Molybdenum-Catalyzed Hydrogenolysis of Herbaceous Biomass: A Procedure Integrated Lignin Fragmentation and Components Fractionation

2021 ◽  
pp. 124977
Author(s):  
Xue Gong ◽  
Jiankui Sun ◽  
Xiangya Xu ◽  
Bo Wang ◽  
Helong Li ◽  
...  
Keyword(s):  
Herbaceous Biomass

Structures and pyrolytic characteristics of organosolv lignins from typical softwood, hardwood and herbaceous biomass

2021 ◽  
Vol 171 ◽  
pp. 113912
Author(s):  
Ti-Peng Wang ◽  
Hang Li ◽  
Jiang-Meng Yuan ◽  
Wen-Xin Li ◽  
Kai Li ◽  
...  
Keyword(s):  
Herbaceous Biomass

scholarly journals Assessment of Perennial Grass Inventories Predicted in the Billion-Ton Studies

2018 ◽  
Vol 61 (2) ◽  
pp. 331-340 ◽  
Author(s):  
Daniela Sofia Jones ◽  
Stephen W. Searcy ◽  
Laurence M. Eaton
Keyword(s):  
Perennial Grass ◽  
Geographical Location ◽  
Department Of Energy ◽  
Modeling Framework ◽  
Local Conditions ◽  
Herbaceous Biomass ◽  
Precipitation Total ◽  
Cropland Conversion ◽  
Biomass Availability ◽  
The U.S

Abstract. The U.S. Department of Energy (DOE) has estimated herbaceous biomass availability through simulations with the Policy Analysis System (POLYSYS) agricultural modeling framework. An operational assumption for POLYSYS limited conversion of pastureland to perennial grass crops to counties east of the 100th meridian as a proxy for precipitation sufficient for economically viable yield, but allowed cropland conversion regardless of location. Knowledge of local conditions raised questions about predicted biomass quantities for Texas counties in the 2011 assessment. POLYSYS was rerun with different assumptions, specifically replacing the 100th meridian boundary with annual average precipitation data and limiting cropland conversion in low-rainfall counties. Perennial grass production was found to be overestimated by 8% and 87% in the U.S. and Texas, respectively (at $66.14 DMg-1), when limiting all land conversion to regions with >635 mm precipitation. Total herbaceous biomass predicted was approximately the same as in the BT2, but the biomass geographical location changed across the nation. Texas’ biomass contribution decreased from 6% to 1% at $66.14 DMg-1 and from 16% to 11% at $88.18 DMg-1. Subsequent to this research being conducted, the DOE released the 2016 biomass inventory assessment, and these results are compared to those newest estimates. Keywords: Billion-Ton Study, Biomass, Perennial grass, Precipitation, Switchgrass.

Water leaching of herbaceous biomass bales to reduce sintering and corrosion

Fuel ◽  
2022 ◽  
Vol 312 ◽  
pp. 122744
Author(s):  
Miguel J. Fernández ◽  
Veronika Chaloupková ◽  
Ruth Barro
Keyword(s):  
Water Leaching ◽  
Herbaceous Biomass

scholarly journals Heat-emission analysis of small combustion equipments for biomass

2011 ◽  
Vol 57 (No. 2) ◽  
pp. 37-50 ◽  
Author(s):  
J. Malaťák ◽  
L. Passian
Keyword(s):  
Hydrogen Chloride ◽  
Thermal Emission ◽  
Calorific Value ◽  
Heat Emission ◽  
Heat Output ◽  
Emission Analysis ◽  
Stoichiometric Analysis ◽  
Herbaceous Biomass ◽  
Elemental Analyses ◽  
Selection Of

The article addresses the urgent questions regarding the use of biomass as a fuel for combustion equipment of the heat output up to 25 kW. The article is based on the determined elemental analyses of six samples of fuel taken both from the wood mass and herbaceous biomass. These samples underwent the stoichiometric analysis of fuels. After the stoichiometric analysis the heat-emission characteristics were determined on two combustion equipments. The results of carried out elemental and stoichiometric analyses indicate higher values of nitrogen, sulphur and chlorine concentration in herbaceous biomass from agriculture compared to the analyzed wood mass. The selection of combustion equipment is particularly influenced by increased contents of sulphur and chlorine (corrosive behaviour). The net calorific value of the analyzed samples taken from the wood mass is higher than of samples taken from the herbaceous biomass. The net calorific value of fuels from herbaceous biomass is reduced due to a higher content of ashes in the fuel. The results of thermal-emission analyses show higher values of nitrogen oxides, sulphur and chlorine concentrations in the herbaceous biomass compared to the analyzed wood mass. The emission concentrations of carbon monoxide for wood fuels and herbaceous biomass also depend on the type of combustion equipment and setting of combustion air volume. The increased emissions of hydrogen chloride generated by various combustion equipments are primarily caused by the volume of combustion air and the amount of chlorine in the fuel itself. The higher the volume of combustion air brought into the combustion chamber is, the higher the emissions of hydrogen chloride are. Based on the analyses we can also draw a conclusion that the spaces of combustion equipment during combustion should be most burdened with the herbaceous biomass.

Evaluation of Two Forage Harvesting Systems for Herbaceous Biomass Harvesting

2012 ◽  
Vol 55 (5) ◽  
pp. 1651-1658 ◽  
Author(s):  
D. K. Brownell ◽  
J. Liu ◽  
J. W. Hilton ◽  
T. L. Richard ◽  
G. R. Cauffman ◽  
...  
Keyword(s):  
Herbaceous Biomass ◽  
Biomass Harvesting ◽  
Harvesting Systems

scholarly journals Comparing the Physicochemical Properties of Upgraded Biomass Fuel by Torrefaction and the Ashless Technique

2019 ◽  
Vol 9 (24) ◽  
pp. 5519 ◽  
Author(s):  
Lkhagvadorj Sh ◽  
Byoung-Hwa Lee ◽  
Young-Joo Lee ◽  
Chung-Hwan Jeon
Keyword(s):  
Physicochemical Properties ◽  
Chemical Properties ◽  
High Heating Rate ◽  
Pine Sawdust ◽  
Herbaceous Biomass ◽  
High Heating ◽  
Pitch Pine ◽  
Proximate And Ultimate Analysis ◽  
Physical And Chemical ◽  
And Chemical Properties

The purpose of this study was to investigate and compare the influence of torrefaction and an ashless process on the physical and chemical properties of pitch pine sawdust (PSD) and kenaf as types of woody and herbaceous biomass. The physicochemical properties of the materials pretreated by the ashless process with torrefaction including proximate and ultimate analysis, hydrophobicity, grindability, morphology, and structure were analyzed. The results showed that when ashless Kenaf was torrefied, the high heating rate and atomic ratios of O/C and H/C increased. The tendency of the torrefied, ashless Kenaf to absorb water decreased, and it became more hydrophobic (approximately 0% for the uptake rate of moisture). In addition, the grindability of the torrefied, ashless Kenaf was substantially improved compared to that of pretreated PSD. Brunauer–Emmett–Teller and scanning electron microscopy results showed that when Kenaf was pretreated, particles easily lost their fibrous structure and cracked as the number of macropores decreased. These results indicate that the herbaceous biomass of Kenaf, when pretreated with both torrefaction and the ashless process, exhibits improved physicochemical properties compared to the woody PSD.

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