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Assessing the impact of banning the single-use plastic carrier bags: a case study for Kenyan marine environment looking at macro, meso, and microplastics

Environmental Monitoring and Assessment 2024 11 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Charles Mitto Kosore, Edward Waiyaki, Faith Kimanga

Summary

Researchers assessed the impact of Kenya's single-use plastic carrier bag ban on marine plastic pollution along the country's coastline. While the ban appeared to reduce the proportion of carrier bags in beach litter, packaging plastics remained the most common type of debris found. The study suggests that banning one category of plastic products alone is insufficient to address the broader problem of marine plastic pollution without tackling other major sources.

Poor waste management and unsustainable institutional and individual behaviors, have led to the accumulation of plastic litter in many habitats worldwide. Assessment of plastic pollution in Kenyan marine environment was conducted focusing on the impact of banning the single-use plastic carrier bags in Kenya. The quantification, composition, and distribution of plastics were determined at nine (9) beaches along Kenyan coastline using standing stock method. A total of 750 plastic items were collected and categorized with only 47 pieces being single-use plastic carrier bags. A great number of plastics (n = 383), were identified by their original use, with packaging plastics being the most common (n = 155). Macroplastics were the overall dominant plastics at 76%, mesoplastics, 21% and microplastics, 3%, which were altogether dominated by low-density polyethylene (LDPE) at (46%), followed by polypropylene (PP), 30%; polyethylene tetraphthalate (PET), 9%; polyvinyl chloride (PVC), 8%; and polystyrene (PS), 7%. The absence of identifiable single-use plastic carrier bags in 6 out of 9 beaches signified the effectiveness of the ban in Kenya. Monitoring of trends and sources of plastic debris is encouraged to help enhance the science-policy linkage aimed at reducing marine plastic pollution.

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