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Area of Science:

  • Environmental Microbiology
  • Biotechnology
  • Polymer Science

Background:

  • The global plastic waste crisis necessitates innovative environmental remediation strategies.
  • Biotechnological approaches offer sustainable solutions for plastic degradation and upcycling, supporting a circular bioeconomy.
  • Low biodegradation efficiency of solid plastics, particularly at mesophilic temperatures, hinders effective treatment.

Purpose of the Study:

  • To review advancements in using biofilm formation and cell-surface adhesion for localizing plastic-degrading microbes to plastic surfaces.
  • To explore strategies combining surface localization with extracellular enzyme expression for enhanced plastic degradation.
  • To discuss the application of these biotechnologies for nano- and microplastic bioremediation in wastewater.

Main Methods:

  • Leveraging natural biofilm formation mechanisms for microbial surface colonization.
  • Utilizing cell-surface adhesion biotechnologies to engineer targeted microbial localization.
  • Integrating extracellular enzyme expression with surface-associated microbial consortia.
  • Reviewing case studies on bioremediation of micro- and nanoplastics.

Main Results:

  • Biofilm-mediated surface association is a promising strategy to overcome low biodegradation efficiency.
  • Co-localization of engineered cells and plastic-degrading enzymes can accelerate polymer breakdown.
  • These approaches show potential for effective nano- and microplastic removal from wastewater.

Conclusions:

  • Cell-surface adhesion and biofilm strategies offer significant opportunities for enhancing plastic biodegradation.
  • Combining these methods with enzyme expression presents a viable pathway for efficient plastic waste management.
  • Further research is needed to advance this nascent field for comprehensive plastic pollution control.