Characterization of different microalgae cultivated in open ponds

Abstract

Microalga is one of the main sources of biomasses for the production of biofuels in the 21st century. Many labs and industries around the world are seeking for more productive strains and better cultivation models. The aim of this work was to evaluate the growth and kinetic parameters of six microalgae, and the moisture and lipid contents and fatty acids profiles of the biomasses harvested at the end of each cultivation. The microalgae were isolated in the Mid-Western Region of Brazil cultivated in open pond systems. It was observed that among the six microalgae used in this work, Pseudokirchneriella subcapitata presented the higher maximum specific growth rate (μmax) (0.12 day-1). The microalgae Coelastrum sp. and P. subcapitata were the ones with the highest lipid contents, with approximately 20% of dry mass. The main fatty acid accumulated in these conditions was palmitic acid, with percentages of 59 to 69% for all microalgae evaluated. Other factors that had influenced results from cultivations in open ponds were discussed here.

A low-cost approach for Chlorella sorokiniana production through combined use of urea, ammonia and nitrate based fertilizers

“…Journal Pre-proof J o u r n a l P r e -p r o o f represent a method for ciliate contamination control (Ashraf et al, 2011). It is well known that culture crashes due to predator contamination pose a major threat for largescale production of algae, especially in open ponds, and must be properly managed (Lammers et al, 2017;Ribeiro et al, 2019a).…”

“…Finally, there are opportunities to integrate the algal biorefinery concept into existing systems (Brasil et al, 2017), with a number of authors indicating the potential of algae in the production of higher value food, feed, fertilizer, nutraceutical and oleochemical bio-products (Deprá et al, 2018;Laurens, 2017;Ribeiro et al, 2019aRibeiro et al, , 2019b. Apart from the potential of microalgae to mitigate air and water pollution, microalgae could be an important source of feedstock for achieving the Goals of Sustainable Development proposed by the General Assembly of the United Nations (2015).…”

Development of Microalgae Biodiesel: Current Status and Perspectives

“…Ribeiro et al [ 156 ] isolated six microalgae from the Midwest Region of Brazil (Mato Grosso do Sul, Dourados) cultivated in open ponds with potential use for biodiesel production. They observed that Pseudokirchneriella subcapitata presented high growth, while Coelastrum sp.…”

Biosistema Do Alimento: Da Alimentação Humana Ao Aproveitamento De Seus Resíduos Na Produção De Energia

“…Outro benefício ambiental do cultivo das microalgas é a fixação biológica de dióxido de carbono (CO 2 ) (DUARTE; FANKA; COSTA, 2020), um processo que ajuda na mitigação da poluição atmosférica. As microalgas realizam fotossíntese que exige elevadas taxas de fixação biológica de CO 2 para transformação do carbono em energia bioquímica (RIBEIRO et al, 2019).…”