ChemInform Abstract: Limonene: A Versatile Chemical of the Bioeconomy

Ciriminna, Rosaria; Lomelí-Rodríguez, Mónica; Carà, Piera Demma; López-Sánchez, José Antonio; Pagliaro, Mario

doi:10.1002/chin.201505238

Cited by 9 publications

(34 citation statements)

References 1 publication

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“…The application of heat has been considered an effective method to improve the bioavailability of the lignocellulosic material of algal biomass as it increases the solubilization of particulate organic fractions thus allowing the partial hydrolysis of polymeric organic molecules (Rodriguez et al, 2015). Additionally, heat can also play an integral role in also disrupting the lignin and hemicellulose structures of algal biomass.…”

Section: Thermal Treatmentsmentioning

confidence: 99%

“…Additionally, heat can also play an integral role in also disrupting the lignin and hemicellulose structures of algal biomass. The heat actively interrupts the hydrogen bonds which are situated in the crystalline structure of cellulose and lignocellulose complexes which subsequently causes the algal biomass to swell (Rodriguez et al, 2015). Thermal pretreatments are very commonly used as they also provide a means for sanitization of the respective feedstock to remove any pathogens.…”

Section: Thermal Treatmentsmentioning

confidence: 99%

“…Distinguished from hydrothermal and steam-based thermal pre-treatments, thermal pretreatments of low temperature-are defined as those that are below 100 °C and under atmospheric pressure (Passoss et al, 2014;Rodriguez et al, 2015). With the requirement of low temperatures, this form of pre-treatment is advantageous because it requires a lower energy demand relative to high temperature pre-treatments.…”

Section: Thermal Pre-treatments Of Low Temperaturementioning

confidence: 99%

“…The mechanical pre-treatment of algal biomass involves the disruption of cell walls through active physical force. The purpose of mechanical pre-treatment methods is to reduce particle size and crystallinity (Rodriguez et al, 2015). Consequently, this renders possible an increase in the surface to volume ratio that can ultimately shorten and progress the solubilization process (Rodriguez et al, 2015).…”

Section: Mechanical Treatmentsmentioning

confidence: 99%

“…The purpose of mechanical pre-treatment methods is to reduce particle size and crystallinity (Rodriguez et al, 2015). Consequently, this renders possible an increase in the surface to volume ratio that can ultimately shorten and progress the solubilization process (Rodriguez et al, 2015). A variety of mechanical pre-treatment options have been used in literature and in the industry.…”

Section: Mechanical Treatmentsmentioning

confidence: 99%

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Enhancing Downstream Processing Of Algal-Based Biofuel Using Novel Fused Bacteria And Green Solvents

Fiayaz¹

2021

Preprint

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The present study investigated the utilization of algal biomass to produce bio-oil and acetone, butanol, and ethanol (ABE) products. Novel Clostridia fusants (C. beijernickii + C. thermocellum-CbCt and C. acetobutylicum + C. thermocellocum-CaCt) were developed using protoplast fusion technique and subsequently subjected to UV radiation for strain enhancement. Resultant mutated fusants showed improvement in thermal stability and higher resistance to biobutanol toxicity. Algal biomass was initially subjected to various hydrolysis treatments prior to fermentation. Combination treatment of thermal, chemical, and enzymatic resulted in maximum sugar release of 27.78 g/L. Maximum biobutanol concentration from fermentation using CbCt resulted in 7.98 g/L. Fermentation using CaCt produced a concentration of 7.39 g/L. Oil extraction from virgin algae investigated a green, bio-based approach using terpenes with ultrasonication and a modified, Bligh and Dyer method, separately. Combination method, ultrasonication followed by the modified Bligh and Dyer, resulted in oil yield of 46.27% (dlimonene) and 39.85% (p-cymene). Oil extraction was also produced from an algae sample following fermentation. Combined extraction method using fermentation sample resulted in oil yield of 65.04%.

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Section: Thermal Treatmentsmentioning

confidence: 99%

Section: Thermal Treatmentsmentioning

confidence: 99%

Section: Thermal Pre-treatments Of Low Temperaturementioning

confidence: 99%

Section: Mechanical Treatmentsmentioning

confidence: 99%

Section: Mechanical Treatmentsmentioning

confidence: 99%

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Enhancing Downstream Processing Of Algal-Based Biofuel Using Novel Fused Bacteria And Green Solvents

Fiayaz¹

2021

Preprint

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Limonene Enantiomeric Ratios from Anthropogenic and Biogenic Emission Sources

Gu,

Luo,

Charmchi

et al. 2024

Environ. Sci. Technol. Lett.

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Emissions from volatile chemical products (VCPs) have been identified as contributors to air quality degradation in urban areas. Limonene can be a tracer compound for VCPs containing fragrances in densely populated regions, but limonene is also emitted from conifers that are planted in urban areas. This creates challenges for using limonene to estimate VCP emissions. In this study, the −/+ enantiomeric ratios of limonene from VCP and conifer emission sources were quantified to evaluate if this measurement could be used to aid in source apportionment and emission inventory development. Samples were analyzed using a gas chromatograph equipped with a chiral column and mass spectrometry. The results demonstrate that limonene exhibits distinct enantiomeric ratios when sourced from VCPs versus conifers. (+)-Limonene was dominant in VCP sources (>97%), which was not universally true for conifer sources. The results were compared to those of air samples collected outside at two locations and indoors. The levels of (−)-limonene in outdoor air in Irvine and Portland and in indoor air were 50%, 22%, and 4%, respectively. This suggests outdoor limonene had both VCP and plant emission sources while indoor air was dominated by VCP sources. This study demonstrates the potential utility of enantiomeric analysis for improving VCP emission estimates in urban areas.

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Separation of Linalool from Limonene via Extractive Distillation with 1-Butyl-3-methylimidazolium Acetate as Entrainer

Ganem

Mattedi

Rodil

et al. 2020

Ind. Eng. Chem. Res.

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Orange processing generates a high amount of waste rich in natural compounds that can be used to obtain added-value products or as raw material in biorefineries. Limonene (terpene) and linalool (oxygenated terpene) stand out among those bioproducts due to their organoleptic, antioxidant, and preservative properties. They are widely used in the food, cosmetic, and chemical industries, but their use as generally recognized as safe solvents is also gaining interest. In this work, separation of a mixture of limonene and linalool is proposed by extractive distillation with the ionic liquid 1-butyl-3-methylimidazolium acetate. To that aim, isobaric vapor–liquid equilibrium at 5 kPa was determined for the binary and ternary systems involved, and the data were successfully correlated with the NRTL and UNIQUAC models. The process was simulated, and the recovery of the ionic liquid was tested with a flash unit at very low pressure (0.1 kPa) or a stripping column (5 stages, 101.32 kPa) with air at the maximum operating temperature and a gas–liquid separator (101.32 kPa, 298.15 K). In the second case, an extractive column with an entrainer flow rate of 100 kg/h, number of stages N = 20, and reflux ratio R = 0.5 allows the separation of practically pure limonene and linalool.

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ChemInform Abstract: Limonene: A Versatile Chemical of the Bioeconomy

Cited by 9 publications

References 1 publication

Enhancing Downstream Processing Of Algal-Based Biofuel Using Novel Fused Bacteria And Green Solvents

Enhancing Downstream Processing Of Algal-Based Biofuel Using Novel Fused Bacteria And Green Solvents

Limonene Enantiomeric Ratios from Anthropogenic and Biogenic Emission Sources

Separation of Linalool from Limonene via Extractive Distillation with 1-Butyl-3-methylimidazolium Acetate as Entrainer

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