Removal of Cd(II) from aqueous streams is of special concern because of its very high toxicity and persistent nature. The
sorbents based on natural and waste materials have very promising performances in the treatment of Cd(II) contaminated waters.
Very few reviews are available that provide valuable information on the various aspects of the utilization of natural and waste
materials for Cd(II) metal ions removal. In this context, this review examines a wide range of materials as green sorbents for the
adsorptive removal of Cd(II) from aqueous media and discusses the equilibrium and kinetics of cadmium sorption. From the
literature survey, different green sorbents were compared in terms of Cd(II) sorption capacity. Green sorbents being highly
efficient, low–cost and versatile can be exploited for Cd(II) bioremediation. This work can be taken as an example of good
practice for representative unconventional materials used in Cd(II) removal. The technique needs further development before
being applied in daily practice.