Opportunities for switchable solvents for lipid extraction from wet algal biomass: An energy evaluation

Du, Yukou; Schuur, Boelo; Kersten, Sascha R.A.; Brilman, Wim

doi:10.1016/j.algal.2015.07.004

Cited by 88 publications

(40 citation statements)

References 60 publications

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“…Life cycle assessment by Du et al . showed that scCO 2 extraction of wet algae might be less energy demanding than hexane extraction on either dry or wet algae …”

Section: Lipid Extractionmentioning

confidence: 99%

“…Wang and colleagues estimated the relative environmental impact of CXL extraction compared to methods such as chloroform/methanol, dichloromethane/methanol, ethanol/cyclohexane and scCO 2 extraction given the data available in the literature when extracting dry microalgae . Extractions using CO 2 ‐expanded methanol and CO 2 ‐expanded ethanol had the least environmental impact of the methods studied with respect to energy consumption, carbon footprint, and environmental toxicity when extracting lipids from a dry microalgal species . Moreover, another LCA conducted by Collotta et al .…”

Section: Lipid Extractionmentioning

confidence: 99%

“…Life cycle assessment by Du et al showed that scCO 2 extraction of wet algae might be less energy demanding than hexane extraction on either dry or wet algae. 63 Although scCO 2 avoids the use of environmentally damaging organic solvents and can be removed more easily compared to conventional organic solvent and co-solvent extraction, it still requires high capital cost to build and operate equipment for high-pressure conditions. Before this extraction technique can be implemented at a commercial scale, the use of such high pressures needs to be eliminated.…”

Section: Conventional Organic Solvent Extractionmentioning

confidence: 99%

“…66 Extractions using CO 2 -expanded methanol and CO 2 -expanded ethanol had the least environmental impact of the methods studied with respect to energy consumption, carbon footprint, and environmental toxicity when extracting lipids from a dry microalgal species. 63 Moreover, another LCA conducted by Collotta et al compared the extraction of a dry microalgae using a conventional solvent-based extraction system (chloroform:methanol), a nonexpanded methanol in a flow-through reactor and CO 2 -expanded methanol (CXM) in a flow-through reactor. 67 The CXM demonstrated the lowest environmental impact in all categories environmental impact associated with organic solvents.…”

Section: Conventional Organic Solvent Extractionmentioning

confidence: 99%

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Advances in microalgal lipid extraction for biofuel production: a review

Harris

Viner

Champagne

et al. 2018

Biofuels Bioprod Bioref

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Algal biomass is an attractive feedstock for sustainable biofuel production because of its high growth rate and the fact that it does not compete with food crops. This review examines progress made in the processing and extraction of microalgal lipids as feedstocks for algae‐derived biofuels. The discussion focuses on lipid extraction processes but also mentions drying, cell disruption, and transesterification processes because of their potential effect on the extraction process, and because of the possibility of performing them simultaneously with extraction. Some of the common themes discussed include the benefits of utilizing wet microalgal biomass, combining process steps (process intensification), and the importance of considering the entire life cycle when assessing the ‘greenness’ of a technology. Lipid extraction technologies will need to be improved for microalgal biofuels to compete effectively with fossil fuels, particularly through the development of energy‐efficient extraction methods and the adaptation of these methods for large‐scale production. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd

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“…Life cycle assessment by Du et al . showed that scCO 2 extraction of wet algae might be less energy demanding than hexane extraction on either dry or wet algae …”

Section: Lipid Extractionmentioning

confidence: 99%

Section: Lipid Extractionmentioning

confidence: 99%

Section: Conventional Organic Solvent Extractionmentioning

confidence: 99%

Section: Conventional Organic Solvent Extractionmentioning

confidence: 99%

See 2 more Smart Citations

Advances in microalgal lipid extraction for biofuel production: a review

Harris

Viner

Champagne

et al. 2018

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

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“…[49][50][51] Several pilot scale studies and energy evaluation have been conducted to assess the performance of CO 2 -based extractions. 50,51 Compared to organic solvent extractions, scCO 2 has shown higher efficiency and selectivity towards triglycerides avoiding the 20 Chapter 2 solubility of undesired components such as pigments or polar lipids. 49 The purification of biodiesel is an excellent example of the simplicity of CO 2 -based processes; where, in a single injection step, biodiesel as pure as what is obtained by conventional purification was obtained but with much lower waste generation.…”

Section: Physical Processes Employing High-pressure Co 2 or Co 2 -H 2mentioning

confidence: 99%

Introduction to High Pressure CO2 and H2O Technologies in Sustainable Biomass Processing

Questell‐Santiago

Luterbacher

2017

High Pressure Technologies in Biomass Conversion

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Biomass is an attractive source of renewable carbon-based fuels and chemicals and their production is envisaged within the framework of integrated biorefineries. Multiple research efforts to make biorefineries more economically competitive and sustainable are ongoing. In this context the use of high-pressure CO2 and CO2/H2O mixtures for biomass conversion is especially attractive. These mixtures are cheap, renewable, environmentally benign and allow tuning of various processing parameters by varying temperature, pressure and CO2 loading. This chapter presents a broad introduction of the principal processes and conversion routes being considered within biorefineries, and how high-pressure CO2 and CO2/H2O mixtures could help address certain challenges associated with biomass conversion. Some of the principle advantages associated with high-pressure CO2 and CO2/H2O mixtures that we highlight here are their abilities to act as green substitutes for unsustainable solvents, to enhance acid-catalysed reaction rates by in situ carbonic acid formation, to reduce mass transfer-limitations, and to increase access to substrates and catalysts. We discuss these advantages in the context of the trade-offs associated with implementing large-scale high-pressure systems including safety concerns and increased capital costs. With this introduction, we highlight both the principal benefits and challenges associated with the use of high-pressure CO2 and CO2/H2O mixtures, which are further detailed in subsequent chapters.

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Extraction of phospholipids from beta‐serum using switchable solvents and solid‐phase extraction

Rathnakumar

Ortega‐Anaya

Jiménez-Flores

et al. 2023

J Americ Oil Chem Soc

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We report the extraction of milk phospholipids (MPLs) from beta‐serum with a tertiary amine (N‐N dimethylcyclohexylamine, CyNMe2). The extraction time (3, 10, and 18 h), temperature (25, 40, and 60°C), and sample‐to‐solvent ratio (1/3, 1/10, and 1/18 v/v) were evaluated according to a factorial design. The extracted lipids were fractionated with solid‐phase extraction and quantified by HPLC‐CAD. Extraction conducted at 60°C yielded values of 14.86 ± 2.95%, 69.79 ± 3.19%, 79.39 ± 5.55% after 3, 10, and 18 h and a ratio of 1/18 (w/w). Microstructure images showed significant damage to the solid matrix that released the inner MPLs into the aqueous medium. The highest extraction yields of MPLs (79.39 ± 5.55%) were obtained after 18 h of extraction at 60°C and a sample‐to‐solvent ratio of 18 (w/w). The recovered fraction was made of phosphatidylinositol (~41%), phosphatidylserine (~6%), phosphatidylethanolamine (~34%), phosphatidylcholine (~9%), and sphingomyelin (~8%). This work outlines different extraction conditions for recovering MPLs from beta‐serum, a dairy byproduct.

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Opportunities for switchable solvents for lipid extraction from wet algal biomass: An energy evaluation

Cited by 88 publications

References 60 publications

Advances in microalgal lipid extraction for biofuel production: a review

Advances in microalgal lipid extraction for biofuel production: a review

Introduction to High Pressure CO2 and H2O Technologies in Sustainable Biomass Processing

Extraction of phospholipids from beta‐serum using switchable solvents and solid‐phase extraction

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