Microalgae are primary producers of oxygen and exhibit an enormous potential for biotechnological applications. Microalgae cultivation is also an interesting option for wastewater treatment. These microorganisms are efficient in recovering high amounts of nitrogen, inorganic phosphorus, and heavy metals from effluents. Furthermore, microalgae are responsible for the reduction of CO2 from gaseous effluent and from the atmosphere, reducing the greenhouse gases effect. On the other hand, microalgae biomass can be used for the production of pigments, lipids, foods, and renewable energy. The culture of microalgae is not a new issue, since for many decades they have been employed with aquaculture purposes. In fact, some species of Nostoc, Arthrospira (Spirulina) and Aphanizomenon species have been used as food for thousands of years for food applications. The treatment of wastewaters employing microalgae has been reported for decades (specifically for the elimination of phosphorus and nitrogen compounds). Nowadays, there is an increasing interest in the production of biofuels. Bioethanol, biohydrogen, bio-methane, biodiesel and other novel products can be obtained using microalgae as biomass or metabolic products (sugars, lipids, etc). In the near future, microalgae can be oriented (via molecular engineering) to the production of the hole biofuels, such as biodiesel or bio-turbosins. Microalgae and Other Phototrophic Bacteria is a book which will provide information for academics students, policy makers and the general public regarding the state of the art in the field, as well as detailed descriptions of the methodologies employed for culture, processing, recovery and new products. Aspects covered by this book are the microalgae and other phototrophic bacteria.

In a world of declining fossil energy, biotechnology explores multiple products and processes hidden in the rich genome of microbes, plants and animals. One of the reasons for the renewed spirit of biotechnology is supported by its capacity to swiftly incorporate the multidisciplinary advances in basic and applied sciences. This book presents a wide range of biotechnology research by the UPIBI community, teachers and students in the past 24 years. Novel methodologies, basic results and new processes are reported in several of the most dynamic fields in biotechnology such as health, energy, food and environment. This effort will certainly be an inspiration for students wishing to join research teams, for academic colleagues in search of new knowledge and for professionals exploring novel ideas or innovative solutions.