Supercritical fluid extraction (SFE) as an effective tool in reducing auto-oxidation of dried pine sawdust for power generation

Arshadi, Mehrdad; Hunt, Andrew J.; Clark, James H.

doi:10.1039/c1ra00715g

Cited by 24 publications

(19 citation statements)

References 16 publications

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“…Supercritical CO 2 extraction (scCO 2 ) has been conducted on a commercial scale for over two decades for the extraction of high-value products from biomass [118]. Supercritical extraction process has been shown to improve the off-gassing of wood pellets, thus reducing the potential for uncontrolled auto-oxidation, while maintaining pellet properties [107,119]. Moreover, supercritical CO 2 extraction can also improve the physicochemical properties of solid char from pyrolysis at high temperatures, leading to greater electric conductivity and low reactivity of charcoal [120].…”

Section: Extractionmentioning

confidence: 99%

Charcoal as an Alternative Reductant in Ferroalloy Production: A Review

2020

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This paper provides a fundamental and critical review of biomass application as renewable reductant in integrated ferroalloy reduction process. The basis for the review is based on the current process and product quality requirement that bio-based reductants must fulfill. The characteristics of different feedstocks and suitable pre-treatment and post-treatment technologies for their upgrading are evaluated. The existing literature concerning biomass application in ferroalloy industries is reviewed to fill out the research gaps related to charcoal properties provided by current production technologies and the integration of renewable reductants in the existing industrial infrastructure. This review also provides insights and recommendations to the unresolved challenges related to the charcoal process economics. Several possibilities to integrate the production of bio-based reductants with bio-refineries to lower the cost and increase the total efficiency are given. A comparison of challenges related to energy efficient charcoal production and formation of emissions in classical kiln technologies are discussed to underline the potential of bio-based reductant usage in ferroalloy reduction process.

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Section: Extractionmentioning

confidence: 99%

Charcoal as an Alternative Reductant in Ferroalloy Production: A Review

2020

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“…31 The optimisation was carried out on leaves due to the high wax yields in this part of the plant. 31 The optimisation was carried out on leaves due to the high wax yields in this part of the plant.…”

Section: Supercritical Extraction Of Epicuticular Waxes From Plant Sumentioning

confidence: 99%

Supercritical extraction as an effective first-step in a maize stover biorefinery

Theeuwes²,

Gomez

et al. 2015

RSC Adv.

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Supercritical carbon dioxide (scCO 2 ) has been investigated for the generation of valuable waxy compounds and as an added-value technology in a holistic maize stover biorefinery. ScCO 2 extraction and fractionation was carried out prior to hydrolysis and fermentation of maize stover. Fractionation of the crude extracts by scCO 2 resulted in wax extracts having different compositions and melting temperatures, enabling their utilisation in different applications. One such fraction demonstrated significant potential as a renewable defoaming agent in washing machine detergent formulations. Furthermore, scCO 2 extraction has been shown to have a positive effect on the downstream processing of the maize stover. Fermentation of the scCO 2 extracted maize stover hydrolysates exhibited a higher glucose consumption and greater potential growth for surfactant (in comparison with non-scCO 2 treated stover) and ethanol production (a 40% increase in overall ethanol production after scCO 2 pre-treatment). This work represents an important development in the extraction of high value components from low value wastes and demonstrates the benefits of using scCO 2 extraction as a first-step in biomass processing, including enhancing downstream processing of the biomass for the production of 2 nd generation biofuels as part of an integrated holistic biorefinery.

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“…The extraction of waxes from biomass using supercritical carbon dioxide has been previously carried out [28,[32][33][34][35]. Supercritical carbon dioxide was found to be an ideal solvent for the extraction of plant lipids.…”

Section: Lignocellulosic Biomassmentioning

confidence: 99%