2015 AQ Summit: Research Update by Peter Van Walsum

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1 The University of Maine Annual Maine Aquaculture R&D and Education Summits Conferences and Summits AQ Summit: Research Update by Peter Van Walsum Peter Van Walsum Follow this and additional works at: Part of the Aquaculture and Fisheries Commons Repository Citation Van Walsum, Peter, "2015 AQ Summit: Research Update by Peter Van Walsum" (2015). Annual Maine Aquaculture R&D and Education Summits This Presentation is brought to you for free and open access by It has been accepted for inclusion in Annual Maine Aquaculture R&D and Education Summits by an authorized administrator of For more information, please contact

2 What can chemical engineering do for aquaculture R&D? G. Peter van Walsum Department of Chemical and Biological Engineering Forest Bioproducts Research Institute

3 What is Chemical Engineering? Ú Designing processes that: separate, convert and purify raw materials into more valuable products Crude oil à fuels, lubricants, chemicals. Corn à starch, corn oil, ethanol, feed Ú Designing production of useful materials Adhesives Composites Pharmaceuticals Coatings Plastics Drug delivery

4 Diversity of Oil Refinery Products

5 Diversity of Corn Milling Products

6 Biorefinery: processing structural biomass material Fractionation Macro Algal biomass Polyols

7 Algefiber or pretreated kelp Acidogenic digestion Carboxylate platform Organic acids Hydrogen Mixed Carboxylate salts Ketones Alcohols Hydrocarbons Kelp pyrolysis, chemical treatments Esters

8 Algefiber: Mixed culture fermentation in Percolation columns Four columns contained within one temperature controlled box box.

9 Columns in series: counter-current Fresh solids Transfer liquid 1 week solids 1 week solids Transfer liquid 2 week solids Transfer liquid 3 week solids Fresh liquid Spent liquid

10 Counter current percolation fermentation Columns 10, 11, 12 achieved max titer of 14 g/l in two weeks

11 Kelp Ø One of the most abundant biomass sources in the world Ø Does not require land and freshwater resources Ø Grows faster than other biomass feedstocks Ø Easily harvested Ø Almost zero lignin Ø Long coast and cool water in Maine

12 Kelp fermentation results

13 Ketonization of Fermentation salts

14

15 Kelp conversion to Levulinic and Formic acids Product (g/l), or molar ratio formate : levulinate Carboxylate accumulation during batch acid hydrolysis of kelp time (min) of reaction at 220 C, 5% H2SO4 ttl acids non-acids Formic Acid Levulinic Acid M For/Lev other acids

16 FBRI Pilot plant and analytical capabilites

17 Chemical Reactors Ú TDO reactor, atmospheric pressure, high temperature (900 F), 50 L Ú Hodgins Reactor for extraction and pulping, 14 dry kg per run, up to 180 psig 16

18 Parr Chemical Reactors Ú 20 L Parr stirred reactor, up to 1800 psi, hastelloy C, acid hydrolysis, pulping Ú Parr Tubular Reactor, 2 OD. trickle bed reactor, Max temp.: 600 C - Max pressure: 6000 psi Flowrate: 40 ml/min. 17

19 Fermenters Ú SIP fermenter, 20L total volume, 15L working volume, automatic sterilization, temperature, agitation, D.O./pH and 4 fixed speed pumps. Ú 3 50 gallon anaerobic fermenters Ú One 40 L stainless steel fermenter Ú 4 Bioflo 110, shaker flasks 18

20 Concentration/Distillation Ú The CONVAP/ CONTHERM functions as a compact, scrapedsurface evaporator. Model: 6 x 4. Heating surface area: 4 sq. ft. Ú Rotovap System has 20 liter evaporating flask and two 10 liter receiving flasks. Ú Semi Automatic ASTM Fractional Batch Still, 2L batch 19

21 Separation Operations Ú Niro Automated Microfiltration Pilot Plant. A ceramic membrane microfiltration pilot plant designed for scale-up to full production, broth clarification, biomass clarification, and recovery. Ú CEPA Centrifuge, for harvesting biomass, clarifying process liquids, separating liquid products, processing of granular, crystalline and fibrous suspensions, and separation of filterable and non-filterable sludges. Ú Mixer-Settler for liquid liquid extraction Ú Liquid-liquid extraction column 20

22 FBRI Analytical Capability Chemical and Physical Testing - Large/µ-Scale Fully Equipped/Staffed Analytical Laboratory Gas & Liquid Chromatography Atomic & Molecular Spectroscopy Wet Chemical Characterization Analytical Method Development On-line FTIR capability Ion Chromatography Carbohydrate Analysis In-process & Final Product Material Characterization Fuels Chemicals Advanced Materials

23 Summary of macro algae derived products to date Ú Fermented algefiber and pretreated kelp to mixed carboxylatesà ketones, mixed alcohols Ú Acid hydrolysis of kelp to levulinic acid and formic acid.

24 Questions? G. Peter van Walsum Chemical and Biological Engineering University of Maine

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