CHEN Ming, WANG Zheng-kun, XIN Xin etc. Study on growth characteristics of microalgae biofilm based on hyperspectral imaging[J]. Editorial Office of Optics and Precision Engineering, 2017,25(10s): 39-45
CHEN Ming, WANG Zheng-kun, XIN Xin etc. Study on growth characteristics of microalgae biofilm based on hyperspectral imaging[J]. Editorial Office of Optics and Precision Engineering, 2017,25(10s): 39-45 DOI: 10.3788/OPE.20172513.0039.
Study on growth characteristics of microalgae biofilm based on hyperspectral imaging
To obtain the optimal environmental conditions for microalgae biofilm culture
the spectral information of the biofilms under different culture conditions including light intensity
pH value and temperature
were monitored online and in real time
using hyperspectral imaging technology. The characteristic variables of biofilm spectral characteristics were extracted
and the correlation coefficient between the characteristic variables and dry weight of the biofilms was calculated. Furthermore
the characteristic variables of the biofilms were normalized based on the quadratic function and were combined weight by using the exponential function
thus establishing the prediction model of biofilm growth process. Then the biofilm growth process was predicted by the established model. The results show that the optimal culture conditions of the biofilm were the temperature of 28℃
light intensity of 3 500 lx
and PH of 8; the mature biofilm
which will no longer grow
can be obtained under the optimized culture conditions after 7 days in culture. The growth characteristics of biofilm can be quickly and non-destructively monitored by the hyperspectral imaging method.
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references
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