Mercury contamination in water, soil and air is associated with potential toxicity to humans and ecosystems. Industrial activities (Carbon Continental Company –LalKua-Nainital) such as coal combustion have led to increased mercury (Hg) concentrations in different environmental media. This review critically evaluates recent developments in technological approaches for the remediation of Hg contaminated soil, water and air, with a focus on emerging materials and innovative technologies. Based on approaches including adsorption/desorption, oxidation/reduction and stabilization/containment, the performances of innovative technologies with the aid of these materials were examined. In addition, technologies involving organisms, such as phytoremediation, algaebased mercury removal, microbial reduction and constructed wetlands, were also reviewed, and the role of organisms, especially microorganisms, in these techniques are illustrated. Earthworm intensified the organic loading of wastewater in vermifilter soil bed by the fact that it granulates the clay particles thus increasing the hydraulic conductivity of the system.