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Presentación Algas

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  • 1. Environmental and Energy Potential of ATS Algal Systems
  • 2. Algal Turf Scrubber basal algal mesh ready for harvest » C:Documents and.jpg SettingsadeywDesktop3689
  • 3. Florida ATS on Farm Canal (Fresh Water Algal Turf) 22 abundant species of: Green Algae Red Algae Brown Algae (diatoms) Blue Green Algae (Cyanobacteria) Keystone Species Cladophora crispata Enteromorpha micrococca Compsopogon coeruleus Spirogyra rivularis Melosira spp. Eunotia pectinalis
  • 4. Algal Turf Scrubbers (ATS)  Attached algae/ Many species/ Several algal groups  Applied biomimicry  Multiple benefits: environment/energy/materials  Mature Technology: Operating to 10acre systems today Designed to 1440 acre systems for tomorrow Modular: any size possible next year
  • 5. S-154 System: ATS test system of 2.5 acres, for processing 10-20 Mgpd of farm stream water
  • 6. ATS Biomass Potential 35g (dry)/m2/day 3-6g (dry)/m2/day
  • 7. Some diatoms are composed of 60% triglycerides by mass and grow in 3 days
  • 8. Professor Steven Bertman Dept. of Chemistry Western Michigan University “No more BTUs down the drain”
  • 9. Lower N & P, Nutrient-rich Elevated DOC water in water ATS triglycerides Algae biomass biodiesel Starches and cellulose Butanol
  • 10. Biofuels: Investigation of Algal Turf at Taylor Creek as Biodiesel feedstock Gas chromatograph of algal turf oils (fatty acid methyl esters) FID1 A, (E07423.660A0035730.D) 1.691 10.793 pA 18 13.953 7.534 16 • Analysis of algal turf ‘oil’ 10.215 14 composition 12 10.486 – Fatty-acids are examined 10 13.822 8 using ‘FAME’ analysis; Gas 16.902 10.041 10.100 13.700 11.574 10.428 13.285 6 14.141 16.768 11.221 Chromatograph (FID) 11.072 4.463 20.289 10.966 10.326 13.085 19.848 4.945 14.699 10.639 10.716 8.513 12.791 13.569 9.768 8.227 7.279 7.013 4 – Results: 5 10 15 20 • Major oil components in Temporal Dynamics of Fatty Acid Composition of Algal Turf (components algal turf relatively stable > 5.0%) over the three months 35 • Most fatty acids in C14-C18 30 FA composition percentage range 25 • Often correspond to 20 March April common animal and 15 May vegetable oils 10 • Need to further 5 characterize several peaks 0 14:0-Myristic acid Unknown (C12 16:1 w7c 16:0 (palmitic acid, 18:2 w6c (linoleic 18:1 w8c/18:3 w3c alcohol?) palm oil) acid) (oleic, linolenic acids) • Small scale oil extraction performed – Initial, small scale extraction methods successful at oil isolation – targeted oils were recovered based on GC- ‘FAME’ analysis
  • 11. Climate Benefits of ATS • Uptake of atmospheric CO2 at 16-30 tons of C /ac/yr, or 60-110 tons of CO2 ac/yr Can be engineered to sequester smokestack CO2 emissions • Doesn’t require agro-industrial fertilizers, and thus side-steps the atmospheric/water pollution consequences of oil production from traditional agriculture
  • 12. Water Quality Benefits of ATS • Strips N & P from lakes, rivers and other waterbodies from eutrophic to ppb levels • Removes heavy metals • Breaks-down toxic organic compounds • Supersaturates water with O2 • Creates conditions to increase biodiversity
  • 13. ATS: Biofuel Potential • 1 acre produces 140kg of dry biomass / day • 10 - 50% diatoms • Of this, 15-20gpd biofuel can be produced per acre • Volatile solids average 45-55% • 40% conversion, biodiesel plus butanol