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The article is found interesting as it deals with the negative aspects of biofuels from microalgae. The energy balance which is an essential factor influencing sustainability of biomass production is discussed. It can be determined that at first glance, microalgae appear to be an attractive source of biomass.

A more detailed consideration of energy requirements, however, indicates that the practice is not sustainable because of the negative energy balance associated with the production process. Culture stability, media recycling and harvesting are still a significant challenge and require further research. Field demonstration projects are necessary to advance understanding the possible environmental risk of large scale microalgal monocultures.

Link:Biofuels from microalgae are not yet sustainable

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