Questions and did not reach a clear

To fulfill this gap, and building on previous work by the authors [28], [29] and [30], this article presents a study based on the Delphi method to obtain more concrete information and predictions on how this area should be further developed. This way it AR-C155858 will be possible to better define which lines of research should be supported, and what policy and funding instruments are more adequate. To the authors' awareness, no study can be found in the literature addressing these questions, involving the usage of microalgae as feedstock for biofuels.
A related work is the National Roadmap Algal Technology Roadmap [31], the result of a two day workshop that brought together specialists from various areas, including engineers, scientists, policy makers, financiers, and others, to discuss the present and future of microalgae as a feedstock for biofuel production. The final document was intended to serve as a revision of the current state of the art in the area, and to identify which are the key challenges special senses must be considered to achieve a commercial scale production, serving as a guide to ongoing efforts. The study is rather comprehensive and extensive but fails to highlight which are the areas and aspects that are considered to be more important and should be considered first, from a cost–benefit point of view.