Correction:Systems Microbiology and Biomanufacturing https://doi.org/10.1007/s43393-023-00197-w In the original article,the author name‘Emmanuel Olusola Oke’was given incorrectly as'Olushola E.Oke'.The origi...Correction:Systems Microbiology and Biomanufacturing https://doi.org/10.1007/s43393-023-00197-w In the original article,the author name‘Emmanuel Olusola Oke’was given incorrectly as'Olushola E.Oke'.The origi-nal article has been corrected.展开更多
Lignin is a renewable bioresource that can be used for a variety of value-added applications.However,the effective separation of lignin from lignocellulosic biomass remains an ongoing challenge.In this study,lignin wa...Lignin is a renewable bioresource that can be used for a variety of value-added applications.However,the effective separation of lignin from lignocellulosic biomass remains an ongoing challenge.In this study,lignin was extracted from waste palm fiber and successfully converted into a dehumidifying material.The following four process parameters of lignin extraction from palm fiber were optimized systematically and comprehensively using the response surface methodology:reaction time,extraction temperature,ethanol concentration and solid/liquid ratio.The results revealed that under the optimum processing conditions(111 min of extraction at 174℃ using 73%ethanol at 1/16 g/mL solid/liquid ratio),the extraction yield of lignin was 56.2%.The recovery of ethanol solvent was as high as 91.8%.Further,the lignin could be directly used without purification to produce lignin-based activated carbon fibers(LACFs)with specific surface area and total pore volume of 1375 m²/g and 0.881 cm³/g,respectively.Compared with the commercial pitch-based activated carbon fiber,the LACF has a higher specific area and superior pore structure parameters.This work provides a feasible route for extracting lignin from natural palm fiber and demonstrates its use in the preparation of activated carbon fiber with a remarkable performance as a solid dehumidification agent.展开更多
The forest biomass is an abundant renewable resource from which biofuels can be derived. In the Kraft process, the cellulose is extracted from the wood to form the paper pulp while the other organic components, primar...The forest biomass is an abundant renewable resource from which biofuels can be derived. In the Kraft process, the cellulose is extracted from the wood to form the paper pulp while the other organic components, primarily hemicelluloses and lignin, are burnt to produce steam. It is possible to divert part of the hemicelluloses or lignin to produce fuels on site, a mode of operation referred to as the integrated forest biorefinery. Hemicelluloses can be hydrolysed into sugars which in turn are converted into ethanol or butanol, while lignin can be extracted from a residual process stream, the black liquor, by acid precipitation, de-ionized, dried and directly used as a fuel or further processed into value added chemicals. Biorefinery processes have been proposed and analysed by simulation on Aspen Plus. Intensive integration of thermal energy, water and material systems is of paramount importance to the sustainability of the global site; the increased energy load on the utility systems could cause rising dependency of the global site on fossil fuels. To avoid this consequence, a new original energy efficiency analysis and enhancement methodology has been developed and validated on actual Canadian Kraft mills before being applied to the integrated biorefinery and, has produced remarkable results far superior to the current engineering practice. This has led to the concept of the GIFBR （green integrated forest biorefinery）, i.e., an industrial site with zero fossil fuel consumption and reduced GHG （greenhouse gases） emissions vs. the Kraft process and biorefinery plant alone. The GIFBR incorporates a woody biomass gasifier producing syngas as a fuel for the integrated biorefinery and for steam production or sale. It can also include a CHP （combined heat and power） unit driven by steam made available by liberated production capacity from the installed power plant.展开更多
文摘Correction:Systems Microbiology and Biomanufacturing https://doi.org/10.1007/s43393-023-00197-w In the original article,the author name‘Emmanuel Olusola Oke’was given incorrectly as'Olushola E.Oke'.The origi-nal article has been corrected.
基金supported by the National Natural Science Foundation of China(Grant number:21965040)Science Research Foundation of Yunnan Education Bureau(Grant numbers:2020Y0098 and 2021Y492).
文摘Lignin is a renewable bioresource that can be used for a variety of value-added applications.However,the effective separation of lignin from lignocellulosic biomass remains an ongoing challenge.In this study,lignin was extracted from waste palm fiber and successfully converted into a dehumidifying material.The following four process parameters of lignin extraction from palm fiber were optimized systematically and comprehensively using the response surface methodology:reaction time,extraction temperature,ethanol concentration and solid/liquid ratio.The results revealed that under the optimum processing conditions(111 min of extraction at 174℃ using 73%ethanol at 1/16 g/mL solid/liquid ratio),the extraction yield of lignin was 56.2%.The recovery of ethanol solvent was as high as 91.8%.Further,the lignin could be directly used without purification to produce lignin-based activated carbon fibers(LACFs)with specific surface area and total pore volume of 1375 m²/g and 0.881 cm³/g,respectively.Compared with the commercial pitch-based activated carbon fiber,the LACF has a higher specific area and superior pore structure parameters.This work provides a feasible route for extracting lignin from natural palm fiber and demonstrates its use in the preparation of activated carbon fiber with a remarkable performance as a solid dehumidification agent.
文摘The forest biomass is an abundant renewable resource from which biofuels can be derived. In the Kraft process, the cellulose is extracted from the wood to form the paper pulp while the other organic components, primarily hemicelluloses and lignin, are burnt to produce steam. It is possible to divert part of the hemicelluloses or lignin to produce fuels on site, a mode of operation referred to as the integrated forest biorefinery. Hemicelluloses can be hydrolysed into sugars which in turn are converted into ethanol or butanol, while lignin can be extracted from a residual process stream, the black liquor, by acid precipitation, de-ionized, dried and directly used as a fuel or further processed into value added chemicals. Biorefinery processes have been proposed and analysed by simulation on Aspen Plus. Intensive integration of thermal energy, water and material systems is of paramount importance to the sustainability of the global site; the increased energy load on the utility systems could cause rising dependency of the global site on fossil fuels. To avoid this consequence, a new original energy efficiency analysis and enhancement methodology has been developed and validated on actual Canadian Kraft mills before being applied to the integrated biorefinery and, has produced remarkable results far superior to the current engineering practice. This has led to the concept of the GIFBR （green integrated forest biorefinery）, i.e., an industrial site with zero fossil fuel consumption and reduced GHG （greenhouse gases） emissions vs. the Kraft process and biorefinery plant alone. The GIFBR incorporates a woody biomass gasifier producing syngas as a fuel for the integrated biorefinery and for steam production or sale. It can also include a CHP （combined heat and power） unit driven by steam made available by liberated production capacity from the installed power plant.
