Development and challenges of emerging biological technologies for algal-bacterial symbiosis systems: A review.

Bioresour Technol

Key Laboratory of Environmental Protection in Water Transport Engineering Ministry of Communications, Tianjin Research Institute of Water Transport Engineering, Tianjin 300456, China. Electronic address:

Published: December 2024

AI Article Synopsis

  • The algal-bacterial symbiosis system (ABSS) is a sustainable method for treating wastewater, effective in removing heavy metals and emerging pollutants.
  • This review covers the different reactor types, factors affecting the ABSS process, and introduces a new approach that combines ABSS with other techniques to improve the removal of hard-to-biodegrade pollutants.
  • It also explores the microscopic interactions between algae and bacteria, such as nutrient exchange and signaling, while providing future recommendations to enhance ABSS technology for better wastewater treatment.

Article Abstract

The algal-bacterial symbiosis system (ABSS) is considered as a sustainable wastewater treatment process. This review provides a comprehensive overview of the mechanisms of ABSS for the removal of common pollutant, heavy metals, and especially for emerging pollutants. For the macroscopical level, this review not only describes in detail the reactor types, influencing factors, and the development of the algal-bacterial process, but also innovatively proposes an emerging process that combines an ABSS with other processes, which enhances the efficiency of removing difficult-to-biodegrade pollutants. Further for the microscopic level, interactions between algae and bacteria, including nutrient exchange, signaling transmission and gene transfer, have been deeply discussed the symbiotic relationship with nutrient removal and biomass production. Finally, recommendations are given for the future development of the ABSS. This review comprehensively examines ABSS principles, development, algal-bacterial interactions, and application in wastewater treatment, aiming to deepen theoretical and practical understanding and advance ABSS technology.

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http://dx.doi.org/10.1016/j.biortech.2024.131459DOI Listing

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