Cultivating and harvesting of marine alga Nannochloropsis oculata in local municipal wastewater for biodiesel

Şirin, Sema; Sillanpää, Mika

doi:10.1016/j.biortech.2015.04.094

Cited by 33 publications

(11 citation statements)

References 34 publications

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“…This difference was considered and used to correct the values recorded from gradient-treated co-cultivated cells. In microalgae, F v /F M values of about 0.6 indicate an efficient use of light in the photosynthetic processes (White et al 2013;Sirin and Sillanpää 2015;Bhola et al 2016). F V /F M was higher in mono-cultivated than in the cocultivated cells (Fig.…”

Section: Psii Maximum Quantum Yield Measurementioning

confidence: 93%

“…The low F V /F M values is in line with the lower growth observed in co-culture and indicates a stress condition of the microorganisms; in fact, the analysis of the PSII maximum quantum yield by PAM fluorimetry allows an estimate of the photosynthetic efficiency and can be used as a parameter to evidence the physiological stress in microalgae (Cosgrove and Borowitzka 2010;Ramanna et al 2014;Dao and Beardall 2016). In microalgae, F V /F M values higher than 0.6 indicate good conditions of growth and an efficient use of light for photosynthesis, a condition met in mono-cultures (White et al 2013;Sirin and Sillanpää 2015;Bhola et al 2016). Lower F V /F M values were generally reported under nutrient deficiency or very dense cultures or light-stressed cultures (Beardall et al 2001a, b;Baldisserotto et al 2014;Benvenuti et al 2015).…”

Section: Photosynthetic Propertiesmentioning

confidence: 99%

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A co-cultivation process of Nannochloropsis oculata and Tisochrysis lutea induces morpho-physiological and biochemical variations potentially useful for biotechnological purposes

et al. 2021

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The biotechnological potential of microalgae has gained considerable importance in many applied fields: biomass production for food and feed, cosmeceutical and pharmaceutical products, energy and phytoremediation. The driving force that inspires the progress in microalgae production is the need for new cultivation systems to obtain simultaneously the maximum yield, reduction of water and nutrients use, and production of economically interesting molecules, such as pigments, fatty acids and polysaccharides. We aim to test, for the first time, the co-cultivation in saline medium of Tisochrysis lutea (Haptophyta) and Nannochloropsis oculata (Ochrophyta) to obtain valuable compounds, i.e. pigments and lipids characteristic of each species, using a single culture process. Mono-cultures of each strain were used as controls. The two strains showed an increase in the concentration of chlorophylls and carotenoids in co-culture. At the end of the experiment, the fatty acid profile was analysed by gas chromatography–mass spectrometry. The lipids in the co-cultivated cell extracts were mainly attributable to N. oculata, which represented 97% of the total cells (ca. 83% of the total biomass) at the end of the experiment. Nevertheless, the ω-3 characteristic of T. lutea (DHA and SDA, absent in N. oculata) was also detectable. Although the co-cultivation of these two phylogenetically different species of microalgae did not show positive effects on the growth and on the total lipid production, however, this process resulted in a reduction of the production costs and a lower consumption of water and nutrients.

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Section: Psii Maximum Quantum Yield Measurementioning

confidence: 93%

Section: Photosynthetic Propertiesmentioning

confidence: 99%

A co-cultivation process of Nannochloropsis oculata and Tisochrysis lutea induces morpho-physiological and biochemical variations potentially useful for biotechnological purposes

et al. 2021

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“…, and Nannochloropsis ssp. because of their potential to accumulate high levels of lipids and starch. This review provides an overview of these biological systems, with a particular focus on the potential application of extremophilic microalgae (thermophilic, psychrophilic, and acidophilic), the technological systems used for WWT (suspension vs. immobilized systems), and algae based WWT approaches that have already been put into practice.…”

Section: Introductionmentioning

confidence: 99%

Microalgae wastewater treatment: Biological and technological approaches

Wollmann

Dietze

Ackermann

et al. 2019

Engineering in Life Sciences

248

108

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Current global environmental issues raise unavoidable challenges for our use of natural resources. Supplying the human population with clean water is becoming a global problem. Numerous organic and inorganic impurities in municipal, industrial, and agricultural waters, ranging from microplastics to high nutrient loads and heavy metals, endanger our nutrition and health. The development of efficient wastewater treatment technologies and circular economic approaches is thus becoming increasingly important. The biomass production of microalgae using industrial wastewater offers the possibility of recycling industrial residues to create new sources of raw materials for energy and material use. This review discusses algae‐based wastewater treatment technologies with a special focus on industrial wastewater sources, the potential of non‐conventional extremophilic (thermophilic, acidophilic, and psychrophilic) microalgae, and industrial algae‐wastewater treatment concepts that have already been put into practice.

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“…De Alva et al [18] reported that during the cultivation of Scenedesmus acutus in pre-treated municipal water, TOC decreased by up to 77%, and phosphate and TAN load by up to 65% and 92%, respectively. In the same type of water, a reduction in total nitrogen and phosphorus of 74% and 90%, respectively, was also observed in the cultivation of the marine microalga Nannochloropsis oculata [19].…”

Section: Introductionmentioning

confidence: 63%

Phycoremediation of Landfill Leachate with Desmodesmus subspicatus: A Pre-Treatment for Reverse Osmosis

Kholomyeva

Vurm

Tajnaiová

et al. 2020

Water

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Reverse osmosis is widely used as one of the most effective and advanced technologies for the treatment of leachate from landfill sites. Unfortunately, high leachate contamination—above all, ammonia nitrogen—affects membrane selectivity and is reflected in permeate quality. Furthermore, iron contained in leachate can facilitate chelates forming, which reduces the membrane anti-fouling capacity. The addition of a pre-treatment step could alleviate the adverse impact of the pollutants. As such, we investigated pollutant removal by phycoremediation. Initial ecotoxicity tests of three algal strains (Scenedesmus obliquus (S. obliquus), Desmodesmus subspicatus (D. subspicatus), and Chlorella vulgaris (C. vulgaris)) identified D. subspicatus as the strain most tolerant to leachate toxicity. Subsequently, D. subspicatus was cultivated in six landfill leachates of different origin and, after the cultivation, removal rates were determined for ammonia nitrogen and iron. Furthermore, the impact of input leachate parameters on remediation efficiency was also investigated. By phycoremediation, the reduction of up to 100% in iron and 83% in ammonia nitrogen load was achieved, which demonstrates the high potential of microalgae to mitigate environmental risks and reduce membrane foulant content.

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Cultivating and harvesting of marine alga Nannochloropsis oculata in local municipal wastewater for biodiesel

Cited by 33 publications

References 34 publications

A co-cultivation process of Nannochloropsis oculata and Tisochrysis lutea induces morpho-physiological and biochemical variations potentially useful for biotechnological purposes

A co-cultivation process of Nannochloropsis oculata and Tisochrysis lutea induces morpho-physiological and biochemical variations potentially useful for biotechnological purposes

Microalgae wastewater treatment: Biological and technological approaches

Phycoremediation of Landfill Leachate with Desmodesmus subspicatus: A Pre-Treatment for Reverse Osmosis

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