Improving Sugar Yields and Reducing Enzyme Loadings in the Deacetylation and Mechanical Refining (DMR) Process through Multistage Disk and Szego Refining and Corresponding Techno-Economic Analysis

Chen, Xiaowen; Wang, Wei; Ciesielski, Peter; Trass, Olev; Park, Sunkyu; Tao, Ling; Tucker, Melvin P.

doi:10.1021/acssuschemeng.5b01242

Title: Improving Sugar Yields and Reducing Enzyme Loadings in the Deacetylation and Mechanical Refining (DMR) Process through Multistage Disk and Szego Refining and Corresponding Techno-Economic Analysis

Journal Article · Wed Dec 02 00:00:00 EST 2015 · ACS Sustainable Chemistry & Engineering

DOI:https://doi.org/10.1021/acssuschemeng.5b01242· OSTI ID:1227578

Chen, Xiaowen ^[1]; Wang, Wei ^[2]; Ciesielski, Peter ^[2]; Trass, Olev ^[3]; Park, Sunkyu ^[4]; Tao, Ling ^[1]; Tucker, Melvin P. ^[1]

National Bioenergy Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States
Bioscience Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States
Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, Ontario M5S 3E5, Canada
Department of Forest Biomaterials, North Carolina State University, 2820 Faucette Drive, Campus box 8005, Raleigh, North Carolina 27695, United States

Deacetylation and mechanical refining (DMR) has the potential to be a highly efficient biochemical conversion process for converting biomass to low toxicity, high concentration sugar streams. To increase the cost-effectiveness of the DMR process, improvements in enzymatic sugar yields are needed, in addition to reducing the refining energy consumed, and decreasing the enzyme usage. In this study, a second refining step utilizing a Szego mill was introduced, resulting in significant improvements in sugar yields in enzymatic hydrolysis at equivalent or lower refining energy inputs. The multistage DMR process increased the monomeric glucose and xylose yields to approximately 90% and 84%, respectively, with an energy consumption of 200 kWh/ODMT. SEM imaging revealed that Szego milling caused significant surface disruption and severe maceration and delamination of the biomass structure. Our results show that the DMR process is a very promising process for the biorefinery industry in terms of economic feasibility.

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Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE); NREL (National Renewable Energy Laboratory (NREL), Golden, CO (United States))

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1227578

Alternate ID(s):: OSTI ID: 1235670

Report Number(s):: NREL/JA-5100-64773

Journal Information:: ACS Sustainable Chemistry & Engineering, Journal Name: ACS Sustainable Chemistry & Engineering Vol. 4 Journal Issue: 1; ISSN 2168-0485

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 31 works

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Related Subjects

09 BIOMASS FUELS
59 BASIC BIOLOGICAL SCIENCES
biorefinery
pretreatment
biomass saccharification
mechanical refining
Szego milling
PFI milling
disk refining
plant derived food
peptides and proteins
carbohydrates
biomass
energy
deacetylation
alkaline pretreatment
ethanol
sugar
techno-economic analysis

Title: Improving Sugar Yields and Reducing Enzyme Loadings in the Deacetylation and Mechanical Refining (DMR) Process through Multistage Disk and Szego Refining and Corresponding Techno-Economic Analysis

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