Nurdles – They sound kinda cute don’t they. Perhaps they’re a new, lovable cartoon family on CBeebies or a tasty 60-second microwave treat? Well, no… Despite the rather appealing name, they’re anything but cute and lovable. They are in fact the bigger brother of microplastics. We’ll assume you’ve already heard of microplastic as the word has now made its way into popular culture and is often the subject of mainstream news articles. Just in case you haven’t, microplastics are tiny particles of plastic ranging in size from 10 nanometres right up to 5mm in diameter.
How Big Are Nurdles?Technically, nurdles are a form of microplastic and are relatively uniform in size, having a diameter of around 5mm, which is about the size of a lentil. They differ from most other types of microplastics insofar as they’re manufactured this way. Conversely, microplastics tend to be tiny particles of plastic that have broken off of bigger pieces of plastic and often end up in the world’s oceans. The reason that they’re a problem is that they don’t biodegrade, they just break into smaller and smaller pieces.
Why are nurdles manufactured?Similar to microbeads (tiny bits of plastic deliberately put int cosmetics products such as facial scrubs), nurdles are made this way so that they can be easily transported to factories where they are melted down and made into other products such as single-use plastic bottles, drinking straws, supermarket plastic packaging and so on.
What’s the problem with nurdles?Whilst they may seem harmless enough to look at, these pretty little coloured nurdle beads hold a few sinister secrets. One problem is that they often find their way into rivers and oceans due to industrial spillage and/or poor waste management procedures at factories. As a result, they ultimately find their way into the sea. If that wasn’t bad enough, because of their size and variety of colours, nurdles are often mistaken as fish eggs by other fish or sea-dwelling birds and are gulped down as food. To compound the problem even further, they also attract toxic chemicals which are already present in our oceans such as DDT, PCBs, HCH and NPEs. These are known as “persistent organic pollutants” (POPs) and are organic compounds that don’t biodegrade easily and are known for their adverse effects on human/animal health and the environment. If you don’t know what DDT, PCBs, HCH and NPEs are, here’s a brief summary:
- DDT (Dichlorodiphenyltrichloroethane) – Used in the control of malaria and typhus during World War 2 then used as a common pesticide. It was banned in the UK in 1984 due to its harmful effect on people and animals.
- PCBs (Polychlorinated biphenyl) – Used as an industrial coolant and in electrical wiring and was found to be toxic in the 1970s.
- HCH (Hexachlorocyclohexane) – Used as an insecticide in the timber industry in the 1960s/70s and is now thought to be a carcinogen. Toxicity builds up in fish over time.
- NPEs (Nonylphenol ethoxylates) – Chemical added to plastic and rubber as a stabilising agent. Toxic to sea life and birds and thought to interfere with hormones responsible for reproduction.