Resource recovery from wastewaters using microalgae-based approaches: A circular bioeconomy perspective

Area of Science:

• Environmental Science
• Biotechnology
• Sustainable Resource Management

Background:

• Growing global population increases demand for resources and wastewater generation.
• Wastewater contains valuable nutrients (carbon, nitrogen, phosphorus) and energy sources.
• Current wastewater treatment methods have significant environmental impacts.

Purpose of the Study:

• To review the potential of microalgal cultivation for nutrient recovery from wastewater.
• To explore the integration of wastewater treatment and microalgal biomass production.
• To identify factors and future research needs for large-scale application.

Main Methods:

• Literature review on microalgal wastewater treatment and nutrient recovery.
• Analysis of microalgae's role in nutrient uptake and biomass generation.
• Discussion of challenges and opportunities for scaling up.

Main Results:

• Microalgae effectively utilize wastewater nutrients for growth and biomass production.
• Integration enhances nutrient recovery (carbon, nitrogen, phosphorus, micronutrients).
• Improved environmental performance compared to conventional methods.

Conclusions:

• Microalgae offer a promising solution for sustainable wastewater management and resource recovery.
• Further research is needed to optimize large-scale microalgal wastewater treatment.
• This approach aligns with circular bioeconomy principles for resource reuse.