- Title
- Sustainable production of biomass and biodiesel by acclimation of non-acidophilic microalgae to acidic conditions
- Creator
- Abinandan, Sudharsanam; Subashchandrabose, Suresh R.; Cole, Nicole; Dharmarajan, Rajarathnam; Venkateswarlu, Kadiyala; Mallavarapu, Mallavarapu
- Relation
- Bioresource Technology Vol. 271, Issue January 2019, p. 316-324
- Publisher Link
- http://dx.doi.org/10.1016/j.biortech.2018.09.140
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2019
- Description
- The overwhelming response towards algal biodiesel production has been well-recognized recently as a sustainable alternative to conventional fuels. Most microalgae cannot grow well at acidic pH. The present study, therefore, investigated whether non-acidophilic microalgae Desmodesmus sp. MAS1 and Heterochlorella sp. MAS3 can be acclimated to extreme-acidic pH for sustainable production of biomass and biodiesel. Growth analysis indicated that both the microalgal strains possessed a passive uptake of CO2 at pH 3.0 with biomass production of 0.25 g dry wt. L−1 in Desmodemus sp. and 0.45 g dry wt. L−1 in Heterochlorella sp.. Flow-cytometry analysis for reactive oxygen species, membrane permeability and neutral-lipids revealed the capabilities of both strains to adapt to the stress imposed by acidic pH. Lipid production was doubled in both the strains when grown at pH 3.0. In-situ transesterification of biomass resulted in 13–15% FAME yield in the selected microalgae, indicating their great potential in biofuel production.
- Subject
- microalgae; non-acidophiles; acclimation; biochemical response; lipids; biodiesel
- Identifier
- http://hdl.handle.net/1959.13/1417073
- Identifier
- uon:37159
- Identifier
- ISSN:0960-8524
- Language
- eng
- Full Text
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