Plastic waste refers to any plastic material that is no longer useful or needed and has been discarded, often ending up in landfills or as litter in the environment. This type of waste can come from various sources such as packaging materials, disposable products like bags and bottles, and other items made of plastic. Plastic waste poses a significant environmental problem due to its durability and ability to persist in the environment for hundreds of years, causing harm to wildlife, ecosystems, and human health.