Biochar production from microalgae: a new sustainable approach to wastewater treatment based on a circular economy.

The generation of wastewater due to human activities are the main responsible for environmental problems. These problems are caused by the large amount of organic and inorganic pollutants related to the presence of pesticides, metals, pathogens, drugs and dyes. The photosynthetic treatment of effluents emerges as a sustainable and low-cost alternative for developing wastewater treatment systems based on a circular economy.

Microalgae starch: A promising raw material for the bioethanol production.

Ethanol is currently the most successful biofuel and can be produced from microalgal biomass (third-generation). Ethanol from microalgal biomass has advantages because it does not use arable land and reduces environmental impacts through the sequestration of CO from the atmosphere. In this way, micro and macroalgal starch, which is structurally similar to that from higher plants can be considered a promise raw material for the production of bioethanol.

Microalgae biosynthesis of silver nanoparticles for application in the control of agricultural pathogens.

The occurrence of diseases in cultivars has caused significant losses in global food production. The advancement of nanobiotechnology makes it possible to obtain new products to be used in the control of pathogens in cultivars. Silver nanoparticles can be synthesized by microalgae and are widely known for their antimicrobial activity.

Potential of Chlorella fusca LEB 111 cultivated with thermoelectric fly ashes, carbon dioxide and reduced supply of nitrogen to produce macromolecules.

Fly ashes present several minerals that along with carbon dioxide (CO) represent a promising nutrient source and an alternative to reduce environmental problems. Thus, the objective of this study was to investigate if CO, thermoelectric fly ashes and reduction in nitrogen supply alters the production of macromolecules in Chlorella fusca LEB 111. For this purpose, 1.

Enhancement of the carbohydrate content in Spirulina by applying CO, thermoelectric fly ashes and reduced nitrogen supply.

This study focused on evaluating whether the injection of CO, which is associated with the use of thermoelectric fly ashes and a reduced supply of nitrogen, affects the production of intracellular carbohydrates from Spirulina. For this purpose, the addition of 0.25 g L of NaNO, along with a 10% (v v) of CO injection, a flow rate of 0.

Development of pH indicator from PLA/PEO ultrafine fibers containing pigment of microalgae origin.

Phycocyanin is a pigment of intense blue color, constituting the biomass of microalga such as Spirulina. This pigment is sensitive to pH and this instability results in color change. Thus, phycocyanin fading may become interesting for application in intelligent packaging.