Presentación Algas

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Presentación Algas

  1. 1. Environmental and Energy Potential of ATS Algal Systems
  2. 2. Algal Turf Scrubber basal algal mesh ready for harvest » C:Documents and.jpg SettingsadeywDesktop3689
  3. 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. 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. 5. S-154 System: ATS test system of 2.5 acres, for processing 10-20 Mgpd of farm stream water
  6. 6. ATS Biomass Potential 35g (dry)/m2/day 3-6g (dry)/m2/day
  7. 7. Some diatoms are composed of 60% triglycerides by mass and grow in 3 days
  8. 8. Professor Steven Bertman Dept. of Chemistry Western Michigan University “No more BTUs down the drain”
  9. 9. Lower N & P, Nutrient-rich Elevated DOC water in water ATS triglycerides Algae biomass biodiesel Starches and cellulose Butanol
  10. 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. 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. 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. 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

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