TY - JOUR
T1 - Effects of combined pretreatment with rod-milled and torrefaction on physicochemical and fuel characteristics of wheat straw
AU - Bai, Xiaopeng
AU - Wang, Guanghui
AU - Sun, Yue
AU - Yu, Yan
AU - Liu, Jude
AU - Wang, Decheng
AU - Wang, Zhiqin
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/11
Y1 - 2018/11
N2 - The mechanism of rod-milling combined with torrefaction as well as its effects on physicochemical and fuel properties of wheat straw were investigated. Rod-milling and hammer-milling samples were torrefied under three temperatures (250, 275, and 300 °C) with a duration time of 30 min. The results indicated that combined rod-milling and torrefaction pretreatment (CRT) significantly elevated carbon content, higher heating value, fuel ratio, and reduced oxygen content and atomic H/C and O/C ratios in wheat straw. Moreover, CRT significantly reduced cellulose crystallinity, and increased the specific surface area and pore volume of wheat straw, which lowered the wheat straw's degrading pyrolysis temperature. These peak values appeared under 300 °C. Devolatilization index (Di) was improved by rod-milling pretreatment under identical torrefaction conditions except 275 °C. Therefore, the combination of rod-milling with torrefaction under 300 °C has the advantage of enhancing fuel properties of lignocellulosic biomass materials.
AB - The mechanism of rod-milling combined with torrefaction as well as its effects on physicochemical and fuel properties of wheat straw were investigated. Rod-milling and hammer-milling samples were torrefied under three temperatures (250, 275, and 300 °C) with a duration time of 30 min. The results indicated that combined rod-milling and torrefaction pretreatment (CRT) significantly elevated carbon content, higher heating value, fuel ratio, and reduced oxygen content and atomic H/C and O/C ratios in wheat straw. Moreover, CRT significantly reduced cellulose crystallinity, and increased the specific surface area and pore volume of wheat straw, which lowered the wheat straw's degrading pyrolysis temperature. These peak values appeared under 300 °C. Devolatilization index (Di) was improved by rod-milling pretreatment under identical torrefaction conditions except 275 °C. Therefore, the combination of rod-milling with torrefaction under 300 °C has the advantage of enhancing fuel properties of lignocellulosic biomass materials.
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U2 - 10.1016/j.biortech.2018.07.022
DO - 10.1016/j.biortech.2018.07.022
M3 - Article
C2 - 30007237
AN - SCOPUS:85049749197
SN - 0960-8524
VL - 267
SP - 38
EP - 45
JO - Bioresource technology
JF - Bioresource technology
ER -
