Waste streams refer to the various types of waste materials produced by different industries or activities, such as manufacturing, agriculture, and households. This research area focuses on understanding the composition, generation, and management of waste streams in order to develop sustainable solutions for reducing, reusing, and recycling waste materials. Researchers in this field may study the environmental impacts of waste streams, technologies for waste treatment and disposal, and policies for waste management and resource recovery. The goal of this research is to minimize the negative effects of waste on the environment and human health while promoting the efficient use of resources.