کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8087084 | 1521816 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of photon flux density on algal biofilm growth and internal fatty acid concentrations
ترجمه فارسی عنوان
اثر چگالی شار فوتونی بر رشد بیوفیلم جلبک و غلظت اسید های چرب داخلی
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کلمات کلیدی
EPSPBRcpccPhotosynthetically active radiation - تابش فعال فتوسنتزیPar - توسطLight emitting diode - دیود ساطع نورLED - رهبریPhotobioreactor - فتوبیوراکتورFatty acid methyl ester - متیل استر اسید چربFAME یا fatty acid methyl esters - متیل استرهای اسید چربExtracellular polymeric substances - مواد پلیمری خارج سلولی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Algal biofilm systems offer potential advantages over planktonic systems for growing, harvesting and processing algal biomass. To determine how feasible these systems can be, however, researchers must determine optimal biomass and lipid productivities. In this paper the effect of photon flux density (PFD) on algal biofilm biomass productivities, internal fatty acid concentrations, and overall fatty acid productivity was studied. It was determined that as PFD increased, algal biofilm biomass productivities significantly increased until they peaked i.e. at about 300 μmol/m2/s, presumably due to light saturation. Increasing PFDs from 50 to 150 μmol/m2/s produced statistically significant increases in fatty acid concentrations from 5% to 8%; however, increasing PFDs beyond that range did not enhance lipid accumulation. Because of significant increases in biomass productivity with increased PFD, there was also a significant increase in fatty acid productivity with increased PFD. Lastly, increasing PFD resulted in diminishing returns of biomass productivity, suggesting that photons are not being effectively utilized at higher light intensities. This finding has implications for photobioreactor design and operation with artificial lighting.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Algal Research - Volume 16, June 2016, Pages 349-356
Journal: Algal Research - Volume 16, June 2016, Pages 349-356
نویسندگان
Peter J. Schnurr, George S. Espie, Grant D. Allen,