文献类型：期刊文献

英文题名：Investigation on models for light distribution of Haematococcus pluvialis during astaxanthin accumulation stage with an application case

作者：Sheng, Bin[1];Fan, Fei[2];Huang, Jianke[2];Bai, Wenmin[3];Wang, Jun[4];Li, Sulan[5];Li, Wei[1];Wan, Minxi[2];Li, Yuanguang[2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[3]Shangri La Zeyuan Algae Hlth Technol Co Ltd, Shangri La 674412, Peoples R China;[4]Baoshan Zeyuan Algae Hlth Technol Co Ltd, Baoshan 678208, Peoples R China;[5]Shanghai Zeyuan Marine Biotechnol Co Ltd, Shanghai 200237, Peoples R China

年份：2018

卷号：33

起止页码：182

外文期刊名：ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000438910600021)】；

基金：This research was funded by National High Technology Research and Development Program (863 Programs: 2015AA020602), High Level Scientific and Technological Talent Project of Yunnan (Grant No. 2015HD005), Shanghai Municipal Science and Technology Commission Project (Grant No. 16495800400), National Natural Science Foundation of China (Grant No. 31500062), Key Scientific and Technological Project of Shan Xi (Grant No. FT2014-01), and the Central Governmentguided Local Science and Technology Development Funds of Yunnan.

语种：英文

外文关键词：Light attenuation model; Haematococcus pluvialis; CFD; Induction experiment

摘要：Light is an important stress factor for astaxanthin accumulation in H. pluvialis. Hence, the light distribution in the H. pluvialis suspension was investigated with biomass concentration from 0.218 g/L to 2.5 g/L during the astaxanthin accumulation stage. Lambert-Beer model and Cornet model were employed to predict the light attenuation. The result showed that Cornet model could slightly better describe and predict the light distribution in H. pluvialis suspension. Besides, E-a (absorption coefficient) and E-s (scattering coefficient) were determined as 0.0126 +/- 0.0036 m(2)/g and 0.223 +/- 0.023 m(2)/g, respectively. E-s increased with respect to astaxanthin content, whereas E-a declined with the increase of astaxanthin content. The astaxanthin content was the dominant factor at a relatively low mass concentration of H. pluvialis suspension. Furthermore, experiments were carried out in a 3 L-bubble-column PBR (photobioreactor) and a 12 L-bubble-column PBR. Higher volume-averaged light intensity and lower shear stress in 3 L PBR led to 66.67% higher astaxanthin content and 34.48% higher mass concentration than those of 12 L PBR during the outdoor experiment, respectively.