The study of chemical reactions that occur in water, air, land, and biological environments, as well as the consequences of human activities on them, is known as environmental chemistry. Astrochemistry, atmospheric chemistry, environmental modelling, geochemistry, marine chemistry, and pollution remediation are among the topics covered. It's not to be confused with green chemistry, which aims to eliminate pollution at the source. Environmental Chemistry begins with an understanding of how the uncontaminated environment operates, as well as which chemicals exist naturally in what concentrations and with what consequences. Without this, evaluating the consequences of human chemical emissions on the environment would be difficult.
Pollution control is a term used in environmental engineering to describe a variety of methods for limiting environmental damage caused by the discharge of toxic chemicals and energies. Pollution control does not imply abandoning existing productive human activities, but rather rearranging them so that their detrimental effects do not outweigh their benefits.