Bioproducts from Dissolving Pulp Manufacturing

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. FPInnovations: Largest National Integrated Forest Research Institute . Paprican (mash

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Bioproducts from Dissolving Pulp Manufacturing January 13, 2009 Michael Paice

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FPInnovations: Largest National Integrated Forest Research Institute Paprican (mash & paper), Forintek (wood fabricating), FERIC (logging) and Canadian Fiber Center Member-based research program is supplemented by contract explore and counseling for organizations around the globe Bioenergy and biorefinery research is to a great extent directed out of our two mash & paper offices Paprican - 228 researchers and professionals, 15 FTEs on biorefinery look into Paprican Pointe Claire, QC Paprican Vancouver, BC

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Canadian Market Kraft Industry Ten out of 43 kraft factories have shut in the most recent four years Remaining plants need to broaden their item portfolio Dissolving mash from pre-hydrolysis kraft process is set up innovation Presents a chance to make utilization of hemicellulose stream

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Spent Liquor EVAPORATORS RECOVERY FURNACE Cooking RECAUSTICIZING Liquor PLANT Potential Chemical Products from Kraft Mill Pulp BLEACH WOOD BROWNSTOCK DIGESTER(S) PLANT SUPPLY WASHING PULP DRYER or Wood Chip Prehydrolysis PAPER MACHINE PULP Prehydrolyzed Wood Chips Xylitol Furfural Ethanol Separation Stage Xylose Sugar oligomers Acetic corrosive Phenolics Prehydrolyzate

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Hardwood Prehydrolysis Kraft What are the ideal prehydrolysis conditions? Must create mash to meet client determinations Maximize side effect stream yield and focus What items are in the underlying prehydrolyzate? Will they be utilized without further change or detachment? What are the potential item showcases? What innovation can be utilized to deliver attractive items?

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Characterization of Kraft Prehydrolyzates Sugars: Monosaccharides : arabinose, xylose, mannose galactose, glucose. Oligosaccharides : galactoglucomannan, glucuronoxylan, and so on. Other synthetic mixes: Acetic corrosive Furfural, Hydroxymethylfurfural (HMF) Phenolic mixes

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Major Sugar from Hardwoods More than 10% of wood can be recouped as xylose

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Some Conversion of Xylose to Furfural

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Options for the Prehydrolyzate The prehydrolyzate stream can be utilized as a feedstock to: The factory recuperation cycle for the creation of steam and power, however this breaking points mash generation An aging plant for the generation of ethanol A chromatographic/crystallization framework for the decontamination of xylose and xylitol A further corrosive treatment to deliver furfural

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Ethanol Price and Market Size Price right now managed by cost of corn and barrel of oil Market estimate: 64 billion L/y by 2022 (US target) Typical prehydrolysis kraft plant could create around 25 million L/y Assumes that significant sugar item (xylose) can be proficiently aged

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Pentose-Fermenting Yeasts Pentose-maturing yeasts were found in 1981-1982 by Canadian Henry Schneider Problems still exist: Glucose and mannose will be utilized specially over xylose and arabinose Low ethanol resilience Sensitive to different inhibitors found in lignocellulosic substrates Working with U Concordia/Guelph to enhance strains: Saccharomyces cerevisiae: traditional mutagenesis or xylose isomerase expression. Pichea stipitis: mutagenesis or genome rearranging

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Xylitol - anticariogenic sweetener Largest maker is Danisco Current (2000) world market estimate for polyols is 1.4 million tons (US$1.6 billion) Xylose is cleaned by chromatography and crystallization, then hydrogenated to xylitol H 2

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Furfural Produced by corrosive drying out of xylose + H furfural xylose

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Market Size for Furfural Global creation in 2001 was 225,000 tons Most furfural is presently delivered in China, where limit is 150,000-200,000 tons/y Prices have fallen in the course of the most recent 20 years from $1740/ton in 1990 to ~ $1000/ton today A 1000 ton/d hardwood kraft mash factory could deliver around 90 tons/d of xylose If all the xylose is changed over to furfural such a plant will have the capability of delivering 27500 tons/y Several hardwood kraft factories exist in Canada and the North Eastern piece of the US

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Current Focus at FPInnovations Working with dissolving mash plant to actualize bioproduct enhancement Investigating conceivable outcomes for transformation of other kraft factories Looking at new items in view of examination of hydrolyzates Separation and transformation advances are required Market measure must be suitable for plant limit

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The Future Biorefinery … .in light of the kraft process?