Microbial Bioremediation Shows Promise for Microplastic Degradation but Faces Real World Hurdles

A new scientific review published in Applied Microbiology examines how bacteria, fungi, and engineered enzymes could break down microplastics rather than just moving them around. The paper covers microbial ecology, enzyme engineering, CRISPR, and bioreactor design as tools to dismantle synthetic polymers. It argues that the goal is not finding one plastic eating microbe but building controlled biological systems where microbes, enzymes, and waste infrastructure work together. Current cleanup methods like filtration and dredging often relocate plastic instead of destroying it. Microbial bioremediation offers a different path by breaking polymer chains into chemical units that organisms can metabolize. However, the hardest plastics like polyethylene and polypropylene still resist biological attack. Lab results often do not hold up in real environments like rivers or landfills. Engineered organisms also raise biosafety and regulatory questions that need independent risk assessment before any wide scale deployment.