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Biopolymers in Aerobic Granular Sludge—Their Role in Wastewater Treatment and Possibilities of Re-Use in Line with Circular Economy

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  • Agnieszka Cydzik-Kwiatkowska

    (Department of Environmental Biotechnology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Sloneczna 45g, 10-687 Olsztyn, Poland)

Abstract

Aerobic granular sludge (AGS) technology for wastewater treatment ensures better quality effluent and higher process sustainability than wastewater treatment systems based on activated sludge. One of the reasons for the better operational results of AGS systems is the high content of extracellular polymers (EPS) in the granule structures. EPS produced during granulation have a very complex composition with a predo minance of polysaccharides and proteins, and one of the main components, alginate, may have a wide variety of practical applications. This review summarizes up-to-date information on the composition of EPS in AGS, the manner in which their production and composition are affected by the operational parameters of wastewater treatment, and the effects of EPS in biomass on wastewater treatment and sludge management. Additionally, the possibility of polymer recovery from AGS is presented together with information regarding potential applications based on the newest findings. Re-use of AGS-derived polymers will increase the sustainability of wastewater treatment processes by making them more economical and reducing the amount of sludge that requires management.

Suggested Citation

  • Agnieszka Cydzik-Kwiatkowska, 2021. "Biopolymers in Aerobic Granular Sludge—Their Role in Wastewater Treatment and Possibilities of Re-Use in Line with Circular Economy," Energies, MDPI, vol. 14(21), pages 1-17, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:21:p:7219-:d:670603
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    References listed on IDEAS

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    1. van der Hoek, Jan Peter & de Fooij, Heleen & Struker, André, 2016. "Wastewater as a resource: Strategies to recover resources from Amsterdam’s wastewater," Resources, Conservation & Recycling, Elsevier, vol. 113(C), pages 53-64.
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    Cited by:

    1. Agnieszka Cydzik-Kwiatkowska, 2021. "Advanced Wastewater Treatment and Biomass Energy," Energies, MDPI, vol. 15(1), pages 1-3, December.
    2. Joanna Kazimierowicz & Marcin Dębowski, 2022. "Aerobic Granular Sludge as a Substrate in Anaerobic Digestion—Current Status and Perspectives," Sustainability, MDPI, vol. 14(17), pages 1-24, August.

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