Discovering Sustainable Biosorbents for Efficient Cadmium Remediation: An In-Depth Study on Eco-Friendly Strategies in Environmental Cleanup

The growing impact of rapid industrialization and urbanization on natural resources has led to pervasive pollution, particularly in soil, air, and water. Among the toxic pollutants, cadmium, a toxic heavy metal, poses an important threat to both the environment and human health. Anthropogenic activities, such as fuel combustion and industrial wastes, release cadmium into the atmosphere, eventually finding its way into the food chain. The consequences of cadmium consumption include oxidative damage to internal organs and a potential link to cancer. Conventional methods often fall short in addressing such contaminants, necessitating the continuous development of effective solutions. Biosorption, a straightforward yet powerful method, emerges as a promising avenue for tackling cadmium pollution. This technique involves the removal of pollutants using biological materials, encompassing various biosorbents, and removal mechanisms such as precipitation, ion exchange, complexation, adsorption, and transport of molecules across cell membranes. The technology leverages living sorbents like plants, bacteria, algae, and fungi as well as nonliving materials such as activated carbon, providing flexibility in sorbent selection based on specific target molecules or heavy metals. This chapter delves into the pivotal role of biosorption in cadmium remediation, elucidating current research trends, and offering insights into future perspectives of this technology in environmental remediation.