Overview of microalgae and cyanobacteria-based biostimulants produced from wastewater and CO2 streams towards sustainable agriculture: A review

Growth characterization and biostimulant potential ofCoelastrellasp. D14 a green microalga isolated from a solar panel

“…Due to the ability of microalgae to grow in very diverse environments, and considering the idea of circular economy, wastewaters that are rich in nutrients can be used as a culture medium. In fact, growing microalgae in wastewater is a suitable alternative to reduce freshwater expenses and valorize residual nutrients (Ahmed et al, 2022; Sánchez-Quintero et al, 2023). (Sharma et al, 2022) enumerates several economic and growth considerations when cultivating microalgae in wastewater pointing to that appropriate strains’ selection is crucial for the whole process.…”

“…There are recent strategies of culturing microalgae using wastewater and CO 2 to produce large quantities of biomass at moderate costs while integrating local and circular economy approaches (Sánchez-Quintero et al, 2023). The fact that the microalgal D14 biomass could be used directly as a biostimulant implies a reduction in economic costs and a sustainable application, avoiding synthetic stimulants.…”

“…The utilization of biofertilizers and biostimulants as a natural product is particularly crucial to avoid the use of chemicals that may lead to environmental contamination, namely in soil, water and affect the quality of the food produced. Numerous efforts are being made to expand the application of these natural biostimulants (Navarro-López et al, 2020; González-Pérez et al, 2021; Sánchez-Quintero et al, 2023) under strict legislations and regulations that depends on the continent (Su et al, 2023). The use of microalgae as biostimulants has acquired importance for their role in the sustainability and circular bieconomy agenda (Ajeng et al, 2022; Sánchez-Quintero et al, 2023).…”

“…Numerous efforts are being made to expand the application of these natural biostimulants (Navarro-López et al, 2020; González-Pérez et al, 2021; Sánchez-Quintero et al, 2023) under strict legislations and regulations that depends on the continent (Su et al, 2023). The use of microalgae as biostimulants has acquired importance for their role in the sustainability and circular bieconomy agenda (Ajeng et al, 2022; Sánchez-Quintero et al, 2023). This is because they are capable of sequestering CO 2 , they can survive in challenging environments such as waste effluents and and their easier cultivation compared to macroalgae (Sánchez-Quintero et al, 2023).…”

“…The use of microalgae as biostimulants has acquired importance for their role in the sustainability and circular bieconomy agenda (Ajeng et al, 2022; Sánchez-Quintero et al, 2023). This is because they are capable of sequestering CO 2 , they can survive in challenging environments such as waste effluents and and their easier cultivation compared to macroalgae (Sánchez-Quintero et al, 2023).…”