The Use of Light Spectra to Improve the Growth and Lipid Content of Chlorella vulgaris for Biofuels Production

2020 ◽  
Vol 13 (2) ◽  
pp. 487-498 ◽  
Author(s):  
M. del Pilar Sánchez-Saavedra ◽  
Daniel Sauceda-Carvajal ◽  
Fátima Y. Castro-Ochoa ◽  
Ceres A. Molina-Cárdenas
Keyword(s):  
Chlorella Vulgaris ◽  
Lipid Content ◽  
Light Spectra

scholarly journals Effect of Light Intensity and Quality on Growth Rate and Composition of Chlorella vulgaris

Plants ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 31 ◽  
Author(s):  
Maria N. Metsoviti ◽  
George Papapolymerou ◽  
Ioannis T. Karapanagiotidis ◽  
Nikolaos Katsoulas
Keyword(s):  
Growth Rate ◽  
Light Intensity ◽  
Chlorella Vulgaris ◽  
Lipid Content ◽  
Growth Rates ◽  
Solar Irradiance ◽  
White Led ◽  
Microalgal Biomass ◽  
Nm Range ◽  
Effect Of Light

In this research, the effect of solar irradiance on Chlorella vulgaris cultivated in open bioreactors under greenhouse conditions was investigated, as well as of ratio of light intensity in the 420–520 nm range to light in the 580–680 nm range (I420–520/I580–680) and of artificial irradiation provided by red and white LED lamps in a closed flat plate laboratory bioreactor on the growth rate and composition. The increase in solar irradiance led to faster growth rates (μexp) of C. vulgaris under both environmental conditions studied in the greenhouse (in June up to 0.33 d−1 and in September up to 0.29 d−1) and higher lipid content in microalgal biomass (in June up to 25.6% and in September up to 24.7%). In the experiments conducted in the closed bioreactor, as the ratio I420–520/I580–680 increased, the specific growth rate and the biomass, protein and lipid productivities increased as well. Additionally, the increase in light intensity with red and white LED lamps resulted in faster growth rates (the μexp increased up to 0.36 d−1) and higher lipid content (up to 22.2%), while the protein, fiber, ash and moisture content remained relatively constant. Overall, the trend in biomass, lipid, and protein productivities as a function of light intensity was similar in the two systems (greenhouse and bioreactor).

Protein and Lipid Content of Chlorella vulgaris in Relation to Light

Nature ◽  
1960 ◽  
Vol 188 (4755) ◽  
pp. 1031-1032 ◽  
Author(s):  
HEMCHANDRA P. TIPNIS ◽  
ROBERTSON PRATT
Keyword(s):  
Chlorella Vulgaris ◽  
Lipid Content

Effect of salt type and concentration on the growth and lipid content of Chlorella vulgaris in synthetic saline wastewater for biofuel production

2017 ◽  
Vol 243 ◽  
pp. 147-153 ◽  
Author(s):  
Jared Church ◽  
Jae-Hoon Hwang ◽  
Keug-Tae Kim ◽  
Rebecca McLean ◽  
You-Kwan Oh ◽  
...  
Keyword(s):  
Chlorella Vulgaris ◽  
Lipid Content ◽  
Biofuel Production ◽  
Saline Wastewater

scholarly journals Marine microalgae co-cultured with floc-forming bacterium: Insight into growth and lipid productivity

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11217
Author(s):  
Chin Sze Yee ◽  
Victor Tosin Okomoda ◽  
Fakriah Hashim ◽  
Khor Waiho ◽  
Siti Rozaimah Sheikh Abdullah ◽  
...  
Keyword(s):  
Cell Density ◽  
Chlorella Vulgaris ◽  
Lipid Content ◽  
Lipid Accumulation ◽  
Axenic Culture ◽  
Cell Number ◽  
The Other ◽  
Biomass Growth ◽  
Microalgae Biomass ◽  
Insight Into

This study investigated the effect of co-culturing microalgae with a floc-forming bacterium. Of the six microalgae isolated from a biofloc sample, only Thalassiosira weissflogii, Chlamydomonas sp. and Chlorella vulgaris were propagated successfully in Conway medium. Hence, these species were selected for the experiment comparing microalgae axenic culture and co-culture with the floc-forming bacterium, Bacillus infantis. Results obtained showed that the co-culture had higher microalgae biomass compared to the axenic culture. A similar trend was also observed concerning the lipid content of the microalgae-bacterium co-cultures. The cell number of B. infantis co-cultured with T. weissflogii increased during the exponential stage until the sixth day, but the other microalgae species experienced a significant early reduction in cell density of the bacteria at the exponential stage. This study represents the first attempt at co-culturing microalgae with B. infantis, a floc-forming bacterium, and observed increased biomass growth and lipid accumulation compared to the axenic culture.

Integrated Dairy Plant Effluent Treatment and Production of Biomass and Lipids using Micro Algae - "Chlorella vulgaris"

2012 ◽  
Vol 10 (1) ◽  
Author(s):  
Bharathiraja Balasubramaniyan ◽  
Jayamuthunagai Jayaraman
Keyword(s):  
Chlorella Vulgaris ◽  
Lipid Content ◽  
Research Work ◽  
Algal Species ◽  
Oxygen Demand ◽  
Effluent Treatment ◽  
Toxic Substances ◽  
Pure Strain ◽  
Treated Effluent ◽  
High Lipid

Abstract Algal biomass is a potentially inexpensive source of energy which has high lipid content. As India is the Asia’s largest milk producing country (104.8 million tons in the year 2008), the milk production terminates with an effluent production of 5.24% of the total milk produced i.e., 20 million tons of dairy waste is produced. This effluent can be broken down in many ways, but a more economical way is broken down by the growth of the algal species Chlorella vulgaris which results in the tremendous reduction in various toxic salts concentration and other complex chemicals. As the dairy effluent is hostile to the natural environment, the algae is used not only to break down the toxic substances but also to produce Biomass, which is produced at a rate of 17g/l, which contains a lipid content of 30% ( from 1:1 ratio of effluent and water). Also the treated effluent has low chemical oxygen demand [COD], hence this can be used for irrigation of farms mainly those which are heavily fed with chemical fertilizers. The biosynthesis of organics salts, alkanoates [PHAs] and other phenolic compounds, involves algal species the process is secured by using i) large inoculums ii) tolerant strain (pure strain or GM, if available). This research work uses the pure strain of Chlorella vulgaris which involves the treatment of effluent with three different dilutions and analyzing them.

scholarly journals Effect of sodium nitrate concentration on the lipid content of Chlorella vulgaris

2019 ◽  
Vol 5 (12) ◽  
pp. 33506-33524
Author(s):  
José William Alves Silva ◽  
Hudson Damasceno Maia ◽  
Rebeca Larangeira Lima ◽  
Igor Gabriel Rodrigues Ferreira Gomes ◽  
Ana Luzia Assunção Cláudio Araújo ◽  
...  
Keyword(s):  
Chlorella Vulgaris ◽  
Lipid Content ◽  
Sodium Nitrate ◽  
Nitrate Concentration

scholarly journals Investigation of the Relationship between Bacteria Growth and Lipid Production Cultivating of Microalgae Chlorella Vulgaris in Seafood Wastewater

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2282 ◽  
Author(s):  
Thi Dong Phuong Nguyen ◽  
Duc Huy Nguyen ◽  
Jun Wei Lim ◽  
Chih-Kai Chang ◽  
Hui Yi Leong ◽  
...  
Keyword(s):  
Chlorella Vulgaris ◽  
Lipid Content ◽  
Lipid Accumulation ◽  
Lipid Production ◽  
Oxygen Demand ◽  
Value Added ◽  
Bacteria Growth ◽  
Microalgae Culture ◽  
The Relationship ◽  
Microalgae Growth

Algae biorefinery is gaining much attention for the sustainable production of value-added products (e.g., biofuels, protein supplements etc.) globally. The current study aimed to investigate the relationship between lipid production and bacteria growth by an initial microalgae Chlorella vulgaris density culture in seafood wastewater effluent (SWE). According to our results, the initial C. vulgaris concentration in SWE influenced lipid accumulation. The concentration ranged from 25–35 mg·L−1 which corresponds to SWE’s chemical oxygen demand concentration of 365.67 ± 3.45 mg·L−1. A higher microalgae growth rate and lipid content of 32.15 ± 1.45% was successfully attained. A higher lipid content, approximately double, was observed when compared to the control (16.8 ± 0.5%). Moreover, this study demonstrates that bacteria inhibited microalgae growth as the initial cell density stepped over 35 mg·L−1, which also affected lipid accumulation. This study shows an optimal lipid accumulation attained at moderate Chlorella vulgaris density culture in SWE. Hence, wastewater treatment incorporating microalgae culture could be greatly developed in the future to achieve a greener environment.

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