Enhancement in lipid content of Chlorella sp. MJ 11/11 from the spent medium of thermophilic biohydrogen production process

Supratim Ghosh; Shantonu Roy; Debabrata Das

doi:10.1016/j.biortech.2016.10.016

Enhancement in lipid content of Chlorella sp. MJ 11/11 from the spent medium of thermophilic biohydrogen production process

Supratim Ghosh, Shantonu Roy, Debabrata Das^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The present study investigates the effect of spent media of acetogenic dark fermentation for mixotrophic algal cultivation for biodiesel production. Mixotrophic growth conditions were optimized in culture flask (250 mL) using Chlorella sp. MJ 11/11. Maximum lipid accumulation (58% w/w) was observed under light intensity, pH, nitrate and phosphate concentration of 100 μmol m⁻² s⁻¹, 7, 2.7 mM and 1.8 mM, respectively. Air lift (1.4 L) and flat panel (1.4 L) reactors were considered for algal cultivation. Air lift showed significant improvement in biomass and lipid production as compared to flat panel reactor. The results could help in development of sustainable technology involving acetogenic hydrogen production integrated with sequential mitigation of spent media by algal cultivation for improved energy recovery.

Original language	English
Pages (from-to)	219-226
Number of pages	8
Journal	Bioresource Technology
Volume	223
DOIs	https://doi.org/10.1016/j.biortech.2016.10.016
State	Published - 1 Jan 2017
Externally published	Yes

Keywords

Biodiesel
Chlorella sp.
Lipid content
Mixotrophic growth
Spent media

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2016.10.016

Cite this

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title = "Enhancement in lipid content of Chlorella sp. MJ 11/11 from the spent medium of thermophilic biohydrogen production process",

abstract = "The present study investigates the effect of spent media of acetogenic dark fermentation for mixotrophic algal cultivation for biodiesel production. Mixotrophic growth conditions were optimized in culture flask (250 mL) using Chlorella sp. MJ 11/11. Maximum lipid accumulation (58% w/w) was observed under light intensity, pH, nitrate and phosphate concentration of 100 μmol m−2 s−1, 7, 2.7 mM and 1.8 mM, respectively. Air lift (1.4 L) and flat panel (1.4 L) reactors were considered for algal cultivation. Air lift showed significant improvement in biomass and lipid production as compared to flat panel reactor. The results could help in development of sustainable technology involving acetogenic hydrogen production integrated with sequential mitigation of spent media by algal cultivation for improved energy recovery.",

keywords = "Biodiesel, Chlorella sp., Lipid content, Mixotrophic growth, Spent media",

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AU - Roy, Shantonu

AU - Das, Debabrata

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Y1 - 2017/1/1

N2 - The present study investigates the effect of spent media of acetogenic dark fermentation for mixotrophic algal cultivation for biodiesel production. Mixotrophic growth conditions were optimized in culture flask (250 mL) using Chlorella sp. MJ 11/11. Maximum lipid accumulation (58% w/w) was observed under light intensity, pH, nitrate and phosphate concentration of 100 μmol m−2 s−1, 7, 2.7 mM and 1.8 mM, respectively. Air lift (1.4 L) and flat panel (1.4 L) reactors were considered for algal cultivation. Air lift showed significant improvement in biomass and lipid production as compared to flat panel reactor. The results could help in development of sustainable technology involving acetogenic hydrogen production integrated with sequential mitigation of spent media by algal cultivation for improved energy recovery.

AB - The present study investigates the effect of spent media of acetogenic dark fermentation for mixotrophic algal cultivation for biodiesel production. Mixotrophic growth conditions were optimized in culture flask (250 mL) using Chlorella sp. MJ 11/11. Maximum lipid accumulation (58% w/w) was observed under light intensity, pH, nitrate and phosphate concentration of 100 μmol m−2 s−1, 7, 2.7 mM and 1.8 mM, respectively. Air lift (1.4 L) and flat panel (1.4 L) reactors were considered for algal cultivation. Air lift showed significant improvement in biomass and lipid production as compared to flat panel reactor. The results could help in development of sustainable technology involving acetogenic hydrogen production integrated with sequential mitigation of spent media by algal cultivation for improved energy recovery.

KW - Biodiesel

KW - Chlorella sp.

KW - Lipid content

KW - Mixotrophic growth

KW - Spent media

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Enhancement in lipid content of Chlorella sp. MJ 11/11 from the spent medium of thermophilic biohydrogen production process

Abstract

Keywords

UN SDGs

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