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Microbiologists have devised a sustainable way to remove polluting microplastics from the environment – and they want to use bacteria to do the job. Bacteria naturally tend to group together and stick to surfaces, and this creates an adhesive substance called “biofilm” – we see it every morning when brushing our teeth and getting rid of dental plaque, for example. Researchers at the Hong Kong Polytechnic University (PolyU) want to use this sticky bacteria property and create tape-like microbe nets that can capture microplastics in polluted water to form an easily disposable and recyclable blob. Although these findings are still preliminary, this invention could pave the way for sustainably lowering plastic pollution levels in the long run by simply using something found in nature.

Microplastics are the plastic fragments, usually smaller than 5mm, which are accidentally released into the environment during production and breakdown of, for example, grocery bags or water bottles – or during everyday activities such as washing synthetic clothes such as nylon or using personal care products with scrubbing microbeads in them.