STRATEGIES FOR EFFECTIVE CADMIUM REMOVAL: A COMPREHENSIVE REVIEW
Deepthi P V
Department of Chemistry, Nehru Arts and Science College, Kanhangad,
Kannur University, Kerala-671314, India
Abstract: Cadmium contamination in wastewater, primarily from industrial activities, poses severe health hazards, underscoring the need for efficient treatment methods. This review evaluates several cadmium removal techniques, including precipitation, coagulation, flotation, membrane filtration, biosorption, and carbon-based nano sorbents, all showing substantial removal effectiveness and potential for reusability, though each has specific limitations. Emphasis is placed on adsorptive methods, with materials like activated carbon and low-cost biosorbents demonstrating high cadmium sorption capacities. Additionally, the regeneration of sorbents and safe disposal of cadmium-laden waste are discussed as essential components of sustainable remediation efforts. Together, these treatment strategies represent a comprehensive approach to mitigating cadmium pollution in wastewater, highlighting opportunities for advancing cleaner and more efficient water treatment solutions.
Keywords: Cadmium, precipitation, adsorption, coagulation, flotation, membrane filtration