The Experts below are selected from a list of 67167 Experts worldwide ranked by ideXlab platform
Jihong Chen - One of the best experts on this subject based on the ideXlab platform.
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Pretreatment of sweet sorghum straw and its enzymatic digestion: insight into the structural changes and visualization of Hydrolysis Process
Biotechnology for Biofuels, 2019Co-Authors: Miaoyin Dong, Fuqiang Xu, Qiaoqiao Li, Junkai Wang, Jihong Chen, Shuyang Wang, Ning Du Yang, Wenjian LiAbstract:BackgroundThe efficient utilization of lignocellulosic biomass for biofuel production has received increasing attention. Previous studies have investigated the pretreatment Process of biomass, but the detailed enzymatic Hydrolysis Process of pretreated biomass remains largely unclear. Thus, this study investigated the pretreatment efficiency of dilute alkali, acid, hydrogen peroxide and its ultimate effects on enzymatic Hydrolysis. Furthermore, to better understand the enzymatic digestion Process of alkali-pretreated sweet sorghum straw (SSS), multimodal microscopy techniques were used to visualize the enzymatic Hydrolysis Process.ResultAfter pretreatment with alkali, an enzymatic Hydrolysis efficiency of 86.44% was obtained, which increased by 99.54% compared to the untreated straw (43.23%). The FTIR, XRD and SEM characterization revealed a sequence of microstructural changes occurring in plant cell walls after pretreatment, including the destruction of lignin–polysaccharide interactions, the increase of porosity and crystallinity, and reduction of recalcitrance. During the course of Hydrolysis, the cellulase dissolved the cell walls in the same manner and the digestion firstly occurred from the middle of cell walls and then toward the cell wall corners. The CLSM coupled with fluorescent labeling demonstrated that the sclerenchyma cells and vascular bundles in natural SSS were highly lignified, which caused the nonproductive bindings of cellulase on lignin. However, the efficient delignification significantly increased the accessibility and digestibility of cellulase to biomass, thereby improving the saccharification efficiency.ConclusionThis work will be helpful in investigating the biomass pretreatment and its structural characterization. In addition, the visualization results of the enzymatic Hydrolysis Process of pretreated lignocellulose could be used for guidance to explore the lignocellulosic biomass Processing and large-scale biofuel production.
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Pretreatment of sweet sorghum straw and its enzymatic digestion: insight into the structural changes and visualization of Hydrolysis Process
Biotechnology for biofuels, 2019Co-Authors: Miaoyin Dong, Junkai Wang, Shuyang Wang, Ning Du Yang, Jihong ChenAbstract:The efficient utilization of lignocellulosic biomass for biofuel production has received increasing attention. Previous studies have investigated the pretreatment Process of biomass, but the detailed enzymatic Hydrolysis Process of pretreated biomass remains largely unclear. Thus, this study investigated the pretreatment efficiency of dilute alkali, acid, hydrogen peroxide and its ultimate effects on enzymatic Hydrolysis. Furthermore, to better understand the enzymatic digestion Process of alkali-pretreated sweet sorghum straw (SSS), multimodal microscopy techniques were used to visualize the enzymatic Hydrolysis Process. After pretreatment with alkali, an enzymatic Hydrolysis efficiency of 86.44% was obtained, which increased by 99.54% compared to the untreated straw (43.23%). The FTIR, XRD and SEM characterization revealed a sequence of microstructural changes occurring in plant cell walls after pretreatment, including the destruction of lignin–polysaccharide interactions, the increase of porosity and crystallinity, and reduction of recalcitrance. During the course of Hydrolysis, the cellulase dissolved the cell walls in the same manner and the digestion firstly occurred from the middle of cell walls and then toward the cell wall corners. The CLSM coupled with fluorescent labeling demonstrated that the sclerenchyma cells and vascular bundles in natural SSS were highly lignified, which caused the nonproductive bindings of cellulase on lignin. However, the efficient delignification significantly increased the accessibility and digestibility of cellulase to biomass, thereby improving the saccharification efficiency. This work will be helpful in investigating the biomass pretreatment and its structural characterization. In addition, the visualization results of the enzymatic Hydrolysis Process of pretreated lignocellulose could be used for guidance to explore the lignocellulosic biomass Processing and large-scale biofuel production.
Miaoyin Dong - One of the best experts on this subject based on the ideXlab platform.
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Pretreatment of sweet sorghum straw and its enzymatic digestion: insight into the structural changes and visualization of Hydrolysis Process
Biotechnology for Biofuels, 2019Co-Authors: Miaoyin Dong, Fuqiang Xu, Qiaoqiao Li, Junkai Wang, Jihong Chen, Shuyang Wang, Ning Du Yang, Wenjian LiAbstract:BackgroundThe efficient utilization of lignocellulosic biomass for biofuel production has received increasing attention. Previous studies have investigated the pretreatment Process of biomass, but the detailed enzymatic Hydrolysis Process of pretreated biomass remains largely unclear. Thus, this study investigated the pretreatment efficiency of dilute alkali, acid, hydrogen peroxide and its ultimate effects on enzymatic Hydrolysis. Furthermore, to better understand the enzymatic digestion Process of alkali-pretreated sweet sorghum straw (SSS), multimodal microscopy techniques were used to visualize the enzymatic Hydrolysis Process.ResultAfter pretreatment with alkali, an enzymatic Hydrolysis efficiency of 86.44% was obtained, which increased by 99.54% compared to the untreated straw (43.23%). The FTIR, XRD and SEM characterization revealed a sequence of microstructural changes occurring in plant cell walls after pretreatment, including the destruction of lignin–polysaccharide interactions, the increase of porosity and crystallinity, and reduction of recalcitrance. During the course of Hydrolysis, the cellulase dissolved the cell walls in the same manner and the digestion firstly occurred from the middle of cell walls and then toward the cell wall corners. The CLSM coupled with fluorescent labeling demonstrated that the sclerenchyma cells and vascular bundles in natural SSS were highly lignified, which caused the nonproductive bindings of cellulase on lignin. However, the efficient delignification significantly increased the accessibility and digestibility of cellulase to biomass, thereby improving the saccharification efficiency.ConclusionThis work will be helpful in investigating the biomass pretreatment and its structural characterization. In addition, the visualization results of the enzymatic Hydrolysis Process of pretreated lignocellulose could be used for guidance to explore the lignocellulosic biomass Processing and large-scale biofuel production.
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Pretreatment of sweet sorghum straw and its enzymatic digestion: insight into the structural changes and visualization of Hydrolysis Process
Biotechnology for biofuels, 2019Co-Authors: Miaoyin Dong, Junkai Wang, Shuyang Wang, Ning Du Yang, Jihong ChenAbstract:The efficient utilization of lignocellulosic biomass for biofuel production has received increasing attention. Previous studies have investigated the pretreatment Process of biomass, but the detailed enzymatic Hydrolysis Process of pretreated biomass remains largely unclear. Thus, this study investigated the pretreatment efficiency of dilute alkali, acid, hydrogen peroxide and its ultimate effects on enzymatic Hydrolysis. Furthermore, to better understand the enzymatic digestion Process of alkali-pretreated sweet sorghum straw (SSS), multimodal microscopy techniques were used to visualize the enzymatic Hydrolysis Process. After pretreatment with alkali, an enzymatic Hydrolysis efficiency of 86.44% was obtained, which increased by 99.54% compared to the untreated straw (43.23%). The FTIR, XRD and SEM characterization revealed a sequence of microstructural changes occurring in plant cell walls after pretreatment, including the destruction of lignin–polysaccharide interactions, the increase of porosity and crystallinity, and reduction of recalcitrance. During the course of Hydrolysis, the cellulase dissolved the cell walls in the same manner and the digestion firstly occurred from the middle of cell walls and then toward the cell wall corners. The CLSM coupled with fluorescent labeling demonstrated that the sclerenchyma cells and vascular bundles in natural SSS were highly lignified, which caused the nonproductive bindings of cellulase on lignin. However, the efficient delignification significantly increased the accessibility and digestibility of cellulase to biomass, thereby improving the saccharification efficiency. This work will be helpful in investigating the biomass pretreatment and its structural characterization. In addition, the visualization results of the enzymatic Hydrolysis Process of pretreated lignocellulose could be used for guidance to explore the lignocellulosic biomass Processing and large-scale biofuel production.
Lan Yao - One of the best experts on this subject based on the ideXlab platform.
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comparative study of lignin characteristics from wheat straw obtained by soda aq and kraft pretreatment and effect on the following enzymatic Hydrolysis Process
Bioresource Technology, 2016Co-Authors: Haitao Yang, Yimin Xie, Xing Zheng, Fang Huang, Xianzhi Meng, Arthur J Ragauskas, Lan YaoAbstract:To understand the structural changes of lignin after soda-AQ and kraft pretreatment, milled straw lignin, black liquor lignin and residual lignin extracted from wheat straw were characterized by FT-IR, UV, GPC and NMR. The results showed that the main lignin linkages were β-aryl ether substructures (β-O-4′), followed by phenylcoumaran (β-5′) and resinol (β-β′) substructures, while minor content of spirodienone (β-1′), dibenzodioxocin (5-5′) and α,β-diaryl ether linkages were detected as well. After pretreatment, most lignin inter-units and lignin-carbohydrate complex (LCC) linkages were degraded and dissolved in black liquor, with minor amount left in residual pretreated biomass. In addition, through quantitative 13C and 2D-HSQC NMR spectral analysis, lignin and LCC were found to be more degraded after kraft pretreatment than soda-AQ pretreatment. Furthermore, the subsequent enzymatic Hydrolysis results showed that more cellulose in wheat straw was converted to glucose after kraft pretreatment, indicating that LCC linkages were important in the enzymatic Hydrolysis Process.
Ting Liu - One of the best experts on this subject based on the ideXlab platform.
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homogeneous mnox ceo2 pellets prepared by a one step Hydrolysis Process for low temperature nh3 scr
Powder Technology, 2014Co-Authors: Boxiong Shen, Fumei Wang, Ting LiuAbstract:Abstract To investigate the possibility of using a one-step Hydrolysis Process to prepare selective catalytic reduction (SCR) catalyst, a one-step Hydrolysis Process was introduced to fabricate the MnOx–CeO2 (HP) catalyst. Scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Brunauer–Emmett–Teller analysis (BET) were used to characterize the catalysts. The results showed that Mn, Ce and O were uniformly distributed on the bulk and the surface of MnOx–CeO2 pellets (MnOx–CeO2 (HP)). According to XPS analysis, manganese and cerium species co-existed in the oxidation states of Mn4 +/Mn3 + and Ce4 +/Ce3 + in the MnOx–CeO2 pellets. The BET and XRD results indicated that the interaction between Mn and Ce as “solid solution” occurred in MnOx–CeO2 (HP). It was demonstrated that the uniform MnOx–CeO2 pellets obtained via the Hydrolysis Process showed higher SCR activity than those prepared via co-precipitation (MnOx–CeO2 (CP)) and combustion (MnOx–CeO2 (CB)) in the temperature range of 80–260 °C. Uniform distribution of Mn and Ce, lower atomic binding energies, higher Mn4 +/Mn3 + ratio, higher Ce4 +/Ce3 + ratio, higher specific surface area, higher Oα/Oβ ratio and the defect in the “solid solution” resulted in higher NO conversion for MnOx–CeO2 (HP) than those for MnOx–CeO2 (CP) and MnOx–CeO2 (CB). Therefore, the one-step Hydrolysis Process is proven to be a good method for synthesizing MnOx–CeO2 for low-temperature SCR.
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Homogeneous MnOx–CeO2 pellets prepared by a one-step Hydrolysis Process for low-temperature NH3-SCR
Powder Technology, 2014Co-Authors: Boxiong Shen, Fumei Wang, Ting LiuAbstract:Abstract To investigate the possibility of using a one-step Hydrolysis Process to prepare selective catalytic reduction (SCR) catalyst, a one-step Hydrolysis Process was introduced to fabricate the MnOx–CeO2 (HP) catalyst. Scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Brunauer–Emmett–Teller analysis (BET) were used to characterize the catalysts. The results showed that Mn, Ce and O were uniformly distributed on the bulk and the surface of MnOx–CeO2 pellets (MnOx–CeO2 (HP)). According to XPS analysis, manganese and cerium species co-existed in the oxidation states of Mn4 +/Mn3 + and Ce4 +/Ce3 + in the MnOx–CeO2 pellets. The BET and XRD results indicated that the interaction between Mn and Ce as “solid solution” occurred in MnOx–CeO2 (HP). It was demonstrated that the uniform MnOx–CeO2 pellets obtained via the Hydrolysis Process showed higher SCR activity than those prepared via co-precipitation (MnOx–CeO2 (CP)) and combustion (MnOx–CeO2 (CB)) in the temperature range of 80–260 °C. Uniform distribution of Mn and Ce, lower atomic binding energies, higher Mn4 +/Mn3 + ratio, higher Ce4 +/Ce3 + ratio, higher specific surface area, higher Oα/Oβ ratio and the defect in the “solid solution” resulted in higher NO conversion for MnOx–CeO2 (HP) than those for MnOx–CeO2 (CP) and MnOx–CeO2 (CB). Therefore, the one-step Hydrolysis Process is proven to be a good method for synthesizing MnOx–CeO2 for low-temperature SCR.
Wenjian Li - One of the best experts on this subject based on the ideXlab platform.
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Pretreatment of sweet sorghum straw and its enzymatic digestion: insight into the structural changes and visualization of Hydrolysis Process
Biotechnology for Biofuels, 2019Co-Authors: Miaoyin Dong, Fuqiang Xu, Qiaoqiao Li, Junkai Wang, Jihong Chen, Shuyang Wang, Ning Du Yang, Wenjian LiAbstract:BackgroundThe efficient utilization of lignocellulosic biomass for biofuel production has received increasing attention. Previous studies have investigated the pretreatment Process of biomass, but the detailed enzymatic Hydrolysis Process of pretreated biomass remains largely unclear. Thus, this study investigated the pretreatment efficiency of dilute alkali, acid, hydrogen peroxide and its ultimate effects on enzymatic Hydrolysis. Furthermore, to better understand the enzymatic digestion Process of alkali-pretreated sweet sorghum straw (SSS), multimodal microscopy techniques were used to visualize the enzymatic Hydrolysis Process.ResultAfter pretreatment with alkali, an enzymatic Hydrolysis efficiency of 86.44% was obtained, which increased by 99.54% compared to the untreated straw (43.23%). The FTIR, XRD and SEM characterization revealed a sequence of microstructural changes occurring in plant cell walls after pretreatment, including the destruction of lignin–polysaccharide interactions, the increase of porosity and crystallinity, and reduction of recalcitrance. During the course of Hydrolysis, the cellulase dissolved the cell walls in the same manner and the digestion firstly occurred from the middle of cell walls and then toward the cell wall corners. The CLSM coupled with fluorescent labeling demonstrated that the sclerenchyma cells and vascular bundles in natural SSS were highly lignified, which caused the nonproductive bindings of cellulase on lignin. However, the efficient delignification significantly increased the accessibility and digestibility of cellulase to biomass, thereby improving the saccharification efficiency.ConclusionThis work will be helpful in investigating the biomass pretreatment and its structural characterization. In addition, the visualization results of the enzymatic Hydrolysis Process of pretreated lignocellulose could be used for guidance to explore the lignocellulosic biomass Processing and large-scale biofuel production.
