydrate concentration (23.7% w w-1). The addition of these absorbent concentrations may be applied in the cultivation of Spirulina sp. LEB 18 to increase CO2 biofixation and cell growth.

Citations

May 16, 2019·World Journal of Microbiology & Biotechnology·Michele Greque de MoraisJorge Alberto Vieira Costa
May 12, 2019·Bioprocess and Biosystems Engineering·Hogi KimYong Keun Chang
Jul 19, 2019·Bioresource Technology·Chunfeng SongYutaka Kitamura
Nov 28, 2018·Bioresource Technology·Bruna da Silva VazMichele Greque de Morais
Jan 20, 2021·Trends in Plant Science·Yoong Kit LeongPau Loke Show
May 5, 2021·Biotechnology for Biofuels·Harshita NigamVikram Singh
Jul 16, 2021·Environmental Pollution·Hooi Ren LimPau Loke Show

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