Lumostatic operation of bubble column photobioreactors for Haematococcus pluvialis cultures using a specific light uptake rate as a control parameter
Lumostatic operation of bubble column photobioreactors for Haematococcus pluvialis cultures using a specific light uptake rate as a control parameter
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DOI：
10.1016/s0141-0229(03)00137-6
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发表时间：
2003-09-10
影响因子：
3.4
通讯作者：
Lee, CG
中科院分区：
文献类型：
--
作者：
Choi, SL;Suh, IS;Lee, CG
这项研究提出使用特定的光吸收速率(Q(E))作为控制参数的恒光操作，以保持理想的光条件。以鼓泡塔光生物反应器为模型系统，对雨生红球藻光自养培养进行了实验研究。在三种比吸光率水平(Q(E)=1.5×10(-8)、3×10(-8)和4.5×10(-8)mue cell(-1)S(-1))下进行定影手术，并与恒定光能供应(I-0=40、90和140mue m(-2)S(-1))进行比较。在4.5×10~(-8)Mue cell(~(-1))和S(~(-1))的恒定光照条件下，细胞浓度比恒定光能下提高250%以上，且不会引起虾青素的积累。对于Q(E)为3.0×10~(-8)Mue cell(~(-1))和S(~(-1))的稳光器，细胞浓度比对照实验提高了近200%。这些结果表明，比吸光率可以作为光生物反应器稳态运行的有用参数，根据比吸光率调节光条件可以大大提高营养生长期的生产力。(C)2003 Elsevier Inc.保留所有权利。
This study proposes lumostatic operations using a specific light uptake rate (q(e)) as a control parameter in order to maintain a desirable light condition. As a model system, bubble column photobioreactors have been operated lumostatically for photoautotrophic cultivations of Haematococcus pluvialis. Lumostatic operations were conducted at three levels of specific light uptake rates (q(e) = 1.5 x 10(-8), 3 x 10(-8), and 4.5 x 10(-8) muE cell(-1) s(-1)) and compared with constant light energy supply (I-0 = 40, 90, and 140 muE m(-2) s(-1)). In the case of the lumostatic operation at 4.5 x 10-8 muE cell(-1) s(-1), the cell concentration was enhanced over 250% than that obtained under constant light energy, without inducing astaxanthin accumulation. For the lumostat at q(e) of 3.0 x 10(-8) muE cell(-1) s(-1), the cell concentration increased almost 200% than that of the control experiments. These results indicate that a specific light uptake rate can be a useful parameter for lumostatic operation of photobioreactors and that the productivity of vegetative stage can be greatly improved by regulating the light condition based on the specific light uptake rates. (C) 2003 Elsevier Inc. All rights reserved.