Effects of Colloid Milling and Hot-Water Pretreatment on Physical Properties and Enzymatic Digestibility of Oak Wood
- Title
- Effects of Colloid Milling and Hot-Water Pretreatment on Physical Properties and Enzymatic Digestibility of Oak Wood
- Author
- KIM TAE HYUN
- Keywords
- fractionation; woody biomass; super-colloid mill; hydrothermal pretreatment; multi-step processing
- Issue Date
- 2022-03
- Publisher
- MDPI
- Citation
- Energies (19961073). Mar2022, Vol. 15 Issue 6, p2210-2210. 15p.
- Abstract
- A two-step process using colloid milling (CM) and hot water (HW) treatment was evaluated
for its ability to improve xylose recovery and the enzymatic digestibility of oak wood. In the first
step, CM pretreatment was applied at a milling (feeding) speed of 100 mL/min with four different
milling times (3, 6, 9, and 12 h), and the enzymatic digestibility and physical properties of each
substrate were measured. In the second-step, the HW pretreatment was applied to enhance the
enzymatic digestibility and xylan recovery at various reaction severities (Log R0
) from 2.07 to 4.43
using 12 h colloid-milled (CM-treated) oak wood. Compared with untreated oak wood, CM not only
significantly disrupted the structure of oak wood but also increased its Brunauer–Emmett–Teller
surface area (42-fold) and pore volume (28-fold). The crystallinity of two-step-treated oak wood
was decreased to 34.8, while the enzymatic digestibility of 12 h CM-treated oak wood was increased
to 58.1% at enzyme loading of 30 filter paper units (FPU)/g glucan for 96 h. After HW treatment
of CM-treated oak wood at Log R0 = 3.83, 80.7% of xylan recovery yield and 91.1% of enzymatic
digestibility (with 15 FPU/g glucan at 96 h) was obtained, which was 84.2% higher than the enzymatic
digestibility of untreated oak wood (6.9%).
- URI
- https://www.proquest.com/docview/2642375749?accountid=11283https://repository.hanyang.ac.kr/handle/20.500.11754/170796
- ISSN
- 1996-1073
- DOI
- 10.3390/en15062210
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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