The contamination and control of biological pollutants in mass cultivation of microalgae

Wang, Hui; Zhang, Wei; Chen, Lin; Wang, Junfeng; Liu, Tianzhong

doi:10.1016/j.biortech.2012.10.158

Cited by 310 publications

(175 citation statements)

References 67 publications

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“…La intensidad lumínica y la temperatura son los factores de mayor incidencia en la fotosíntesis y en el crecimiento de las microalgas, pero también influyen en los contaminantes biológicos (bacterias, zooplancton, virus y microalgas). Los ajustes de estos aspectos al rango ópti-mo de las microalgas desmejorarán los riesgos de contaminación (Wang, Zhang, Chen, Wang y Liu, 2013).…”

Section: Resultados Y Discusiónunclassified

Cultivo de microalgas Isochrysis galbana y Nannochloropsis sp. para alimentación de larvas de peces marinos

Gutiérrez

Romero

Barros³

et al. 2017

Revista Mutis

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En la producción de alimento vivo, representado principalmente por microalgas, se buscan nuevas técnicas de medios de cultivo sustituyendo las fórmulas tradicionales en aras de reducir costos. Teniendo en cuenta esto, se usó un medio no convencional (fertilizantes industriales) para producir las microalgas Isochrysis galbana y Nannochloropsis sp. en cultivos estáticos, y se alcanzaron densidades de 7,5 × 106 cel mL–1 de Nannochloropsis sp. en 1000 L y 0,265 × 106 cel mL–1 de I. galbana en 250 L. Hubo un crecimiento exponencial, que se alcanzó entre los tres y los ocho días, en que se duplicaron las densidades iniciales. Se sugiere cosechar en lapsos cortos (hasta cuatro días), debido a la proliferación de contaminantes y la disminución de la calidad de las células con el tiempo. Se concluye que el medio diseñado para el enriquecimiento del cultivo es una alternativa viable para la producción de las microalgas que permite satisfacer la demanda alimenticia en el levante de larvas de peces marinos.

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Section: Resultados Y Discusiónunclassified

Cultivo de microalgas Isochrysis galbana y Nannochloropsis sp. para alimentación de larvas de peces marinos

Gutiérrez

Romero

Barros³

et al. 2017

Revista Mutis

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“…Further research studies are needed to control these contaminations [114]. Possible synergistic effect in consortium should be investigated such as protection by a specific species, symbiosis.…”

Section: Contaminations Control and Consortium Protectionmentioning

confidence: 99%

The Environmental Biorefinery: Using Microalgae to Remediate Wastewater, a Win-Win Paradigm

et al. 2016

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Abstract:Microalgae have been shown to be a source of multiple bio-based products ranging from high value molecules to commodities. Along with their potential to produce a large variety of products, microalgae can also be used for the depollution of wastewaters of different origins (urban, industrial, and agricultural). This paper is focused on the importance of harnessing the bioremediation capacity of microalgae to treat wastewaters in order to develop the microalgae industry (especially the microalgae biofuel industry) and to find other alternatives to the classic wastewater treatment processes. The current research on the potential of microalgae to treat a specific wastewater or a targeted pollutant is reviewed and discussed. Then, both strategies of selecting the best microalgae strain to treat a specific wastewater or pollutant and using a natural or an artificial consortium to perform the treatment will be detailed. The process options for treating wastewaters using microalgae will be discussed up to the final valorization of the biomass. The last part is dedicated to the challenges which research need to address in order to develop the potential of microalgae to treat wastewaters.

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“…State-of-the-art approaches include chemical interventions that either selectively kills grazers/pathogens or otherwise provides a selective advantage for the algal crop (i.e., pesticide application) [17,192,194]; periodic modulation of chemical conditions in the algal cultivation system filtration (e.g., pH reduction and NH 3 addition) [192,195]; early detection of grazers and other contaminants to time harvest cycles, thereby limiting grazer effects on productivity [128,196]; application of continuous strong selective conditions to limit the growth and viability of unwanted competitors (e.g., hypersaline conditions) [197]; and genetic modification of the algal cultivar to change protein expression, thereby altering palatability of the algal cell [198]. While each of these approaches can reduce the number and impact of grazers, they can also represent unique regulatory or economic hurdles and limit the diversity of the algal strains compatible with each control mechanism.…”

Section: Path Forwardmentioning

confidence: 99%

Assessing the potential of polyculture to accelerate algal biofuel production

Newby¹,

Mathews²,

Pate³

et al. 2016

Algal Research

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To date, the algal biofuel industry has focused on the cultivation of monocultures of highly productive algal strains, but scaling up production remains challenging. Algal monocultures are difficult to maintain because they are easily contaminated by wild algal strains, grazers, and pathogens. In contrast, theory suggests that polycultures (multispecies assemblages) can promote both ecosystem stability and productivity. A greater understanding of species interactions and how communities change with time needs to be developed. Ultimately a predictive model of community interactions is needed to harness the capacity of biodiversity to enhance productivity of algal polycultures at industrial scales. Here we review the agricultural and ecological literature to explore opportunities for increased annual biomass production through the use of algal polycultures. We discuss case studies where algal polycultures have been successfully maintained for industries other than the biofuel industry, as well as the few studies that have compared biomass production of algal polycultures to that of monocultures. Assemblages that include species with complementary traits are of particular promise. These assemblages have the potential to increase crop productivity and stability presumably by utilizing natural resources (e.g. light, nutrients, and water) more efficiently via tighter niche packing. Therefore, algal polycultures show promise for enhancing biomass productivity, enabling sustainable production and reducing overall production costs.

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The contamination and control of biological pollutants in mass cultivation of microalgae

Cited by 310 publications

References 67 publications

Cultivo de microalgas Isochrysis galbana y Nannochloropsis sp. para alimentación de larvas de peces marinos

Cultivo de microalgas Isochrysis galbana y Nannochloropsis sp. para alimentación de larvas de peces marinos

The Environmental Biorefinery: Using Microalgae to Remediate Wastewater, a Win-Win Paradigm

Assessing the potential of polyculture to accelerate algal biofuel production

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