کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
24544 43525 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Flat panel airlift photobioreactors for cultivation of vegetative cells of microalga Haematococcus pluvialis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Flat panel airlift photobioreactors for cultivation of vegetative cells of microalga Haematococcus pluvialis
چکیده انگلیسی

The novel flat panel airlift photobioreactor (FP-ALPBR) was proposed as an alternative system for the cultivation of Haematococcus pluvialis NIES-144. Changes in the efficiency of the system were tested in response to variations in two engineering parameters: the ratio between the downcomer and riser cross-sectional areas (Ad/Ar) and the size of the system (as determined by the length of the panel) and to one operating parameter: the superficial gas velocity (usg). The best growth performance was obtained by operating the system at a superficial velocity of 0.4 cm s−1 and with a downcomer-to-riser cross-sectional area ratio of 0.4. The 17-l FP-ALPBR system was capable of giving reasonable growth characteristics with a maximum cell density of 4.1 × 105 cell ml−1 and specific growth rate of 0.52 day−1 being achieved. A similar level of performance was obtained from the 90-l FP-ALPBR system, i.e., cell density = 40 × 104 cell ml−1 but with a slight decrease in specific growth rate to 0.39 day−1. The performances of these two differently sized FP-ALPBRs were compared with two conventional cylindrical airlift photobioreactors (C-ALPBRs) of different dimensions. The 90-l FP-ALPBR exhibited reasonably good performance when compared with the two 17-l systems (both C- and FP-ALPBRs); however, the best growth rate was observed using the 3-l C-ALPBR. Semi-continuous cultures, which could be periodically harvested at a reasonably high growth rate, were successfully created. Of all the systems investigated in this study, the 90-l FP-ALPBR was found to be the most cost-effective, as it could cultivate 18 g of alga for approximately US$ 21.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biotechnology - Volume 142, Issues 3–4, 15 July 2009, Pages 227–232
نویسندگان
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