The Experts below are selected from a list of 2514 Experts worldwide ranked by ideXlab platform
Zhihua Liu - One of the best experts on this subject based on the ideXlab platform.
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steam explosion and its combinatorial pretreatment refining technology of plant Biomass to bio based products
Biotechnology Journal, 2015Co-Authors: Hongzhang Che, Zhihua LiuAbstract:Pretreatment is a key unit operation affecting the Refinery efficiency of plant Biomass. However, the poor efficiency of pretreatment and the lack of basic theory are the main challenges to the industrial implementation of the plant Biomass Refinery. The purpose of this work is to review steam explosion and its combinatorial pretreatment as a means of overcoming the intrinsic characteristics of plant Biomass, including recalcitrance, heterogeneity, multi-composition, and diversity. The main advantages of the selective use of steam explosion and other combinatorial pretreatments across the diversity of raw materials are introduced. Combinatorial pretreatment integrated with other unit operations is proposed as a means to exploit the high-efficiency production of bio-based products from plant Biomass. Finally, several pilot- and demonstration-scale operations of the plant Biomass Refinery are described. Based on the principle of selective function and structure fractionation, and multi-level and directional composition conversion, an integrated process with the combinatorial pretreatments of steam explosion and other pretreatments as the core should be feasible and conform to the plant Biomass Refinery concept. Combinatorial pretreatments of steam explosion and other pretreatments should be further exploited based on the type and intrinsic characteristics of the plant Biomass used, the bio-based products to be made, and the complementarity of the processes.
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Steam explosion and its combinatorial pretreatment refining technology of plant Biomass to bio‐based products
Biotechnology journal, 2015Co-Authors: Hongzhang Chen, Zhihua LiuAbstract:Pretreatment is a key unit operation affecting the Refinery efficiency of plant Biomass. However, the poor efficiency of pretreatment and the lack of basic theory are the main challenges to the industrial implementation of the plant Biomass Refinery. The purpose of this work is to review steam explosion and its combinatorial pretreatment as a means of overcoming the intrinsic characteristics of plant Biomass, including recalcitrance, heterogeneity, multi-composition, and diversity. The main advantages of the selective use of steam explosion and other combinatorial pretreatments across the diversity of raw materials are introduced. Combinatorial pretreatment integrated with other unit operations is proposed as a means to exploit the high-efficiency production of bio-based products from plant Biomass. Finally, several pilot- and demonstration-scale operations of the plant Biomass Refinery are described. Based on the principle of selective function and structure fractionation, and multi-level and directional composition conversion, an integrated process with the combinatorial pretreatments of steam explosion and other pretreatments as the core should be feasible and conform to the plant Biomass Refinery concept. Combinatorial pretreatments of steam explosion and other pretreatments should be further exploited based on the type and intrinsic characteristics of the plant Biomass used, the bio-based products to be made, and the complementarity of the processes.
Akiyoshi Sakoda - One of the best experts on this subject based on the ideXlab platform.
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separation of phenols and furfural by pervaporation and reverse osmosis membranes from Biomass superheated steam pyrolysis derived aqueous solution
Bioresource Technology, 2007Co-Authors: Masaki Sagehashi, Tsuyoshi Nomura, Hiromu Shishido, Akiyoshi SakodaAbstract:The separation of valuable chemicals from raw products, where a great number of chemicals coexist, is the key technology in Biomass Refinery. In this study, the applicability of membrane separation of valuable chemicals from our currently developed portable superheated steam (SHS) Biomass pyrolysis process was demonstrated. Phenols (phenol, p-cresol, guaiacol, methyl guaiacol, and ethyl guaiacol), furfural, and acetone were successfully separated by pervaporation using the silicone rubber membrane from model solutions and an actual SHS derived aqueous solution. The solution was also concentrated effectively by reverse osmosis separation using a polyamide membrane. When a high concentration of SHS solution was fed to the pervaporation process, a phase-separated permeate was obtained, which indicated that the reverse osmosis concentration combined with pervaporation separation is useful for the superheated steam process.
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superheated steam pyrolysis of Biomass elemental components and sugi japanese cedar for fuels and chemicals
Bioresource Technology, 2006Co-Authors: Masaki Sagehashi, Hiromu Shishido, Noritaka Miyasaka, Akiyoshi SakodaAbstract:To develop a novel noncatalytic Biomass Refinery process that can be used as a portable process, superheated steam pyrolysis was investigated to produce both carbonized solid fuels and chemicals using a large-scale reactor. Individual Biomass components and native Biomass (Sugi, Japanese cedar) were pyrolyzed. Between 150 and 400 degrees C, the vaporizing fractions of cellulose, xylan, and kraft lignin were summarized using a numerical model. Cellulose was converted to glycolaldehyde, furfural, 5-hydroxymethyl furfural and levoglucosan, whereas xylan was converted to glycolaldehyde, furfural, and acetic acid. Kraft lignin produced a slight yield of phenol and guaiacol. The total vaporization fraction of Sugi and its vaporizing rate were explained sufficiently using a numerical model based on the weighted average of the vaporizing properties of the individual components. However, the yields of phenol, guaiacol, and acetic acid were underestimated, while the yields of furfurals and levoglucosan were overestimated. Possible synergetic effects among chemicals in the superheated steam pyrolysis of native Biomass were also discussed.
Xiao Zhang - One of the best experts on this subject based on the ideXlab platform.
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catalytic oxidation of bioRefinery lignin to value added chemicals to support sustainable biofuel production
Chemsuschem, 2015Co-Authors: Yan Xu, Xiao ZhangAbstract:: Transforming plant Biomass to biofuel is one of the few solutions that can truly sustain mankind's long-term needs for liquid transportation fuel with minimized environmental impact. However, despite decades of effort, commercial development of Biomass-to-biofuel conversion processes is still not an economically viable proposition. Identifying value-added co-products along with the production of biofuel provides a key solution to overcoming this economic barrier. Lignin is the second most abundant component next to cellulose in almost all plant Biomass; the emerging Biomass Refinery industry will inevitably generate an enormous amount of lignin. Development of selective bioRefinery lignin-to-bioproducts conversion processes will play a pivotal role in significantly improving the economic feasibility and sustainability of biofuel production from renewable Biomass. The urgency and importance of this endeavor has been increasingly recognized in the last few years. This paper reviews state-of-the-art oxidative lignin depolymerization chemistries employed in the papermaking process and oxidative catalysts that can be applied to bioRefinery lignin to produce platform chemicals including phenolic compounds, dicarboxylic acids, and quinones in high selectivity and yield. The potential synergies of integrating new catalysts with commercial delignification chemistries are discussed. We hope the information will build on the existing body of knowledge to provide new insights towards developing practical and commercially viable lignin conversion technologies, enabling sustainable biofuel production from lignocellulosic Biomass to be competitive with fossil fuel.
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Catalytic Oxidation of BioRefinery Lignin to Value‐added Chemicals to Support Sustainable Biofuel Production
ChemSusChem, 2014Co-Authors: Xiao ZhangAbstract:Transforming plant Biomass to biofuel is one of the few solutions that can truly sustain mankind’s long-term needs for liquid transportation fuel with minimized environmental impact. However, despite decades of effort, commercial development of Biomass-to-biofuel conversion processes is still not an economically viable proposition. Identifying value-added co-products along with the production of biofuel provides a key solution to overcoming this economic barrier. Lignin is the second most abundant component next to cellulose in almost all plant Biomass; the emerging Biomass Refinery industry will inevitably generate an enormous amount of lignin. Development of selective bioRefinery lignin-to-bioproducts conversion processes will play a pivotal role in significantly improving the economic feasibility and sustainability of biofuel production from renewable Biomass. The urgency and importance of this endeavor has been increasingly recognized in the last few years. This paper reviews state-of-the-art oxidative lignin depolymerization chemistries employed in the papermaking process and oxidative catalysts that can be applied to bioRefinery lignin to produce platform chemicals including phenolic compounds, dicarboxylic acids, and quinones in high selectivity and yield. The potential synergies of integrating new catalysts with commercial delignification chemistries are discussed. We hope the information will build on the existing body of knowledge to provide new insights towards developing practical and commercially viable lignin conversion technologies, enabling sustainable biofuel production from lignocellulosic Biomass to be competitive with fossil fuel.
Hongzhang Chen - One of the best experts on this subject based on the ideXlab platform.
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Characterization and Research Methods of Gas-Exploded Materials
Gas Explosion Technology and Biomass Refinery, 2015Co-Authors: Hongzhang ChenAbstract:The cell length, cell wall thickness, and lumen diameter are the main characteristics of cellulose materials. Different products, such as paper, panel, and fuels, call for different length conditions of fibrocytes. Furthermore, during Biomass Refinery process, fibers are about to change through various physical or chemical treatments, which will affect the properties. Thus, it is necessary to analyze the cell length of fibrocytes in this part.
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Steam explosion and its combinatorial pretreatment refining technology of plant Biomass to bio‐based products
Biotechnology journal, 2015Co-Authors: Hongzhang Chen, Zhihua LiuAbstract:Pretreatment is a key unit operation affecting the Refinery efficiency of plant Biomass. However, the poor efficiency of pretreatment and the lack of basic theory are the main challenges to the industrial implementation of the plant Biomass Refinery. The purpose of this work is to review steam explosion and its combinatorial pretreatment as a means of overcoming the intrinsic characteristics of plant Biomass, including recalcitrance, heterogeneity, multi-composition, and diversity. The main advantages of the selective use of steam explosion and other combinatorial pretreatments across the diversity of raw materials are introduced. Combinatorial pretreatment integrated with other unit operations is proposed as a means to exploit the high-efficiency production of bio-based products from plant Biomass. Finally, several pilot- and demonstration-scale operations of the plant Biomass Refinery are described. Based on the principle of selective function and structure fractionation, and multi-level and directional composition conversion, an integrated process with the combinatorial pretreatments of steam explosion and other pretreatments as the core should be feasible and conform to the plant Biomass Refinery concept. Combinatorial pretreatments of steam explosion and other pretreatments should be further exploited based on the type and intrinsic characteristics of the plant Biomass used, the bio-based products to be made, and the complementarity of the processes.
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Integrated industrial lignocellulose bioRefinery chains
Lignocellulose Biorefinery Engineering, 2015Co-Authors: Hongzhang ChenAbstract:To achieve efficient conversion of Biomass resources, it is necessary to follow the principles of clean production and sustainable development, and from the perspective of green chemistry and ecological process engineering systems, to acquire the effective fractionation of lignocellulose components and undergo multiproducts-oriented conversion through integrating multiple technologies, consequently realizing the full utilization of Biomass. Following these ideas, this chapter summarizes various integrated industrial Biomass Refinery chains, involving Refinery modes for herbaceous plants (corn stalk, bamboo, and hemp), softwood, hardwood, and medicinal plant resources (kudzu, sumac).
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Low temperature plasma technology for Biomass Refinery
Chinese Journal of Biotechnology, 2014Co-Authors: Hongzhang ChenAbstract:BioRefinery that utilizes renewable Biomass for production of fuels, chemicals and bio-materials has become more and more important in chemical industry. Recently, steam explosion technology, acid and alkali treatment are the main bioRefinery treatment technologies. Meanwhile, low temperature plasma technology has attracted extensive attention in Biomass refining process due to its unique chemical activity and high energy. We systemically summarize the research progress of low temperature plasma technology for pretreatment, sugar platflow, selective modification, liquefaction and gasification in Biomass Refinery. Moreover, the mechanism of low temperature plasma in bioRefinery and its further development were also discussed.
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Sumac (Rhus chinensis Mill) Biomass Refinery engineering
Chinese Journal of Biotechnology, 2014Co-Authors: Lan Wang, Ning Wang, Hongzhang ChenAbstract:Sumac (Rhus chinensis Mill) is an abundant and widely distributed Chinese native plant. Sumac fruit contains low content of vegetable oil, as an atypical oil plants hardly being processed through traditional vegetable oil production technologies. Based on our own studies on the characteristics of sumac fruit and branches, we established a novel model of sumac Biomass Refinery, and constructed the sumac Biomass Refinery technology system and eco-industrial chain integration. Steam explosion was the key technology, and several components fractionation technologies were integrated in the sumac Biomass Refinery system. The fractionated components were converted into different products depending on their functional features. Eight products including sumac fruit oil, biodiesel, protein feed, flavonoids, unbleached facial tissue, phenolic resin, Biomass briquette and biogas were produced in the Refinery. The extracted sumac fruit oil by steam explosion pretreatment was applied for the new food resource of Ministry of Health, and the permit was approved. This research provides a new model for the development of atypical wild plant resources.
Masaki Sagehashi - One of the best experts on this subject based on the ideXlab platform.
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separation of phenols and furfural by pervaporation and reverse osmosis membranes from Biomass superheated steam pyrolysis derived aqueous solution
Bioresource Technology, 2007Co-Authors: Masaki Sagehashi, Tsuyoshi Nomura, Hiromu Shishido, Akiyoshi SakodaAbstract:The separation of valuable chemicals from raw products, where a great number of chemicals coexist, is the key technology in Biomass Refinery. In this study, the applicability of membrane separation of valuable chemicals from our currently developed portable superheated steam (SHS) Biomass pyrolysis process was demonstrated. Phenols (phenol, p-cresol, guaiacol, methyl guaiacol, and ethyl guaiacol), furfural, and acetone were successfully separated by pervaporation using the silicone rubber membrane from model solutions and an actual SHS derived aqueous solution. The solution was also concentrated effectively by reverse osmosis separation using a polyamide membrane. When a high concentration of SHS solution was fed to the pervaporation process, a phase-separated permeate was obtained, which indicated that the reverse osmosis concentration combined with pervaporation separation is useful for the superheated steam process.
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superheated steam pyrolysis of Biomass elemental components and sugi japanese cedar for fuels and chemicals
Bioresource Technology, 2006Co-Authors: Masaki Sagehashi, Hiromu Shishido, Noritaka Miyasaka, Akiyoshi SakodaAbstract:To develop a novel noncatalytic Biomass Refinery process that can be used as a portable process, superheated steam pyrolysis was investigated to produce both carbonized solid fuels and chemicals using a large-scale reactor. Individual Biomass components and native Biomass (Sugi, Japanese cedar) were pyrolyzed. Between 150 and 400 degrees C, the vaporizing fractions of cellulose, xylan, and kraft lignin were summarized using a numerical model. Cellulose was converted to glycolaldehyde, furfural, 5-hydroxymethyl furfural and levoglucosan, whereas xylan was converted to glycolaldehyde, furfural, and acetic acid. Kraft lignin produced a slight yield of phenol and guaiacol. The total vaporization fraction of Sugi and its vaporizing rate were explained sufficiently using a numerical model based on the weighted average of the vaporizing properties of the individual components. However, the yields of phenol, guaiacol, and acetic acid were underestimated, while the yields of furfurals and levoglucosan were overestimated. Possible synergetic effects among chemicals in the superheated steam pyrolysis of native Biomass were also discussed.