Fatty acid profile and energy efficiency of biodiesel production from an alkaliphilic algae grown in the photobioreactor

Chowdhury, Raja; Keen, Patricia L.; Tao, Wendong

doi:10.1016/j.biteb.2019.03.010

Cited by 23 publications

(16 citation statements)

References 45 publications

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“…In general, when nitrogen is supplied as nitrate, conversion of nitrate to ammonium consumes a considerable amount of energy as compared to the uptake of ammonium [10]. Hence, uptake of nitrogen as nitrate is energy intensive and may reduce algal growth.…”

Section: Sorokiniana Biomass Productivitymentioning

confidence: 99%

“…Several other studies have also been conducted on lipid production using various species of algae [10,48,49,50,51,52]. Some of these studies showed very high biomass productivity and lipid content, whereas some studies showed either low biomass productivity or low lipid content [10,48,49].…”

Section: Effects Of Different Parameters On C Sorokiniana Lipid Productivity and Fame Compositionmentioning

confidence: 99%

“…However, nutrient contents also play a vital role in the production of value-added products. Chowdhury and his co-workers [8][9][10] showed that nutrient recovery from biomass and its utilisation along with waste nutrients increased biofuel production considerably. Produced biofuel has reduced energy demand and GHG emission.…”

Section: Introductionmentioning

confidence: 99%

“…were retrieved using hexane. The hexane phase was then transferred to a glass vial for Gas Chromatography (Shimadzu GC-2014) equipped with a flame ionization detector (FID) [10].…”

mentioning

confidence: 99%

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Biomass and Lipid Productivity by Two Algal Strains of <em>Chlorella Sorokiniana</em> Grown in Hydrolysate of Water Hyacinth

Dahiya¹,

Chowdhury²,

Tao³

et al. 2021

Preprint

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Hydrolysate prepared from water hyacinth biomass, containing a considerable amount of solubilised carbohydrate and nutrients, was utilised as a medium for the cultivation of two strains of Chlorella sorokiniana. These strains were isolated from an oxidation pond using two different media, i.e., BG-11 and Knop's media maintained at pH-9. Different light intensities, light-dark cycles, and various concentrations of external carbon sources (monosaccharides and inorganic carbon) were used to optimise the microalgal growth. It was observed that in the presence of organic carbon (glucose), biomass productivity increased significantly (~300 mgL-1day-1) as compared to that in the presence of only inorganic carbon (~100 mgL-1day-1). For the accumulation of stress products (lipids and carbohydrates), the microalgal strains were transferred to nutrient-amended media (N-amended and P-amended). The combined effects of glucose, inorganic carbon, and a 12h:12h light-dark cycle proved to be optimum for biomass productivity. For Chlorella sp. isolated from BG-11, maximum carbohydrate content (22%) was found in the P-amended medium, whereas high lipid content (17.3%) was estimated in the N-amended medium. However, for Chlorella sp. isolated from Knop's medium, both the lipid (17%) and carbohydrate accumulation (12.3%) were found maximum in the N- amended medium. Kinetic modelling of the lipid profile revealed that kinetic coefficients obtained for strain isolated from BG-11 media were statistically significant from each other.

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Section: Sorokiniana Biomass Productivitymentioning

confidence: 99%

Section: Effects Of Different Parameters On C Sorokiniana Lipid Productivity and Fame Compositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…were retrieved using hexane. The hexane phase was then transferred to a glass vial for Gas Chromatography (Shimadzu GC-2014) equipped with a flame ionization detector (FID) [10].…”

mentioning

confidence: 99%

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Biomass and Lipid Productivity by Two Algal Strains of <em>Chlorella Sorokiniana</em> Grown in Hydrolysate of Water Hyacinth

Dahiya¹,

Chowdhury²,

Tao³

et al. 2021

Preprint

Self Cite

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“…A substantial increase (~12%) in mono-unsaturated fatty acids (MUFAs) and decrease (~4%) in polyunsaturated fatty acids (PUFA) were recorded in microalga grown in microwave-assisted hydrolysate as compared with BBM. The first fatty acid to be synthesized by microalga via de novo fatty acid synthesis is C16:0, which then serves as a precursor for higher chain and unsaturated/saturated fatty acids [32]. Furthermore, microalgae synthesize mostly cis-isomers fatty acids which are present mostly in the phospholipids and maintain the membrane fluidity [32].…”

Section: Fatty Acid Profile and Biodiesel Properties Of Microalgal And Yeast Cultivated In Hab Hydrolysatesmentioning

confidence: 99%

Microwave-assisted pretreatment of harmful algal blooms for microbial oil-centered biorefinery approach

Kumar

Arora

Pandey

et al. 2020

Biomass Conv. Bioref.

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Utilization of harmful algal blooms (HABs) for the cultivation of oleaginous microorganisms can provide dual benefits of mitigating the toxicity from the aquatic reservoirs and generation of copious media for biodiesel production. In the present investigation, microwave-assisted dilute alkali-freeze pretreatment was optimized to develop a low-cost growth medium from HAB dried biomass. The electron micrographs along with the elemental analysis confirmed the efficient breakage of HABs after the microwave-assisted hydrolysis treatment as compared with the acid hydrolysis. Moreover, the sugar analysis revealed~46% higher carbohydrate content in microwave-assisted hydrolysate as compared with acid hydrolysate. The microwave-assisted hydrolysate and conventional dilute acid hydrolysate were then used to cultivate microalga (Chlorella minutissima) and yeast (Trichosporon cutaneum) for biomass and lipid accumulation and compared to artificial media. Microalga showed~1.3-and 2fold higher dry cell weight (DCW) and lipid content, respectively, while the yeast growth increased by~27% with lipid content of 30%. The fatty acid profiles and biodiesel properties were also amenable to the international biodiesel standards. Hence, the present study provides a proof-of-concept of utilizing HAB hydrolysate for culturing oleaginous microorganisms for potential biodiesel production.

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Algal Oil as a Low‐Cost Feedstock for Biodiesel Production

Chhandama¹,

Satyan²,

Rokhum³

2022

Biodiesel Production

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Fatty acid profile and energy efficiency of biodiesel production from an alkaliphilic algae grown in the photobioreactor

Cited by 23 publications

References 45 publications

Biomass and Lipid Productivity by Two Algal Strains of <em>Chlorella Sorokiniana</em> Grown in Hydrolysate of Water Hyacinth

Biomass and Lipid Productivity by Two Algal Strains of <em>Chlorella Sorokiniana</em> Grown in Hydrolysate of Water Hyacinth

Microwave-assisted pretreatment of harmful algal blooms for microbial oil-centered biorefinery approach

Algal Oil as a Low‐Cost Feedstock for Biodiesel Production

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