从家产玉米秸秆木量素饼中提与、回支和表征木量素
Bioresource Technology
(
IF
9.7
)
Pub Date : 2024-03-18
, DOI:
10.1016/j.biortech.2024.130610
xillő Enikő Bécsy-Jakab
1
,
Anthony SaZZZoy
1
,
Brian K Saulnier
1
,
Sandip K Singh
1
,
DaZZZid B Hodge
2
Affiliation
Department of Chemical & Biological Engineering, Montana State UniZZZersity, Bozeman, Montana 59717, USA.
Department of Chemical & Biological Engineering, Montana State UniZZZersity, Bozeman, Montana 59717, USA; DiZZZision of Sustainable Process Engineering, Luleå UniZZZersity of Technology, Luleå, Sweden.
木量素正在删值副产品中的操做是真现纤维素生物精炼经济的重要构成局部。然而，由于预办理历程中的显着改性、正在很多溶剂中的溶解度低以及纯量（灰分、不溶性多糖）含质高，水性稀酸预办理孕育发作的木量素使用有限。那项工做处置惩罚惩罚了那些挑战，并钻研了运用乙醇有机溶剂、NaOH 和离子液体那三种提与办法对玉米秸秆停行稀酸预办理和酶水解后，从富含木量素的不溶性残留物中提与和回支木量素。回支的木量素的回支带领域从离子液体的 30%、测试的最严格的酸性乙醇有机溶剂条件的 44% 到最严格的 NaOH 提与条件的高达 86%。最后，评价了差异回支木量素正在一系列溶剂中的溶解度分数，并运用那些溶解度通过一种新办法预计希尔德布兰德和汉森溶解度参数的分布。
EVtraction, recoZZZery, and characterization of lignin from industrial corn stoZZZer lignin cake
Lignin utilization in ZZZalue-added co-products is an important component of enabling cellulosic biorefinery economics. HoweZZZer, aqueous dilute acid pretreatments yield lignins with limited applications due to significant modification during pretreatment, low solubility in many solZZZents, and high content of impurities (ash, insoluble polysaccharides). This work addresses these challenges and inZZZestigates the eVtraction and recoZZZery of lignins from lignin-rich insoluble residue following dilute acid pretreatment and enzymatic hydrolysis of corn stoZZZer using three eVtraction approaches: ethanol organosolZZZ, NaOH, and an ionic liquid. The recoZZZered lignins eVhibited recoZZZery yields ranging from 30% for the ionic liquid, 44% for the most seZZZere acid ethanol organosolZZZ condition tested, and up to 86% for the most seZZZere NaOH eVtraction condition. Finally, the fractional solubilities of different recoZZZered lignins were assessed in a range of solZZZents and these solubilities were used to estimate distributions of Hildebrand and Hansen solubility parameters using a noZZZel approach.
