Marine Microalgae Tetraselmis suecica as Flocculant Agent of Bio-flocculation Method

Kawaroe, Mujizat; Prartono, Tri; Sunuddin, Adriani; Saputra, Deni

doi:10.1016/j.hjb.2015.09.003

Cited by 29 publications

(13 citation statements)

References 14 publications

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“…Some authors (e.g. Coelho et al 2014, Kawaroe et al 2016 seek to attain high cell-density production to reduce harvest effort. Therefore, the selection of light-intensity conditions should be based on whether the purpose of the culture is producing a higher pigment concentration or reducing production costs in terms of light consumption.…”

Section: Discussionmentioning

confidence: 99%

Effect of light intensity and nutrient concentration on growth and pigments of the green microalga Tetraselmis suecica

Montes-González¹,

González-Silvera

Valenzuela-Espinoza

et al. 2021

Lat. Am. J. Aquat. Res.

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Tetraselmis suecica is a green microalga that thrives under a wide range of conditions, used in the commercial culture of fish, mollusk, and crustacean larvae for supplementing the demand for fertilizers. Its pigments have applications in human health care as drug products, vitamins, and cosmetics. Growth and pigment concentration of T. suecica were evaluated in experimental cultures with different nutrient concentrations and light intensities to determine the most appropriate culture conditions to optimize the production of biomass and pigments. Chlorophyll-a, chlorophyll-b, lutein, violaxanthin, α, β-carotene, and neoxanthin concentrations were evaluated under three different nutrient conditions (441.5/18.1, 883/36.3, and 1766/76.2 μM of NaNO3/NaH2PO4) and four light intensities (50, 150, 300, and 750 μmol quanta m-2 s-1). Increases in either or both of these factors lead to increases in the concentration of all pigments. Chlorophyll-a reached up to 5×103 mg m-3, chlorophyll-b up to 2500 mg m-3, lutein 600 mg m-3, violaxanthin 300 mg m-3, α, β-carotene 500 mg m-3, and neoxanthin 400 mg m-3. Growth rate (μ) attained values of 1.6 d-1. An index to evaluate the efficiency of pigment production by light intensity (called LER) was computed. The highest LER was recorded at 50 μmol quanta m-2 s-1 and a nutrient concentration of 1766/76.2 μM (NaNO3/NaH2PO4); this treatment optimizes pigment production with the lowest light intensity. Our results show that the optimum light intensity should be selected according to the objective of the culture, either maximizing pigment concentration for harvesting at higher concentrations or reducing production costs regarding light consumption.

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Section: Discussionmentioning

confidence: 99%

Effect of light intensity and nutrient concentration on growth and pigments of the green microalga Tetraselmis suecica

Montes-González¹,

González-Silvera

Valenzuela-Espinoza

et al. 2021

Lat. Am. J. Aquat. Res.

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“…Biodiesel produced by microalgae plays an important role in alleviating the energy crisis of the Earth. However, in terms of economic benefits, it is almost impossible to prepare biodiesel by microalgae, so it is necessary to find a low-cost and high-efficiency microalgae harvesting method. − A new process of pelletized cell cultivation was described in these studies to co-culture a filamentous fungal species with microalgae, so that microalgae cells can be co-pelletized into fungal pellets for easier harvest. − The novel technology is not only used in wastewater treatment, but also has a high application prospects, compared with the current algal harvesting and biological wastewater treatment technology in the literature. − Note that the microalgae can fix CO 2 , produce organic compounds, and promote fungus growth, which, in return, entrap the microalgae via hyphae production. ,− In addition, the results showed that the lipid of microalgae collected by mycelial pellets was higher than that via an autoflocculation method, which would significantly increase the sustainability of microalgae-derived biofuels; − this is effective for both heterotrophic and autotrophic microalgal compounds. − The inoculation of Chlorella sorokiniana cultures with blastospores of Isaria fumosorosea and their co-cultivation under strict autotrophic conditions, reducing the costs of harvesting as well as significantly increasing biomass yield . In addition, actinomycete Streptomyces sp.…”

Section: The Application Of the Mycelial Pelletmentioning

confidence: 99%

A Comprehensive Review of the Mycelial Pellet: Research Status, Applications, and Future Prospects

Liang

Liu

et al. 2020

Ind. Eng. Chem. Res.

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The mycelial pellet is a microbial aggregator formed under certain conditions. Besides the ability to secrete metabolites and adsorb a large amount of pollutants, the mycelial pellet has the characteristics of high biological activity, fast sedimentation speed, and easy solid−liquid separation. The technology of the mycelial pellet has been considered to be a promising technology for biomass utilization. To date, the mycelial pellet has been extensively studied for the production of various valuable products. Applications of mycelial pellets for microalgal biomass harvesting and wastewater treatment have also received more attention in recent years. Nevertheless, there are still some difficulties in the practical application of mycelial pellet technology. This review focuses on the characteristics, formation mechanism, formation conditions, and application research of mycelial pellets. This study provides much knowledge and information on the application technology of mycelial pellets in water pollution control, microalgae biomass harvesting, and industrial fermentation production. Problems existing in the scientific research and the main development trends of mycelial pellets are presented.

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“…Flocculants disturb the stability of the particles in suspension and allow them to aggregate, causing separation of the solid–liquid phases efficiently, improving the following processes such as centrifugation, sedimentation, and filtration. Usually, flocculants are inorganic multivalent metal salts, organic polymers, and microbes .…”

Section: Harvestingmentioning

confidence: 99%

Microalgae as a potential source for biodiesel production: techniques, methods, and other challenges

Arenas

Palacio

Juantorena

et al. 2016

Int. J. Energy Res.

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Summary This paper reviews some of the most important aspects of microalgae as a potential source for biodiesel production. Microalgae are photosynthetic microorganisms that can grow rapidly in a variety of environments because of their unicellular or multicellular structure depending on the species. They have the advantage of self‐reproduction using solar energy and converting it into chemical energy via photosynthesis. This process concludes a full cycle in a few days, obtaining higher lipid yields than terrestrial crops. This review shows several techniques and some methodologies used in the biodiesel production process from microalgae as well as the challenges that must be overcome for large‐scale process and in bio‐refineries. Copyright © 2016 John Wiley & Sons, Ltd.

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Marine Microalgae Tetraselmis suecica as Flocculant Agent of Bio-flocculation Method

Cited by 29 publications

References 14 publications

Effect of light intensity and nutrient concentration on growth and pigments of the green microalga Tetraselmis suecica

Effect of light intensity and nutrient concentration on growth and pigments of the green microalga Tetraselmis suecica

A Comprehensive Review of the Mycelial Pellet: Research Status, Applications, and Future Prospects

Microalgae as a potential source for biodiesel production: techniques, methods, and other challenges

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