Effect of temperature control on green algae grown under continuous culture

Knutson, Carolann M.; McLaughlin, Evelyn M.; Barney, Brett M.

doi:10.1016/j.algal.2018.08.020

Cited by 13 publications

(7 citation statements)

References 20 publications

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“…The range of optimal temperature varies depending on the species, however, most of the microalgae species have an optimum temperature in a range of 20–30 °C 20 . Determination of optimal temperature is crucial to ensure the survival of selected microalgae during outdoor cultivation as it will be exposed to a large fluctuation in temperature and excessive heat will create shear stress that can disrupt microalgae cell wall 34 , 35 . The optimum range for Isochrysis sp.…”

Section: Resultsmentioning

confidence: 99%

Screening of native microalgae species for carbon fixation at the vicinity of Malaysian coal-fired power plant

Yahya

Harun

Abdullah

2020

Sci Rep

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Global warming has become a serious issue nowadays as the trend of CO2 emission is increasing by years. In Malaysia, the electricity and energy sector contributed a significant amount to the nation’s CO2 emission due to fossil fuel use. Many research works have been carried out to mitigate this issue, including carbon capture and utilization (CCUS) technology and biological carbon fixation by microalgae. This study makes a preliminary effort to screen native microalgae species in the Malaysian coal-fired power plant’s surrounding towards carbon fixation ability. Three dominant species, including Nannochloropsis sp., Tetraselmis sp., and Isochrysis sp. were identified and tested in the laboratory under ambient and pure CO2 condition to assess their growth and CO2 fixation ability. The results indicate Isochrysis sp. as the superior carbon fixer against other species. In continuation, the optimization study using Response Surface Methodology (RSM) was carried out to optimize the operating conditions of Isochrysis sp. using a customized lab-scale photobioreactor under simulated flue gas exposure. This species was further acclimatized and tested under actual flue gas generated by the power plant. Isochrysis sp. had shown its capability as a carbon fixer with CO2 fixation rate of 0.35 gCO2/L day under actual coal-fired flue gas exposure after cycles of acclimatization phase. This work is the first to demonstrate indigenous microalgae species' ability as a carbon fixer under Malaysian coal-fired flue gas exposure. Thus, the findings shall be useful in exploring the microalgae potential as a biological agent for carbon emission mitigation from power plants more sustainably.

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Section: Resultsmentioning

confidence: 99%

Screening of native microalgae species for carbon fixation at the vicinity of Malaysian coal-fired power plant

Yahya

Harun

Abdullah

2020

Sci Rep

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“…Meteorological, water quality, and human activities data of Lake Dianchi were collected and analyzed in this study [3,[50][51][52][53]. Meteorological data include the daily mean air temperature (T mean ), maximum air temperature (T max ), minimum air temperature (T min ), wind speed (WS), wind direction (WD), sunshine hours (SH, the duration from sunrise to sundown, minus the cloudy hours), and 20-20 h precipitation (P, the amount of precipitation from 20:00 on one day to 20:00 on the next day) of the Lake Dianchi Basin from 2000 to 2018.…”

Section: Other Datamentioning

confidence: 99%

“…Many studies have shown that, in addition to nutrient elements, meteorological factors affect the temporal-spatial dynamics of algal blooms [5,26,28,32,44,52]. But the effect of joint parameters has been studied less than that of individual parameters, and identification factors are more qualitative or semi-quantitative [5].…”

Section: Influencing Factors Of Algal Bloomsmentioning

confidence: 99%

MODIS-Satellite-Based Analysis of Long-Term Temporal-Spatial Dynamics and Drivers of Algal Blooms in a Plateau Lake Dianchi, China

Jing

Zhang

et al. 2019

Remote Sensing

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Algal blooms in eutrophic lakes have been a global issue to environmental ecology. Although great progress on prevention and control of algae have been made in many lakes, systematic research on long-term temporal-spatial dynamics and drivers of algal blooms in a plateau Lake Dianchi is so far insufficient. Therefore, the algae pixel-growing algorithm (APA) was used to accurately identify algal bloom areas at the sub-pixel level on the Moderate Resolution Imaging Spectroradiometer (MODIS) data from 2000 to 2018. The results showed that algal blooms were observed all year round, with a reduced frequency in winter–spring and an increased frequency in summer–autumn, which lasted a long time for about 310–350 days. The outbreak areas were concentrated in 20–80 km2 and the top three largest areas were observed in 2002, 2008, and 2017, reaching 168.80 km2, 126.51 km2, and 156.34 km2, respectively. After deriving the temporal-spatial distribution of algal blooms, principal component analysis (PCA) and redundancy analysis (RDA) were applied to explore the effects of meteorological, water quality and human activities. Of the variables analyzed, mean temperature (Tmean) and wind speed (WS) were the main drivers of daily algal bloom areas and spatial distribution. The precipitation (P), pH, and water temperature (WT) had a strong positive correlation, while WS and sunshine hours (SH) had a negative correlation with monthly maximum algal bloom areas and frequency. Total nitrogen (TN) and dissolved oxygen (DO) were the main influencing factors of annual frequency, initiation, and duration of algal blooms. Also, the discharge of wastewater and the southwest and southeast monsoons may contribute to the distribution of algal blooms mainly in the north of the lake. However, different regions of the lake show substantial variations, so further zoning and quantitative joint studies of influencing factors are required to more accurately understand the true mechanisms of algae in Lake Dianchi.

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“…According to the correlation analysis between phytoplankton and environmental factors (Table 4), algae biomass and functional community were significantly correlated with water temperature (p<0.01), indicating that the fluctuation of water temperature had a great impact on the growth of algae. Studies have shown that phytoplankton adapted to temperature changes through changes in chlorophyll productivity and cell division rate, and the range of temperature changes is conducive to the increase of cell division rate and the growth of phytoplankton [47,48]. The high temperature of the buffer zone usually associated with the slow flow speed and together with the long replacement cycle, and it was suitable for algae growth.…”

Section: Spatio-temporal Variation Of Planktonic Algaementioning

confidence: 99%

Spatio-Temporal Variations of Water Quality and Planktonic Algal Communities in Qingshan Reservoir, China

Yan¹,

Xu²,

Yang³

et al. 2023

Pol. J. Environ. Stud.

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Based on the monitoring data of conventional water quality in Qingshan Reservoir from 2018 to 2019, principal component analysis (PCA) and comprehensive nutritional status index (TLI) are used to evaluate water quality, planktonic algal communities, and eutrophication degree of Qingshan reservoir. The results showed that: 1) from 2018 to 2019, the annual average TLI is 56.54, indicating that the reservoir is in a slightly eutrophic state, which is conducive to algae growth; 2) the water quality of Qingshan Reservoir has obvious temporal and spatial variability: the water environment quality commonly decreased in the order winter>spring>autumn>summer, and exit zone>buffer zone>entry zone; meanwhile, the algal biomass in summer and autumn was significantly higher than that in spring and winter, and most of the algae were concentrated in the surface water except in January and decreased with the increase of depth; And related to the water quality environment, the biomass of cyanobacteria and green algae in Qingshan Reservoir is relatively high in summer, while diatom is the dominant species in spring and winter. We come to the conclusion that targeting at region and time will be more effective for the treatment of reservoir eutrophication.

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Effect of temperature control on green algae grown under continuous culture

Cited by 13 publications

References 20 publications

Screening of native microalgae species for carbon fixation at the vicinity of Malaysian coal-fired power plant

Screening of native microalgae species for carbon fixation at the vicinity of Malaysian coal-fired power plant

MODIS-Satellite-Based Analysis of Long-Term Temporal-Spatial Dynamics and Drivers of Algal Blooms in a Plateau Lake Dianchi, China

Spatio-Temporal Variations of Water Quality and Planktonic Algal Communities in Qingshan Reservoir, China

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