A screening model to predict microalgae biomass growth in photobioreactors and raceway ponds

2013 ◽  
Vol 110 (6) ◽  
pp. 1583-1594 ◽  
Author(s):  
M. H. Huesemann ◽  
J. Van Wagenen ◽  
T. Miller ◽  
A. Chavis ◽  
S. Hobbs ◽  
...  
Keyword(s):  
Biomass Growth ◽  
Screening Model ◽  
Microalgae Biomass ◽  
Raceway Ponds

scholarly journals Controlling of two destructive zooplanktonic predators in Chlorella mass culture with surfactants

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Xiaobin Wen ◽  
Aoqi Zhang ◽  
Xiaoyan Zhu ◽  
Lin Liang ◽  
Yan Huo ◽  
...  
Keyword(s):  
Mass Culture ◽  
Chemical Method ◽  
Sodium Dodecyl ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Biofuel Production ◽  
Benzene Sulfonate ◽  
Microalgae Biomass ◽  
Mass Cultures ◽  
Dodecyl Benzene Sulfonate ◽  
Raceway Ponds

Abstract Background Predatory flagellates and ciliates are two common bio-contaminants which frequently cause biomass losses in Chlorella mass culture. Efficient and targeted ways are required to control these contaminations in Chlorella mass cultivation aiming for biofuel production especially. Results Five surfactants were tested for its ability to control bio-contaminations in Chlorella culture. All five surfactants were able to eliminate the contaminants at a proper concentration. Particularly the minimal effective concentrations of sodium dodecyl benzene sulfonate (SDBS) to completely eliminate Poterioochromonas sp. and Hemiurosomoida sp. were 8 and 10 mg L−1, respectively, yet the photosynthesis and viability of Chlorella was not significantly affected. These results were further validated in Chlorella mass cultures in 5, 20, and 200 m2 raceway ponds. Conclusions A chemical method using 10 mg L−1 SDBS as pesticide to control predatory flagellate or ciliate contamination in Chlorella mass culture was proposed. The method helps for a sustained microalgae biomass production and utilization, especially for biofuel production.

Simultaneous enhancement of microalgae biomass growth and lipid accumulation under continuous aeration with 15% CO2

RSC Advances ◽  
2015 ◽  
Vol 5 (63) ◽  
pp. 50851-50858 ◽  
Author(s):  
Yun Huang ◽  
Jun Cheng ◽  
Hongxiang Lu ◽  
Rui Huang ◽  
Junhu Zhou ◽  
...  
Keyword(s):  
Lipid Accumulation ◽  
Nitrogen Deprivation ◽  
Biomass Growth ◽  
Microalgae Biomass

Continuous aeration with 15% CO2 induced nitrogen deprivation during Chlorella PY-ZU1 cultivation, thus simultaneously promoting biomass (2.78 g L−1) and lipid (47.04%) production.

scholarly journals MICROALGAE POTENTIAL TO DECREASING DISSOLVED AMONIA CONCENTRATION (NH3) ON LIQUID WASTE OF UREA FERTILIZER FACTORY

2019 ◽  
Vol 8 (1) ◽  
pp. 224
Author(s):  
Fadjar Sidiq Hidayahtullah ◽  
Agus Hermawan ◽  
Nuni Gofar
Keyword(s):  
Water Treatment ◽  
Sampling Method ◽  
Liquid Waste ◽  
Chemical Properties ◽  
Ammonia Concentration ◽  
Biomass Growth ◽  
Grab Sampling ◽  
Urea Fertilizer ◽  
Treatment Processes ◽  
Microalgae Biomass

The purpose of this research to analyzing the abilities of microalgae from various water treatment processes to improving chemical properties (pH, dissolved NH3, BOD, NO3-) the liquid waste of urea fertilizer factory. The sampling method has used the grab sampling method for a certain period. Microalgae sources are obtained from various water treatment processes and mixed with waste of water at a dose of 300 mg L-1. The results showed the source of microalgae clarifier was significantly different in reducing dissolved ammonia concentration, pH, and nitrate. Based on the results of regression analysis and correlation showed that the microalgae population was partially correlated with pH, BOD, nitrate, and dissolved ammonia of 1.61%, 87.70%, 55.38%, and 9.63%. While the concentration of dissolved ammonia significantly affected pH, BOD, nitrate, and microalgae biomass growth of 84.40%.

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.

scholarly journals Effect of Tris-(hydroxymethyl)-amino methane on microalgae biomass growth in a photobioreactor

2016 ◽  
Vol 208 ◽  
pp. 1-6 ◽  
Author(s):  
Thanh Tin Nguyen ◽  
Xuan Thanh Bui ◽  
Minh Duyen Pham ◽  
Wenshan Guo ◽  
Huu Hao Ngo
Keyword(s):  
Biomass Growth ◽  
Microalgae Biomass

scholarly journals Novel Stacked Modular Open Raceway Ponds for Microalgae Biomass Cultivation in Biogas Plants: Preliminary Design and Modelling

2020 ◽  
Vol 24 (2) ◽  
pp. 1-19
Author(s):  
Francesco Romagnoli ◽  
Baiba Ievina ◽  
Weerasuriya Arachchige Anton Rayan Perera ◽  
Davide Ferrari
Keyword(s):  
Large Scale ◽  
Biogas Production ◽  
High Growth ◽  
Growth Conditions ◽  
Light Sources ◽  
Production Plant ◽  
Waste Products ◽  
Microalgae Biomass ◽  
Large Scale Cultivation ◽  
Raceway Ponds

AbstractMicroalgae hold great potential as a source for renewable energy due to their high photosynthetic efficiency, high growth rates and independence from fertile agricultural lands. However, large-scale cultivation systems of microalgae biomass are still not economically viable mainly due to the difficulties with maintaining optimum growth conditions of microalgae in open pond systems and high costs of biomass cultivation and harvesting. Here we propose the Novel Stacked Modular Open Raceway Ponds (SMORPs) system for microalgae biomass cultivation to be integrated in biogas production plant. The proposed technological solution will eliminate the drawbacks of current microalgae cultivation technologies, mainly, will reduce the land use, improve lighting conditions and reduce the cost of cultivation as a result of the application of waste products from biogas production, i.e. anaerobic digestion effluent and flue gas. In this study we propose the initial design of the SMORP concept and a microalgae biomass kinetic model as a simple approach to screen microalgae strains potentially applicable for large-scale ponds. The developed tool is also useful to evaluate the potential benefit of additional artificial LED light sources and to assess the maximum biomass growth rate with minimal light intensity.

Estimating the Maximum Achievable Productivity in Outdoor Ponds: Microalgae Biomass Growth Modeling and Climate-Simulated Culturing

2016 ◽  
pp. 113-137
Author(s):  
Michael Huesemann ◽  
Mark Wigmosta ◽  
Braden Crowe ◽  
Peter Waller ◽  
Aaron Chavis ◽  
...  
Keyword(s):  
Growth Modeling ◽  
Biomass Growth ◽  
Microalgae Biomass

The stability analysis of the nutrition restricted dynamic model of the microalgae biomass growth

2018 ◽  
Author(s):  
R. Ratianingsih ◽  
Fitriani ◽  
N. Nacong ◽  
Resnawati ◽  
Mardlijah ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Dynamic Model ◽  
Biomass Growth ◽  
Microalgae Biomass ◽  
The Stability

scholarly journals Screening of Suitable Ionic Liquids as Green Solvents for Extraction of Eicosapentaenoic Acid (EPA) from Microalgae Biomass Using COSMO-RS Model

Molecules ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 713 ◽  
Author(s):  
Shiva Rezaei Motlagh ◽  
Razif Harun ◽  
Dayang Awang Biak ◽  
Siti Hussain ◽  
Wan Wan Ab Karim Ghani ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Eicosapentaenoic Acid ◽  
Unsaturated Fatty Acids ◽  
Alkyl Chain ◽  
Lipid Extraction ◽  
Green Solvents ◽  
Omega 3 ◽  
Screening Model ◽  
Microalgae Biomass ◽  
Risk Of Cancer

Omega-3 poly unsaturated fatty acids (PUFA) particularly eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), have many health benefits including reducing the risk of cancer and cardiovascular disease. Recently, the use of ionic liquids (ILs) in lipid extraction from microalgae provides the potential to overcome common drawbacks, offers several other benefits. To date, very limited researches are available to focus on extracting microalgae lipid and PUFA in particular by using ILs. The objective of current work is to screen the potential ILs that can be applied in EPA extraction. In this study, fast ILs screening was performed with the help of a conductor like screening model for real solvents (COSMO-RS) and the ILs with higher capacity values for use in extraction of EPA were compared. According to the results, the highest capacity for EPA extraction among 352 screened cation/anion combinations belongs to [TMAm][SO4]. It is expected to achieve a higher yield of EPA once applying this combination as the solvent in the process of extraction. ILs with small anions were observed to have higher capacities, as well possessing higher charge density compared to larger ones, and therefore, they are more preferable for extraction purposes. Moreover, shorter alkyl chain cations are preferred when using imidazolium-based IL, which agrees with experimental data.

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