The Experts below are selected from a list of 16449 Experts worldwide ranked by ideXlab platform
Antonio Aprigio Da Silva Curvelo - One of the best experts on this subject based on the ideXlab platform.
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low liquid Solid Ratio fractionation of sugarcane bagasse by hot water autohydrolysis and organosolv delignification
Industrial Crops and Products, 2015Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Abstract In this study, the fractionation of sugarcane bagasse at low liquor-Solid Ratio (LSR) was firstly reported. The effect of low LSR fractionation of sugarcane bagasse by hot water autohydrolysis and organosolv delignification that consume minimal amounts of water was studied to obtain a cellulosic fraction (glucans) that is suitable for conversion to ethanol. Hot water pretreated bagasse was delignified using varied process conditions: 160–190 °C, 30–150 min and LSR 3–9. The results were compared with the untreated bagasse using the same delignification conditions. The delignification of the pretreated bagasse extracted of 86.7% of lignin and produced a Solid with 90.0% of glucans (190 °C for 150 min and LSR 9). A Solid consisting of 82.9% of glucans with a slightly greater lignin content was obtained with a LSR 3 whilst delignification of untreated bagasse extracted 91.3 and 92.0% of lignin (87.7 and 88.4% of glucans) for LSRs 3 and 9, respectively. Low liquor–Solid Ratio fractionation allowed the direct sepaRation of the hemicelluloses and lignin to produce a Solid with high glucans.
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low liquid Solid Ratio lsr hot water pretreatment of sugarcane bagasse
Green Chemistry, 2012Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Low liquid–Solid Ratio (LSR) can be used to obtain high-content xylo-oligosaccharide (XOS) spend liquor by hot water pretreatment. Developing a technology based on low LSR results in more efficient water usage in the system and thus in lower capital and operating costs. Xylans from xylan rich agro-industrial waste are abundant hemicellulosic polymers with enormous potential for industrial applications. Currently, freeze-dried xylo-oligosaccharides are used as bio-based polymers and hydrolysates containing high xylose contents are converted to several chemical products. In this study, sugarcane bagasse was treated with water at low LSRs and mild temperatures in order to assess the effects of varying the pretreatment conditions on the xylo-oligosaccharide and xylose concentRations, and use a central composite experimental design to optimize the process parameters. The pretreatments were performed in the ranges temperature: 143.3–176.7 °C, time: 20–70 min and LSR: 1 : 1 to 11 : 1 (g g−1). The maximum concentRations of xylose and xylan were 13.76 and 36.18 g L−1 (equivalent to 48.29 g L−1 of xylan), respectively, which were achieved by treating bagasse at 170 °C for 60 min, with LSR of 3 g g−1. The amount of xylan removed under these conditions was almost 57%. The soluble xylan consisted mainly of xylo-oligosaccharides (74 wt% of the identified compound in the spent liquor).
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Low liquid–Solid Ratio (LSR) hot water pretreatment of sugarcane bagasse
Green Chemistry, 2012Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Low liquid–Solid Ratio (LSR) can be used to obtain high-content xylo-oligosaccharide (XOS) spend liquor by hot water pretreatment. Developing a technology based on low LSR results in more efficient water usage in the system and thus in lower capital and operating costs. Xylans from xylan rich agro-industrial waste are abundant hemicellulosic polymers with enormous potential for industrial applications. Currently, freeze-dried xylo-oligosaccharides are used as bio-based polymers and hydrolysates containing high xylose contents are converted to several chemical products. In this study, sugarcane bagasse was treated with water at low LSRs and mild temperatures in order to assess the effects of varying the pretreatment conditions on the xylo-oligosaccharide and xylose concentRations, and use a central composite experimental design to optimize the process parameters. The pretreatments were performed in the ranges temperature: 143.3–176.7 °C, time: 20–70 min and LSR: 1 : 1 to 11 : 1 (g g−1). The maximum concentRations of xylose and xylan were 13.76 and 36.18 g L−1 (equivalent to 48.29 g L−1 of xylan), respectively, which were achieved by treating bagasse at 170 °C for 60 min, with LSR of 3 g g−1. The amount of xylan removed under these conditions was almost 57%. The soluble xylan consisted mainly of xylo-oligosaccharides (74 wt% of the identified compound in the spent liquor).
Maria Evangelina Vallejos - One of the best experts on this subject based on the ideXlab platform.
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low liquid Solid Ratio fractionation of sugarcane bagasse by hot water autohydrolysis and organosolv delignification
Industrial Crops and Products, 2015Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Abstract In this study, the fractionation of sugarcane bagasse at low liquor-Solid Ratio (LSR) was firstly reported. The effect of low LSR fractionation of sugarcane bagasse by hot water autohydrolysis and organosolv delignification that consume minimal amounts of water was studied to obtain a cellulosic fraction (glucans) that is suitable for conversion to ethanol. Hot water pretreated bagasse was delignified using varied process conditions: 160–190 °C, 30–150 min and LSR 3–9. The results were compared with the untreated bagasse using the same delignification conditions. The delignification of the pretreated bagasse extracted of 86.7% of lignin and produced a Solid with 90.0% of glucans (190 °C for 150 min and LSR 9). A Solid consisting of 82.9% of glucans with a slightly greater lignin content was obtained with a LSR 3 whilst delignification of untreated bagasse extracted 91.3 and 92.0% of lignin (87.7 and 88.4% of glucans) for LSRs 3 and 9, respectively. Low liquor–Solid Ratio fractionation allowed the direct sepaRation of the hemicelluloses and lignin to produce a Solid with high glucans.
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low liquid Solid Ratio lsr hot water pretreatment of sugarcane bagasse
Green Chemistry, 2012Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Low liquid–Solid Ratio (LSR) can be used to obtain high-content xylo-oligosaccharide (XOS) spend liquor by hot water pretreatment. Developing a technology based on low LSR results in more efficient water usage in the system and thus in lower capital and operating costs. Xylans from xylan rich agro-industrial waste are abundant hemicellulosic polymers with enormous potential for industrial applications. Currently, freeze-dried xylo-oligosaccharides are used as bio-based polymers and hydrolysates containing high xylose contents are converted to several chemical products. In this study, sugarcane bagasse was treated with water at low LSRs and mild temperatures in order to assess the effects of varying the pretreatment conditions on the xylo-oligosaccharide and xylose concentRations, and use a central composite experimental design to optimize the process parameters. The pretreatments were performed in the ranges temperature: 143.3–176.7 °C, time: 20–70 min and LSR: 1 : 1 to 11 : 1 (g g−1). The maximum concentRations of xylose and xylan were 13.76 and 36.18 g L−1 (equivalent to 48.29 g L−1 of xylan), respectively, which were achieved by treating bagasse at 170 °C for 60 min, with LSR of 3 g g−1. The amount of xylan removed under these conditions was almost 57%. The soluble xylan consisted mainly of xylo-oligosaccharides (74 wt% of the identified compound in the spent liquor).
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Low liquid–Solid Ratio (LSR) hot water pretreatment of sugarcane bagasse
Green Chemistry, 2012Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Low liquid–Solid Ratio (LSR) can be used to obtain high-content xylo-oligosaccharide (XOS) spend liquor by hot water pretreatment. Developing a technology based on low LSR results in more efficient water usage in the system and thus in lower capital and operating costs. Xylans from xylan rich agro-industrial waste are abundant hemicellulosic polymers with enormous potential for industrial applications. Currently, freeze-dried xylo-oligosaccharides are used as bio-based polymers and hydrolysates containing high xylose contents are converted to several chemical products. In this study, sugarcane bagasse was treated with water at low LSRs and mild temperatures in order to assess the effects of varying the pretreatment conditions on the xylo-oligosaccharide and xylose concentRations, and use a central composite experimental design to optimize the process parameters. The pretreatments were performed in the ranges temperature: 143.3–176.7 °C, time: 20–70 min and LSR: 1 : 1 to 11 : 1 (g g−1). The maximum concentRations of xylose and xylan were 13.76 and 36.18 g L−1 (equivalent to 48.29 g L−1 of xylan), respectively, which were achieved by treating bagasse at 170 °C for 60 min, with LSR of 3 g g−1. The amount of xylan removed under these conditions was almost 57%. The soluble xylan consisted mainly of xylo-oligosaccharides (74 wt% of the identified compound in the spent liquor).
Thomas De Beer - One of the best experts on this subject based on the ideXlab platform.
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liquid to Solid Ratio control as an advanced process control solution for continuous twin screw wet granulation
Aiche Journal, 2018Co-Authors: Niels Nicolai, Fien De Leersnyder, Dana Copot, Michiel Stock, Claramihaela Ionescu, Krist V Gernaey, Ingmar Nopens, Thomas De BeerAbstract:Assuring compliance of intermediate and final quality attributes in a continuous pharmaceutical manufacturing campaign is of utmost importance. Application of corrective actions might be required in real-time. This work exemplifies the steps needed to identify a linear pulse transfer function for the dynamic behavior of the granule liquid-to-Solid Ratio (%w/w) at the end of the granulation unit of a commercial ConsiGma(TM)-25 production line. Near-infrared spectroscopy was used to monitor the granule composition in-line. The outcome for both the tracking and regulator problem using either conventional or model predictive control was implemented and evaluated. Dynamic setpoints were correctly followed and an RMSE of 0.25%w/w with respect to the setpoint was obtained when inducing artificial disturbances. Important practical challenges were also tackled. Examples are fouling, computational limitations, and the limited flexibility of the automation software. Applying the proposed advanced process control solution offers an answer to upstream material flow rate deviations. (c) 2018 American Institute of Chemical Engineers AIChE J, 64: 2500-2514, 2018
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Liquid‐to‐Solid Ratio control as an advanced process control solution for continuous twin‐screw wet granulation
Aiche Journal, 2018Co-Authors: Niels Nicolai, Fien De Leersnyder, Dana Copot, Michiel Stock, Claramihaela Ionescu, Krist V Gernaey, Ingmar Nopens, Thomas De BeerAbstract:Assuring compliance of intermediate and final quality attributes in a continuous pharmaceutical manufacturing campaign is of utmost importance. Application of corrective actions might be required in real-time. This work exemplifies the steps needed to identify a linear pulse transfer function for the dynamic behavior of the granule liquid-to-Solid Ratio (%w/w) at the end of the granulation unit of a commercial ConsiGma(TM)-25 production line. Near-infrared spectroscopy was used to monitor the granule composition in-line. The outcome for both the tracking and regulator problem using either conventional or model predictive control was implemented and evaluated. Dynamic setpoints were correctly followed and an RMSE of 0.25%w/w with respect to the setpoint was obtained when inducing artificial disturbances. Important practical challenges were also tackled. Examples are fouling, computational limitations, and the limited flexibility of the automation software. Applying the proposed advanced process control solution offers an answer to upstream material flow rate deviations. (c) 2018 American Institute of Chemical Engineers AIChE J, 64: 2500-2514, 2018
Maria Cristina Area - One of the best experts on this subject based on the ideXlab platform.
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low liquid Solid Ratio fractionation of sugarcane bagasse by hot water autohydrolysis and organosolv delignification
Industrial Crops and Products, 2015Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Abstract In this study, the fractionation of sugarcane bagasse at low liquor-Solid Ratio (LSR) was firstly reported. The effect of low LSR fractionation of sugarcane bagasse by hot water autohydrolysis and organosolv delignification that consume minimal amounts of water was studied to obtain a cellulosic fraction (glucans) that is suitable for conversion to ethanol. Hot water pretreated bagasse was delignified using varied process conditions: 160–190 °C, 30–150 min and LSR 3–9. The results were compared with the untreated bagasse using the same delignification conditions. The delignification of the pretreated bagasse extracted of 86.7% of lignin and produced a Solid with 90.0% of glucans (190 °C for 150 min and LSR 9). A Solid consisting of 82.9% of glucans with a slightly greater lignin content was obtained with a LSR 3 whilst delignification of untreated bagasse extracted 91.3 and 92.0% of lignin (87.7 and 88.4% of glucans) for LSRs 3 and 9, respectively. Low liquor–Solid Ratio fractionation allowed the direct sepaRation of the hemicelluloses and lignin to produce a Solid with high glucans.
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low liquid Solid Ratio lsr hot water pretreatment of sugarcane bagasse
Green Chemistry, 2012Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Low liquid–Solid Ratio (LSR) can be used to obtain high-content xylo-oligosaccharide (XOS) spend liquor by hot water pretreatment. Developing a technology based on low LSR results in more efficient water usage in the system and thus in lower capital and operating costs. Xylans from xylan rich agro-industrial waste are abundant hemicellulosic polymers with enormous potential for industrial applications. Currently, freeze-dried xylo-oligosaccharides are used as bio-based polymers and hydrolysates containing high xylose contents are converted to several chemical products. In this study, sugarcane bagasse was treated with water at low LSRs and mild temperatures in order to assess the effects of varying the pretreatment conditions on the xylo-oligosaccharide and xylose concentRations, and use a central composite experimental design to optimize the process parameters. The pretreatments were performed in the ranges temperature: 143.3–176.7 °C, time: 20–70 min and LSR: 1 : 1 to 11 : 1 (g g−1). The maximum concentRations of xylose and xylan were 13.76 and 36.18 g L−1 (equivalent to 48.29 g L−1 of xylan), respectively, which were achieved by treating bagasse at 170 °C for 60 min, with LSR of 3 g g−1. The amount of xylan removed under these conditions was almost 57%. The soluble xylan consisted mainly of xylo-oligosaccharides (74 wt% of the identified compound in the spent liquor).
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Low liquid–Solid Ratio (LSR) hot water pretreatment of sugarcane bagasse
Green Chemistry, 2012Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Low liquid–Solid Ratio (LSR) can be used to obtain high-content xylo-oligosaccharide (XOS) spend liquor by hot water pretreatment. Developing a technology based on low LSR results in more efficient water usage in the system and thus in lower capital and operating costs. Xylans from xylan rich agro-industrial waste are abundant hemicellulosic polymers with enormous potential for industrial applications. Currently, freeze-dried xylo-oligosaccharides are used as bio-based polymers and hydrolysates containing high xylose contents are converted to several chemical products. In this study, sugarcane bagasse was treated with water at low LSRs and mild temperatures in order to assess the effects of varying the pretreatment conditions on the xylo-oligosaccharide and xylose concentRations, and use a central composite experimental design to optimize the process parameters. The pretreatments were performed in the ranges temperature: 143.3–176.7 °C, time: 20–70 min and LSR: 1 : 1 to 11 : 1 (g g−1). The maximum concentRations of xylose and xylan were 13.76 and 36.18 g L−1 (equivalent to 48.29 g L−1 of xylan), respectively, which were achieved by treating bagasse at 170 °C for 60 min, with LSR of 3 g g−1. The amount of xylan removed under these conditions was almost 57%. The soluble xylan consisted mainly of xylo-oligosaccharides (74 wt% of the identified compound in the spent liquor).
Marcia Dib Zambon - One of the best experts on this subject based on the ideXlab platform.
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low liquid Solid Ratio fractionation of sugarcane bagasse by hot water autohydrolysis and organosolv delignification
Industrial Crops and Products, 2015Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Abstract In this study, the fractionation of sugarcane bagasse at low liquor-Solid Ratio (LSR) was firstly reported. The effect of low LSR fractionation of sugarcane bagasse by hot water autohydrolysis and organosolv delignification that consume minimal amounts of water was studied to obtain a cellulosic fraction (glucans) that is suitable for conversion to ethanol. Hot water pretreated bagasse was delignified using varied process conditions: 160–190 °C, 30–150 min and LSR 3–9. The results were compared with the untreated bagasse using the same delignification conditions. The delignification of the pretreated bagasse extracted of 86.7% of lignin and produced a Solid with 90.0% of glucans (190 °C for 150 min and LSR 9). A Solid consisting of 82.9% of glucans with a slightly greater lignin content was obtained with a LSR 3 whilst delignification of untreated bagasse extracted 91.3 and 92.0% of lignin (87.7 and 88.4% of glucans) for LSRs 3 and 9, respectively. Low liquor–Solid Ratio fractionation allowed the direct sepaRation of the hemicelluloses and lignin to produce a Solid with high glucans.
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low liquid Solid Ratio lsr hot water pretreatment of sugarcane bagasse
Green Chemistry, 2012Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Low liquid–Solid Ratio (LSR) can be used to obtain high-content xylo-oligosaccharide (XOS) spend liquor by hot water pretreatment. Developing a technology based on low LSR results in more efficient water usage in the system and thus in lower capital and operating costs. Xylans from xylan rich agro-industrial waste are abundant hemicellulosic polymers with enormous potential for industrial applications. Currently, freeze-dried xylo-oligosaccharides are used as bio-based polymers and hydrolysates containing high xylose contents are converted to several chemical products. In this study, sugarcane bagasse was treated with water at low LSRs and mild temperatures in order to assess the effects of varying the pretreatment conditions on the xylo-oligosaccharide and xylose concentRations, and use a central composite experimental design to optimize the process parameters. The pretreatments were performed in the ranges temperature: 143.3–176.7 °C, time: 20–70 min and LSR: 1 : 1 to 11 : 1 (g g−1). The maximum concentRations of xylose and xylan were 13.76 and 36.18 g L−1 (equivalent to 48.29 g L−1 of xylan), respectively, which were achieved by treating bagasse at 170 °C for 60 min, with LSR of 3 g g−1. The amount of xylan removed under these conditions was almost 57%. The soluble xylan consisted mainly of xylo-oligosaccharides (74 wt% of the identified compound in the spent liquor).
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Low liquid–Solid Ratio (LSR) hot water pretreatment of sugarcane bagasse
Green Chemistry, 2012Co-Authors: Maria Evangelina Vallejos, Marcia Dib Zambon, Maria Cristina Area, Antonio Aprigio Da Silva CurveloAbstract:Low liquid–Solid Ratio (LSR) can be used to obtain high-content xylo-oligosaccharide (XOS) spend liquor by hot water pretreatment. Developing a technology based on low LSR results in more efficient water usage in the system and thus in lower capital and operating costs. Xylans from xylan rich agro-industrial waste are abundant hemicellulosic polymers with enormous potential for industrial applications. Currently, freeze-dried xylo-oligosaccharides are used as bio-based polymers and hydrolysates containing high xylose contents are converted to several chemical products. In this study, sugarcane bagasse was treated with water at low LSRs and mild temperatures in order to assess the effects of varying the pretreatment conditions on the xylo-oligosaccharide and xylose concentRations, and use a central composite experimental design to optimize the process parameters. The pretreatments were performed in the ranges temperature: 143.3–176.7 °C, time: 20–70 min and LSR: 1 : 1 to 11 : 1 (g g−1). The maximum concentRations of xylose and xylan were 13.76 and 36.18 g L−1 (equivalent to 48.29 g L−1 of xylan), respectively, which were achieved by treating bagasse at 170 °C for 60 min, with LSR of 3 g g−1. The amount of xylan removed under these conditions was almost 57%. The soluble xylan consisted mainly of xylo-oligosaccharides (74 wt% of the identified compound in the spent liquor).
