Arsenic sequestration refers to the process of capturing, immobilizing or removing arsenic from water, soil, or other environmental media to prevent its release or mitigate its harmful effects on human health and the environment. This research area involves developing various technologies and methods for effectively reducing arsenic concentrations in contaminated environments, such as through chemical precipitation, adsorption onto solid materials, or biological transformation. Arsenic sequestration is of particular importance in regions where naturally occurring arsenic contamination is a significant issue, such as in certain parts of Southeast Asia and South America.