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	Provedor de dados Organic Eprints (5) Autor Alexandridis, Paschalis (5) Ghasemi, Mohammad (5) Tsianou, Marina (5) Vargas-Aponte, Luz V. (2) Palavra-chave "Organics" in general (5) Environmental aspects (5) Research communication and quality (5) Tipo do documento Conference paper, poster, etc. (3) Journal paper (2) Ano 2018 (2) 2017 (3) País Germany (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Dissolution of cellulosic particles: Population ensemble modeling informs efficient woody biomass processing Organic Eprints Ghasemi, Mohammad; Tsianou, Marina; Alexandridis, Paschalis. A major barrier to the efficient utilization of biomass is the recalcitrance to dissolution of semicrystalline cellulose. The present study addresses the kinetics of swelling and dissolution of cellulose particles in conditions emulating large-scale processing where the particles exhibit a distribution of size and degree of crystallinity. To this end, we have developed a model in which the behavior of a population of particles is obtained from an ensemble of individual cellulose particle dissolution models. The dissolution of individual solid cellulose particles is based on the relevant transport phenomena and kinetics and reveals decrystallization and disentanglement as two important and potentially rate-determinant steps in the process [1]. The average... Tipo: Conference paper, poster, etc. Palavras-chave: "Organics" in general; Research communication and quality; Environmental aspects. Ano: 2017 URL: http://orgprints.org/33556/1/2017%20AIChE%20Annual%20Meeting_5000782.pdf Cellulose pretreatment and dissolution: Selection of solvent and processing conditions Organic Eprints Ghasemi, Mohammad; Vargas-Aponte, Luz V.; Tsianou, Marina; Alexandridis, Paschalis. Efficient utilization of biomass is hindered by the recalcitrance to dissolution of semicrystalline cellulose. Pretreatment is often used to alter the structure of cellulosic biomass in order to make cellulose more accessible to solvents and enzymes. The pretreatment involves physical and/or chemical processing which affects the degree of crystallinity and size of biomass particles. We examine here the effects of (i) solvent properties, pretreatment steps and temperature, and (ii) fiber diameter and degree of crystallinity, on the kinetics of cellulose swelling and dissolution. To this end we have combined (a) experimental results on cotton fiber swelling, change in crystallinity and dissolved amount when treated under different solvent conditions, with... Tipo: Conference paper, poster, etc. Palavras-chave: "Organics" in general; Research communication and quality; Environmental aspects. Ano: 2017 URL: http://orgprints.org/33554/1/2017%20AIChE%20Annual%20Meeting.pdf Fundamental understanding of cellulose dissolution can improve the efficiency of biomass processing Organic Eprints Ghasemi, Mohammad; Tsianou, Marina; Alexandridis, Paschalis. A major barrier to the efficient utilization of biomass is the recalcitrance to dissolution of crystalline cellulose. The aim of this review is to provide an overview of the current understanding of the mechanism and kinetics of cellulose dissolution, with particular attention on how these findings can improve the efficiency of biomass processing. An improved fundamental understanding of cellulose dissolution can guide the rational selection of solvents and the optimization of processing conditions, thus leading to an enhanced utilization of biomass. Tipo: Journal paper Palavras-chave: "Organics" in general; Research communication and quality; Environmental aspects. Ano: 2018 URL: http://orgprints.org/33276/1/Ghasemi-2018-Fundamental%20understanding%20of%20cellulose%20dissolution.pdf Fundamental understanding of cellulose dissolution can improve the efficiency of biomass processing Organic Eprints Ghasemi, Mohammad; Tsianou, Marina; Alexandridis, Paschalis. A major barrier to the efficient utilization of biomass is the recalcitrance to dissolution of crystalline cellulose. The aim of this review is to provide an overview of the current understanding of the mechanism and kinetics of cellulose dissolution, with particular attention on how these findings can improve the efficiency of biomass processing. An improved fundamental understanding of cellulose dissolution can guide the rational selection of solvents and the optimization of processing conditions, thus leading to an enhanced utilization of biomass. Tipo: Journal paper Palavras-chave: "Organics" in general; Research communication and quality; Environmental aspects. Ano: 2018 URL: http://orgprints.org/33575/1/Ghasemi-2018-Fundamental%20understanding%20of%20cellulose%20dissolution.pdf Cellulose pretreatment and dissolution: Selection of solvent and processing conditions Organic Eprints Ghasemi, Mohammad; Vargas-Aponte, Luz V.; Tsianou, Marina; Alexandridis, Paschalis. Efficient utilization of biomass is hindered by the recalcitrance to dissolution of semicrystalline cellulose. Pretreatment is often used to alter the structure of cellulosic biomass in order to make cellulose more accessible to solvents and enzymes. The pretreatment involves physical and/or chemical processing which affects the degree of crystallinity and size of biomass particles. We examine here the effects of (i) solvent properties, pretreatment steps and temperature, and (ii) fiber diameter and degree of crystallinity, on the kinetics of cellulose swelling and dissolution. To this end we have combined (a) experimental results on cotton fiber swelling, change in crystallinity and dissolved amount when treated under different solvent conditions, with... Tipo: Conference paper, poster, etc. Palavras-chave: "Organics" in general; Research communication and quality; Environmental aspects. Ano: 2017 URL: http://orgprints.org/33555/1/2017%20AIChE%20Annual%20Meeting_500694.pdf Registros recuperados: 5 Primeira ... 1 ... Última

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