Generation of Heavy Metal Contaminants in the Mining Sector and Their Impact on the Environment

Mining activities are a major source of heavy metal contamination, releasing toxic elements into soil, water, and air through ore extraction, mineral processing, mine waste disposal, acid mine drainage, and atmospheric deposition. This review summarizes what is currently known about heavy metal contamination in the mining industry, including its production, distribution, ecological effects, human risks, monitoring methods, and remediation strategies. The reviews concentrated on major pollutants, such as lead (Pb), arsenic (As), cadmium (Cd), mercury (Hg), zinc (Zn), and copper (Cu), which are frequently found in environments affected by mining around the world. According to geoaccumulation and ecological risk assessments, mercury and cadmium often pose the greatest ecological risks, especially in Pb, Zn, and Cu mining regions. Ingestion has been identified as a major source of heavy metal pollution exposure, contributing to soil degradation, surface and groundwater contamination, bioaccumulation in plants and animals, and carcinogenic and noncarcinogenic health effects. The study also evaluated current monitoring approaches, including chemical analysis, remote sensing, geographical information systems (GIS), and environmental modeling, as well as emerging remediation technologies such as phytoremediation and nanotechnology-based methods. Overall, this study emphasized how crucial it is to combine cutting-edge monitoring systems with sustainable remediation techniques in order to enhance environmental management, lower risks to human health and the environment, and promote more ethical and sustainable mining practices.