The influence of pre-steaming and lignin distribution on wood pellet robustness and ease of subsequent enzyme-mediated cellulose hydrolysis

2021 ◽  
Author(s):  
Masatsugu Takada ◽  
John N. Saddler
Keyword(s):  
Cellulose Hydrolysis ◽  
Wood Pellet ◽  
Lignin Distribution

We studied the influence of pre-steaming and lignin distribution on wood pellet robustness and ease of subsequent enzyme-mediated hydrolysis.

Pollutant emission from a heat station supplied with agriculture biomass and wood pellet mixture

2012 ◽  
Vol 33 (2) ◽  
pp. 231-242 ◽  
Author(s):  
Marek Juszczak ◽  
Katarzyna Lossy
Keyword(s):  
Carbon Monoxide ◽  
Pollutant Emission ◽  
Heat Output ◽  
Wood Pellets ◽  
Wood Pellet ◽  
Carbon Monoxide Concentration ◽  
Heat Efficiency ◽  
Air Stream ◽  
Fuel Mixtures ◽  
Lower Carbon

Pollutant emission from a heat station supplied with agriculture biomass and wood pellet mixtureTests for combustion of hay and sunflower husk pellets mixed with wood pellets were performed in a horizontal-feed as well as under-feed (retort) wood pellet furnace installed in boilers with a nominal heat output of 15 and 20 kW, located in a heat station. During the combustion a slagging phenomenon was observed in the furnaces. In order to lower the temperature in the furnace, fuel feeding rate was reduced with unaltered air stream rate. The higher the proportion of wood pellets in the mixture the lower carbon monoxide concentration. The following results of carbon monoxide concentration (in mg/m3presented for 10% O2content in flue gas) for different furnaces and fuel mixtures (proportion in wt%) were obtained: horizontal-feed furnace supplied with hay/wood: 0/100 - 326; 30/70 - 157; 50/50 - 301; 100/0 - 3300; horizontal-feed furnace supplied with sunflower husk/wood: 50/50 - 1062; 67/33 - 1721; 100/0 - 3775; under-feed (retort) furnace supplied with hay/wood: 0/100 - 90; 15/85 - 157; 30/70 - 135; 50/50 - 5179; under-feed furnace supplied with sunflower husk/wood: 67/33 - 2498; 100/0 - 3128. Boiler heat output and heat efficiency was low: 7 to 13 kW and about 55%, respectively, for the boiler with horizontal-feed furnace and 9 to 14 kW and 64%, respectively, for the boiler with under-feed furnace.

Effect of Rhodococcus sp. pretreatment on cellulose hydrolysis of corn stalk

2020 ◽  
pp. 1-7
Author(s):  
Pan Hu ◽  
Huanan Li ◽  
Wenjing Xiao ◽  
Xiaohang Xie ◽  
Yuxian Yang ◽  
...  
Keyword(s):  
Cellulose Hydrolysis ◽  
Corn Stalk ◽  
Hydrolysis Of ◽  
Rhodococcus Sp

scholarly journals Respiratory symptoms and lung function in relation to wood dust and monoterpene exposure in the wood pellet industry

2017 ◽  
Vol 122 (2) ◽  
pp. 78-84 ◽  
Author(s):  
Håkan Löfstedt ◽  
Katja Hagström ◽  
Ing-Liss Bryngelsson ◽  
Mats Holmström ◽  
Anna Rask-Andersen
Keyword(s):  
Lung Function ◽  
Respiratory Symptoms ◽  
Wood Dust ◽  
Wood Pellet

5331943 Wood pellet stove

1995 ◽  
Vol 21 (3) ◽  
pp. XVIII
Author(s):  
Ko Wen-Hsiung ◽  
Fong Yuan ◽  
Taichung Hsien
Keyword(s):  
Wood Pellet

Rational Design of Solid-Acid Catalysts for Cellulose Hydrolysis Using Colloidal Theory

2021 ◽  
Author(s):  
Ziyang Zhang ◽  
Geoffrey A Tompsett ◽  
Christopher Lambert ◽  
Sergio Granados-Focil ◽  
Michael T. Timko
Keyword(s):  
Rational Design ◽  
Solid Acid ◽  
Molecular Level ◽  
Cellulose Hydrolysis ◽  
Solid Acid Catalysts ◽  
Acid Catalysts

Solid-acid catalysts functionalized with catalytic groups have attracted intense interests for hydrolyzing cellulose into fermentable compounds. However, the solid-acid catalysts design has been guided by molecular level of interactions and...

Cellulase-Inspired Solid Acids for Cellulose Hydrolysis: Structural Explanations for High Catalytic Activity

ACS Catalysis ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 1464-1468 ◽  
Author(s):  
Maksim Tyufekchiev ◽  
Pu Duan ◽  
Klaus Schmidt-Rohr ◽  
Sergio Granados Focil ◽  
Michael T. Timko ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Cellulose Hydrolysis ◽  
Solid Acids ◽  
High Catalytic Activity

Lignin distribution in waterlogged archaeological Picea abies (L.) Karst degraded by erosion bacteria

Holzforschung ◽  
2014 ◽  
Vol 68 (7) ◽  
pp. 791-798 ◽  
Author(s):  
Nanna Bjerregaard Pedersen ◽  
Uwe Schmitt ◽  
Gerald Koch ◽  
Claus Felby ◽  
Lisbeth Garbrecht Thygesen
Keyword(s):  
Picea Abies ◽  
Lignin Content ◽  
Middle Lamella ◽  
Uv Absorbance ◽  
Tem Analysis ◽  
Lignin Distribution ◽  
Transmission Electron ◽  
Residual Material ◽  
Ray Parenchyma Cells ◽  
Very High

Abstract The lignin distribution in poles of waterlogged archaeological Picea abies (L.) Karst, which was decayed by erosion bacteria (EB) under anoxic conditions for approximately 400 years, was topochemically identified by transmission electron microscopy (TEM) and high resolution UV-microspectrophotometry (UMSP). Lignin rich cell wall compartments such as cell corner (CC), compound middle lamella (CML), torus, initial pit border and mild compression wood (CW) appeared morphologically well preserved together with S1 and S3 layers and epithelial and ray parenchyma cells. Residual material (RM) from degraded S2 showed a varied lignin distribution as evidenced by the different local UV-absorbance intensities. However, evaluation of UV-absorbance line spectra of RM revealed no change in conjugation of the aromatic ring system. Presence of RM with both very low and very high lignin absorbances showed evidence for disassembly of lignin during degradation combined with aggregation of lignin fragments and physical movement of these fractions. In contrast to TEM analysis, locally decreasing lignin content was found by UMSP in CML regions.

Sign in / Sign up

Export Citation Format

Share Document